42-683 Electric Switch Mechanisms

Electric Switch
Mechanisms
Installation and Operating Manual
Series
B, C, D, F,
O, Q, S, U, W,
and X
with
Aluminum,
Carbon Steel,
or
Cast Iron
Housings
Read this Manual Before Installing
This manual provides information on Electric Switch
Mechanisms. It is important that all instructions are read
carefully and followed in sequence. Detailed instructions
are included in the Installation section of this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
NOTES
Notes contain information that augments or clarifies
an operating step. Notes do not normally contain
actions. They follow the procedural steps to which
they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific
materials. In this manual, a caution indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
WARNINGS
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
WARNING! Explosion hazard. Do not connect or
disconnect equipment unless power has been switched off
or the area is known to be non-hazardous.
Low Voltage Directive
For use in Installation Category II, Pollution Degree 2. If
equipment is used in a manner not specified by manufacturer, protection provided by equipment may be
impaired.
Notice of Copyright and Limitations
Magnetrol & Magnetrol logotype are registered trademarks of Magnetrol International. Copyright © 2015
Magnetrol International. All rights reserved.
Performance specifications are effective with date of issue
and are subject to change without notice.
Magnetrol reserves the right to make changes to the
products described in this manual at any time without
notice. Magnetrol makes no warranty with respect to the
accuracy of the information in this manual.
Warranty
All Magnetrol mechanical level and flow controls are warranted free of defects in materials or workmanship for five
full years from the date of original factory shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is
determined to be covered under the warranty; then,
Magnetrol will repair or replace the control at no cost to
the purchaser (or owner) other than transportation.
Magnetrol shall not be liable for misapplication, labor
claims, direct or consequential damage or expense arising
from the installation or use of equipment. There are no
other warranties expressed or implied, except special
written warranties covering some Magnetrol products.
Quality Assurance
The quality assurance system in place at Magnetrol
guarantees the highest level of quality throughout the
company. Magnetrol is committed to providing full
customer satisfaction both in quality products and
quality service.
The Magnetrol quality assurance
system is registered to ISO 9001
affirming its commitment to known
international quality standards
providing the strongest assurance of
product/service quality available.
Electric Switch Mechanisms
Table of Contents
1.0 Reference Information.....................................................4
1.1 Principle of Operation ..............................................4
1.2 Operating Cycle ........................................................4
1.3 Description ...............................................................5
1.3.1 Dry contact switches B, C, D, O, Q, S and U ...5
1.3.2 Hermetically sealed switches F, W and X........5
2.0 Installation.......................................................................6
2.1 Replacing Switch Mechanism....................................6
2.2 Replacing Dry Contact Switches ...............................7
2.2.1 Series B, C, D, F, O, Q, S, U, W and X.........7
2.3 Vibration Service Adjustment ...................................8
3.0 Wiring .............................................................................9
3.1 SPDT Terminal Connections ....................................9
3.1.1 Single float with one switch or
single stage displacer.......................................9
3.1.2 Single float with two switches or
dual stage displacer.........................................9
3.1.3 Single float with three switches or
three stage displacer......................................10
3.2 DPDT Terminal Connections.................................11
3.2.1 Single float with one switch or
single stage displacer.....................................11
3.2.2 Single float with two switches or
dual stage displacer.......................................11
3.2.3 Three stage displacer ....................................12
4.0 Preventative Maintenance..............................................13
4.1 Inspect Switch Mechanisms ....................................13
5.0 Switch Specifications .....................................................14
6.0 Replacement Switch Mechanisms.................................15
6.0.1 Magnet strength ...........................................15
6.1 Yellow Dot Magnet Replacement Mechanisms........15
6.1.1 Series B, C, D, F, O, Q, S, U, W and X.......15
6.2 Red Dot Magnet Replacement Mechanisms............16
6.2.1 Series B, C, F, U, W and X ..........................16
7.0 Switch Housing Replacement Assemblies .....................17
7.0.1 Aluminum housings .....................................17
7.0.2 Cast iron housings........................................18
7.0.3 Carbon steel housings...................................18
7.1 Replacement Housing Kits......................................19
7.1.1 Referred by eighth, ninth and tenth digit .....19
7.1.2 Referred by description ................................19
7.1.3 ATEX ...........................................................19
7.2 Replacement Gaskets and Hardware .......................20
8.0 Manual Reset Option ....................................................20
8.1 Parts Breakdown and Identification.........................20
8.2 Field Installation Instructions..................................21
9.0 Switch and Housing Model Codes................................22
9.1 Type 4, 4X, 7, 9 and Group B Enclosure Codes .....22
9.2 ATEX Enclosure Codes...........................................31
1.0
Reference Information
1.1
Principle of Operation
Figures 1 & 2 illustrate the simple, reliable operating principle of a float level switch. Switching action is obtained
through the use of a magnetic sleeve (4) and a float (3),
displacer or flow sensing element and a switching mechanism (2). These two basic component assemblies are separated by a non-magnetic, pressure tight enclosing tube (5).
The switch (2) and magnet (1) are assembled to a mechanism with a swinging arm which operates on precision
stainless steel pivots.
1.2
2
Pivot
5
4
Return
Spring
1
3
Process
Liquid
Process
Liquid
Rising Level
Falling Level
Figure 1
Figure 2
Rising Level
Falling Level
Operating Cycle
As level of a liquid in a vessel rises (Figure 1), the float
rides on the liquid surface moving the magnetic sleeve
upward in the enclosing tube and into the field of the
switch mechanism magnet. As a result, the magnet is
drawn in tightly to the enclosing tube moving the switch
adjusting screw and allowing the activating arm of the
snap switch to move, making or breaking the electrical
circuit. As the liquid level recedes (Figure 2), the float and
magnetic sleeve moves downward until the switch magnet
releases and is drawn outward, away from the enclosing
tube by a tension spring. This in turn allows the activating arm of the snap switch to move, thus reversing
switch action.
Switch mechanisms may include a single switch or multiple switches, depending on operational requirements and
switching action desired.
4
42-683 Electric Switch Mechanisms
1.3
Description
Magnetrol level controls are available with a range of different switch mechanisms—each designed for specific service conditions. A brief description of the individual switch
mechanisms and their applications are given below.
1.3.1 Dry Contact Switches B, C, D, O, Q, S and U
Figure 3
Series B, C, D, O and Q Dry
Contact Switches
Figure 4
Series S
Snap Switch
Figure 5
Series F
Hermetically Sealed Switch
• Series B switches are general purpose with a maximum
liquid temperature rating of +250° F (+121° C), see
Figure 3.
• Series C switches are general purpose with a maximum
liquid temperature rating of +450° F (+232° C), see
Figure 3.
• Series D switches are designed for DC current applications with a maximum liquid temperature rating of
+250° F (+121° C), see Figure 3.
• Series O switches are general purpose with a maximum
liquid temperature rating of +300° F (+149° C), used only
in model C10 and C15 units, see Figure 3.
• Series Q switches are general purpose with a maximum
liquid temperature rating of +250° F (+121° C), used only
in model C10 and C15 units, see Figure 3.
• Series S switches are general purpose with a maximum liquid temperature rating of +550° F (+288° C), or designed
for DC current applications with a maximum liquid temperature of +250° F (+121° C), used only in model B40
units, see Figure 4.
• Series U switches have gold alloy contacts and are suitable
for applications with a maximum liquid temperature of
+250° F (+121° C).
1.3.2 Hermetically Sealed Switches F, W and X
Hermetically sealed switches are for use in special applications where hermetically sealed contacts are required.
• Series F switches are well suited for use in process temperatures up to +750° F (+399° C), see Figure 5.
• Series W switches are suitable for applications with a
maximum liquid temperature of +450° F (+232° C).
• Series X switches have gold-plated contacts and are suitable
for applications with a maximum liquid temperature of
+450° F (+232° C).
NOTE: See bulletin 42-694 for series HS & H1 hermetically
sealed switches.
42-683 Electric Switch Mechanisms
5
2.0
Installation
2.1
Replacing Switch Mechanism
Caution: Before attempting to remove a switch mechanism, be certain to pull disconnect switch or otherwise assure that
electrical circuit through control is de-energized.
Figure 6
Mounting Screw
1. Disconnect wiring from supply side of terminal block
on switch mechanism. Note and record lead wire
terminal locations.
2. Loosen screw in split mounting clamp until mechanism
slides freely on enclosing tube, refer to Figure 6.
3. Remove small round head screw securing lower switch
mechanism to baffle plate, refer to Figure 7.
4. Slide switch mechanism off of enclosing tube. If mechanism
is to be reused, ensure that it is placed on a clean surface,
free of metallic particles that may be attracted to the
switch magnet.
Caution: Always handle the switch mechanisms about or around
the terminal block. Replacement switch mechanisms are
precision instruments which have been factory-calibrated
to operate with the level control specified. Extreme care
should be taken: 1) when handling the switch mechanism;
2) to assure that the magnet does not come in contact
with any magnetic materials; and, 3) that the switch mechanism is always placed on a clean, non-magnetic surface
free of metal particles which may be attracted to the
switch mechanism magnet. DO NOT attempt to make any
adjustments to switch mechanisms.
Baffle Plate Screw
Figure 7
Baffle Plate Screw
6
5. Loosen mounting screw so that switch frame will fit over
e-tube. Install switch mechanism by sliding it over the
enclosing tube. Slide mechanism down until the bottom of
the frame and terminal block are resting on the baffle
plate. The baffle plate should be resting on the hub of the
housing base.
6. Install and tighten baffle plate screw so that the switch
mechanism may not be separated from the baffle plate.
Tighten the mechanism mounting screw so that the mechanism is firmly clamped to the enclosing tube.
7. Swing magnet assembly in and out by hand, checking
carefully for any signs of binding.
8. Reattached supply-side wiring to the terminal block and
check switch function by varying liquid level in the vessel.
42-683 Electric Switch Mechanisms
2.2
Replacing Dry Contact Switches
2.2.1 Series B, C, D, F, O, Q, S, U, W and X
1. Disconnect control from power supply.
2. Disconnect switch leads from terminal block. Note and
record terminal connections of switch to be replaced.
3. Remove two mounting screws holding existing switch,
refer to Figure 8.
4. Remove existing switch and install replacement switch in
the same position, tightening mounting screws securely.
Adjusting
Screw
Mounting
Screws
Figure 8
Dry Contact Switch Mechanism
NOTE: For proper operation of the replacement switch, it must actuate in the middle portion of the pivoted magnet’s swing.
5. Check switch action and adjust as follows:
a. Slowly rotate the pivoted magnet by hand, back and
forth through its angle of swing, listening closely for the
actuating click of the switch in each direction.
b. Check to see if there is equal overtravel of magnet in its
swing after the switch click in either direction.
c. If switch actuation is not correct, change adjustment of
actuating screw using a 1⁄16" hexagon key wrench, refer to
Figure 8.
NOTE: If a single switch is being replaced on a DPDT mechanism,
lever of second switch must be depressed and held to allow
for the audible adjustment of new switch, as described above.
d. With new switch in adjustment, release lever of second
switch and perform fine-tuning of both switches to
provide simultaneous actuation (clicks).
6. Reconnect power supply and test switch action by varying liquid level in the vessel or by “gently blowing down”
float chamber.
42-683 Electric Switch Mechanisms
7
2.3
Vessel
Baffle plate
Frame mounting screw
Incorrect
Vibration Service Adjustment
Level controls are frequently used in applications where
vibration is encountered, such as on scrubbers or compressors. Switch mechanisms may require repositioning to
prevent unwanted magnet movement. This position is
usually best at right angles to the direction of vibration.
The direction of vibration may be determined by the
arrangement of connections to the vessel or the vessels
mounting method. Accordingly, the vibration will tend to
be in one direction only.
Upon determining the vibration direction, switch mechanism(s) may be rotated from an incorrect position (as
shown in Figure 9, illustration is shown as looking at a
control from above), to a correct position as follows:
Caution: Before attempting to remove a switch mechanism, be certain to pull disconnect switch or otherwise assure that
electrical circuit through control is de-energized.
Direction of
vibration
1. Disconnect control from power supply.
2. Loosen screw in split mounting clamp until mechanism
turns freely on enclosing tube, refer to Figure 6 on page 6.
3. Rotate entire mechanism and bottom baffle plate together
to the correct position.
Baffle plate
Caution: Be certain power supply wires retain some slack at new
position. Do not pull wires taut.
Correct
Swing of magnet
Direction of vibration
Figure 9
Rotation of Switch
Mechanism in Vibration
8
NOTE: Amount of rotation required will vary with each installation and
may not be as much as shown in illustration.
4. Check action of switch magnet at new position. When
magnet vibrates from side to side, instead of front to back,
correct position has been attained.
5. Tighten clamp screw on switch mechanism.
6. Reconnect power supply, and test switch action under
operating conditions.
42-683 Electric Switch Mechanisms
3.0
Wiring
Circuits shown are for direct-acting level switches and are
reversed in side mounting float-in-tank models, which
utilize a reversing float pivot.
NOTE: See bulletin 42-694 for wiring diagrams for “HS” Series
hermetically sealed switches.
3.1
SPDT Terminal Connections
3.1.1 Single float with one switch or single stage displacer
1. Rising level closes contacts 5 & 6, see Figure 10.
2. Falling level closes contacts 4 & 5.
3. Wiring Diagram is reversed (high level actuation becomes
low level actuation, etc.) when this switch mechanism is
used on side mounted float switches employing a reversing
pivot (Models B40, T52, T62, T63, etc.).
3.1.2 Single float with two switches or dual stage displacer
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 11.
2. Falling level closes contacts 4 & 5 and 1 & 2.
3. Wiring diagram is reversed (high level actuation becomes
low level actuation, etc.) when this switch mechanism is
used on side mounted float switches employing a reversing
pivot (Models B40, T52, T62, T63, etc.).
4. On units with tandem floats, the top float operates the
bottom mechanism while the bottom float actuates the
top mechanism.
Assem.
A
Upper stage operates
upper switch mechanism
Load
Load
Load
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
4
5
Internal
Circuit
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
Load
1
Internal
Circuit
2
3
6
Assem.
B
Lower stage operates
lower switch mechanism
Figure 10
Single Float with One Switch
or Single Stage Displacer
Load
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
Load
4
Internal
Circuit
5
6
Figure 11
Single Float with Two Switches
or Dual Stage Displacer
42-683 Electric Switch Mechanisms
9
3.1.3 Single float with three switches or
three stage displacer:
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 12.
2. Falling level closes contacts 4 & 5 and 1 & 2.
3. Unit is shipped with switches positioned for proper
function. Do not change switch spacing.
Assem.
B
Upper stage operates
upper switch mechanism
Load
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
Load
4
5
6
Assem.
A
Middle stage operates
middle switch mechanism
Load
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
Load
1
Close on Low Level (NC)
Common (C)
Close on High Level (NO)
Load
Internal
Circuit
2
3
Assem.
B
Lower stage operates
lower switch mechanism
Load
Internal
Circuit
4
Internal
Circuit
5
6
Figure 12
Single Float with Three Switches
or Three Stage Displacer
10
42-683 Electric Switch Mechanisms
3.2
DPDT Terminal Connections
3.2.1 Single float with one switch or single stage displacer
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure13.
2. Falling level closes contacts 4 & 5 and 1 & 2.
3. Double pole action is obtained by simultaneous operation
of the right and left side single pole double throw switches.
4. Wiring diagram is reversed (close on high becomes close
on low, etc.) when this switch mechanism is used on side
mounted float switches employing a reversing pivot.
(Models B40, T52, T62, T63, etc.)
3.2.2 Single float with two switches or dual stage displacer
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 14.
2. Falling level closes contacts 4 & 5 and 1 & 2.
3. Double pole action is obtained by simultaneous operation
of the right and left side single pole switches.
4. Wiring diagram is reversed (close on high becomes close
on low, etc.) when this switch mechanism is used on side
mounted float switches employing a reversing pivot.
(Models B40, T52, T62, T63, etc.)
5. On units with tandem floats, the top float operates the
bottom mechanism while the bottom float actuates the
top mechanism.
Lower stage operates lower switch mechanism
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Close on high level (NO)
Internal Circuit
(Right Switch)
Close on high level (NO)
Common (C)
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Close on high level (NO)
Close on low level (NC)
Load
Load
Upper stage operates upper switch mechanism
Close on high level (NO)
Common (C)
Common (C)
Close on low level (NC)
Internal Circuit
(Right Switch)
Load
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Internal Circuit
(Right Switch)
Common (C)
Close on low level (NC)
Close on low level (NC)
Load
Load
Figure 13
Single Float with One Switch
or Single Stage Displacer
Load
Close on high level (NO)
Close on high level (NO)
Common (C)
Common (C)
Close on low level (NC)
Close on low level (NC)
Load
Load
Figure 14
Load
Single Float with Two Switches or Dual Stage Displacer
42-683 Electric Switch Mechanisms
11
3.2.3 Three Stage Displacer
1. Rising level closes contacts 5 & 6 and 2 & 3, see Figure 15.
2. Falling level closes contacts 4 & 5 and 1 & 2.
3. Double pole action is obtained by simultaneous operation
of the right and left side single pole switches.
Upper stage operates
upper switch mechanism
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Close on high level (NO)
Internal Circuit
(Right Switch)
Close on high level (NO)
Common (C)
Load
Common (C)
Close on low level (NC)
Close on low level (NC)
Load
Load
Middle stage operates
middle switch mechanism
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Close on high level (NO)
Internal Circuit
(Right Switch)
Close on high level (NO)
Common (C)
Load
Common (C)
Close on low level (NC)
Close on low level (NC)
Load
Load
Lower stage operates
lower switch mechanism
Internal Circuit
(Left Switch)
Load
4
1
5
2
6
3
Close on high level (NO)
Internal Circuit
(Right Switch)
Close on high level (NO)
Common (C)
Load
Common (C)
Close on low level (NC)
Close on low level (NC)
Load
Load
Figure 15
Three Stage Displacer
12
42-683 Electric Switch Mechanisms
4.0
Preventative Maintenance
Inspect switch mechanisms, terminals and connections
regularly. Proof test interval to be determined by application
requirements (required reliablity, operating conditions,
site requirements, etc.).
4.1
Inspect Switch Mechanisms, Terminals
and Connections
1. Dry contact switches should be inspected for excessive
wear on actuating lever or misalignment of adjustment
screw at point of contact between screw and lever. Such
wear can cause false switch actuating levels.
2. DO NOT operate your control with defective or maladjusted switch mechanisms.
3. Level controls may sometimes be exposed to excessive
heat or moisture. Under such conditions, insulation on
electrical wiring may become brittle, eventually breaking
or peeling away. The resulting “bare” wires can cause
short circuits.
NOTE: Check wiring carefully and replace at the first sign of brittle
insulation.
4. Vibration may sometimes cause terminal screws to loosen.
Check all terminal connections to be certain that screws
are tight.
NOTE: Spare switches should be kept on hand at all times.
42-683 Electric Switch Mechanisms
13
5.0
Switch Specifications
RATING
SWITCH
SERIES
SWITCH
TYPE
PROCESS
TEMP. RANGE➀
° F (° C)
LOAD
B
Snap
-40 to +250
(-40 to +121)
C
Snap
-40 to +450
(-40 to +232)
D
Snap
-40 to +250
(-40 to +121)
F
(followed
by letter)
Hermetic
F
(followed
by number)
120
Volts AC
240
480
24
Volts DC
120
240
Non-Inductive Amp
Inductive Amp
Horsepower
15.00
15.00
1
⁄8
15.00
15.00
1
⁄4
15.00
15.00
—
6.00
5.00
—
0.50
0.05
—
0.25
0.03
—
Non-Inductive Amp
Inductive Amp
Horsepower
15.00
15.00
1
⁄10
15.00
15.00
1
⁄6
15.00
15.00
—
6.00
5.00
—
1.00
0.50
—
0.50
—
—
Non-Inductive Amp
10.00
—
—
10.00
10.00
Inductive Amp
Horsepower
3.80
1
⁄8
—
—
—
—
-50 to +750
(-46 to +399)
Resistive Amp
Inductive Amp
2.50
2.50
—
—
—
—
Hermetic
-50 to +250
(-46 to +121)
Resistive Amp
Inductive Amp
1.00
1.00
—
—
O
Snap
-40 to +450
(-40 to +232)
Non-Inductive Amp
Inductive Amp
Horsepower
15.00
15.00
1
⁄10
Q
Snap
-40 to +250
(-40 to +121)
Non-Inductive Amp
Inductive Amp
Horsepower
SA
SD
SK
SN
Snap
-40 to +550
(-40 to +288)
SB
SE
SL
SO
Snap
-40 to +250
(-40 to +121)
(X) B
(x=gold
contacts)
Snap
Gold
Contacts
(X) F
(x=gold
contacts)
2.20
1
⁄8
1.50 min.
3.00 max.
—
—
4.00 ¡
2.00 ¡
0.30
0.10
—
—
—
—
15.00 ¡
10.00 ¡
—
—
—
—
15.00
15.00
1
⁄6
15.00
15.00
—
—
—
—
1.00
—
—
0.50
—
—
15.00
15.00
1
⁄8
15.00
15.00
1
⁄4
15.00
15.00
—
6.00
5.00
—
0.50
0.05
—
0.25
0.30
—
Non-Inductive Amp
Inductive Amp
Horsepower
15.00
15.00
1
⁄10
15.00
15.00
1
⁄6
15.00
15.00
—
—
—
—
1.00
0.50
—
0.50
—
—
Non-Inductive Amp
10.00
—
—
10.00
Inductive Amp
Horsepower
3.80
1
⁄8
—
—
—
—
—
—
2.20
1
⁄8
1.50 min.
3.00 max.
—
—
-40 to +250
(-40 to +121)
Non-inductive
Inductive
1.00
1.00
—
—
—
—
—
—
—
—
—
—
Hermetic
Snap Gold
Contacts
-50 to +750
(-46 to +399)
Non-inductive
Inductive
—
—
—
—
—
—
1.00
0.25
—
—
—
—
(X) HS
(x=gold
contacts)
Hermetic
Snap Gold
Contacts
Non-inductive
-50 to +550
(-46 to +288) ¬ Inductive
1.00
—
—
—
—
—
2.00
1.00
—
—
—
—
U
Snap Gold
Contacts
-40 to +250
(-40 to +121)
Non-inductive Amp
Inductive Amp
Horsepower
1.00
—
—
—
—
—
—
—
—
—
—
—
1.00
1.00
—
—
—
—
W
Hermetic
Snap
-50 to +450
(-46 to +232)
Non-inductive Amp
Inductive Amp
Horsepower
1.00
—
—
1.00
0.80
—
—
—
—
3.00 ¡
—
—
0.50
—
—
—
—
—
X
Hermetic
Snap Gold
Contacts
-50 to +450
(-46 to +232)
Non-inductive Amp
Inductive Amp
Horsepower
0.50
0.15
—
0.50
—
—
—
—
—
0.50
—
—
0.50
—
—
0.50
—
—
—
—
10.00
➀ Process temperatures based on +100° F (+38° C) ambient temperature.
¡ 28 VDC
¬ On steam applications, temperature down-rated to +400° F (+204° C) at +100° F (+38° C) ambient.
14
42-683 Electric Switch Mechanisms
6.0
Replacement Switch Mechanisms
6.0.1 Magnet strength
Switch mechanisms are provided with different strength magnets as determined by the characteristics of the level switch. A
red, red/yellow or yellow dot is visible on each magnet. When
ordering replacement switch mechanisms, be certain to determine the color dot on the magnet. For these types of switches, the tenth digit of the model number identifies the magnet
used on the control. The correct magnet dot color may be
chosen by finding the tenth digit of your model number at
the top of the chart. Any model numbers preceded with an
“X” are specially modified controls. Contact the factory for
replacement part numbers.
6.1
Yellow Dot Magnet Replacement Mechanisms
6.1.1 Series B, C, D, F, O, Q, S, U, W & X – Yellow
10th Digit
Switch
Series
Contacts
SPDT
B
DPDT
SPDT
C
DPDT
SPDT
D
DPDT
SPDT
F
DPDT
O
Q
S
S (DC volt)
Quantity
8th & 9th
Digit
1
BA, BK
2
BB, BL
3
BC, BM
1
BD, BN
2
BE, BO
1
CA, CK
2
CB, CL
3
CC, CM
1
CD, CN
2
CE, CO
1
DA, DK
2
DB, DL
3
DC, DM
1
DD, DN
2
DE, DO
1
FA, FK
2
FB, FL
1
FD, FN
E, F, Y, M, W, Q, B, S, K
Bottom Mech
Middle Mech
Top Mech
N/A
089-7401-104
089-7401-122
N/A
089-7401-103
089-7401-104
089-7401-125
N/A
089-7401-122
N/A
089-7401-109
089-7401-110
N/A
N/A
089-7401-105
089-7401-123
N/A
089-7401-095
N/A
089-7401-098
N/A
089-7401-106
N/A
N/A
089-7401-096
N/A
2
FE, FO
3
OC, OM
089-7401-110
089-7401-109
089-7401-110
DPDT
3
OE, OK
089-7401-125
089-7401-125
089-7401-125
SPDT
3
QC, QM
089-7401-104
089-7401-103
089-7401-104
DPDT
3
QE, QK
089-7401-122
089-7401-122
089-7401-122
SPDT
1
SA, SK
089-7401-126
1
SD, SN
089-7401-128
SPDT
1
SB, SL
089-7401-129
DPDT
1
SE, SO
089-7401-127
089-7101-024
089-7401-123
SPDT
DPDT
089-7101-022
089-7401-125
N/A
089-7401-106
089-7101-020
N/A
N/A
089-7401-110
Switch
Only
089-7101-041
089-7401-098
089-7101-022
089-7101-020
N/A
089-7101-022
N/A
089-7101-024
Continued on next page.
42-683 Electric Switch Mechanisms
15
6.1.1 Series B, C, D, F, O, Q, S, U, W & X – Yellow (cont.)
10th Digit
Switch
Series
Contacts
SPDT
U
SPDT
Bottom Mech
Middle Mech
Top Mech
1
UA, UK, UU
047-5534-001
N/A
N/A
2
UB, UL, UV
047-5534-001
047-5535-001
N/A
3
UC, UM, UW
047-5534-001
047-5535-001
047-5534-001
1
UD, UN, UX
047-6520-001
N/A
N/A
2
UE, UO, UY
047-6520-001
047-6520-001
N/A
1
WA, WK, WU
089-7410-004
N/A
N/A
2
WB, WL, WV
089-7410-004
089-7410-003
N/A
3
WC, WM, WW
089-7410-004
089-7410-003
089-7410-004
1
WD, WN, WX
089-7410-005
N/A
N/A
2
WE, WO, WY
089-7410-005
089-7410-005
N/A
1
XA, XK, XU
089-7412-004
N/A
N/A
2
XB, XL, XV
089-7412-004
089-7412-003
N/A
3
XC, XM, XW
089-7412-004
089-7412-003
089-7412-004
1
XD, XN, XX
089-7412-005
N/A
N/A
2
XE, XO, XY, X4
089-7412-005
089-7412-005
N/A
DPDT
SPDT
X
DPDT
6.2
Switch Only
Quantity
DPDT
W
E, F, Y, M, W, Q, B, S, K
8th & 9th
Digits
037-4630-001
037-9101-001
037-9102-001
Red Dot Magnet Replacement Mechanisms
6.2.1 Series B, C, F, U, W & X – Red, Red/Yellow
10th Digit
Switch
Series
Contacts
SPDT
B
Quantity
8th & 9th
Digits
1
BA, BK
2
BB, BL
3
BC, BM
1
BD, BN
DPDT
SPDT
C
2
BE, BO
1
CA, CK
2
CB, CL
3
CC, CM
1
CD, CN
DPDT
SPDT
F
2
CE, CO
1
FA, FK
2
1
DPDT
SPDT
U
FB, FL
FD, FN
G, H, R, D, V, P, A, T, J
Bottom Mech
Middle Mech
Switch Only
Top Mech
N/A
N/A
089-7401-102
089-7401-101
089-7401-102
N/A
089-7401-121
N/A
089-7401-121
N/A
N/A
089-7401-108
089-7401-107
089-7401-108
089-7101-022
N/A
089-7401-124
N/A
089-7401-124
N/A
089-7401-093
089-7401-094
N/A
N/A
089-7101-041
089-7401-097
2
FE, FO
1
UA, UK, UU
047-5533-001
N/A
N/A
2
UB, UL, UV
047-5533-001
047-5536-001
N/A
3
UC, UM, UW
047-5533-001
047-5536-001
047-5533-001
1
UD, UN, UX
047-6519-001
N/A
N/A
2
UE, UO, UY
047-6519-001
047-6519-001
N/A
DPDT
089-7101-020
089-7401-097
037-4630-001
Continued on next page.
16
42-683 Electric Switch Mechanisms
6.2.1 Series B, C, F, U, W & X – Red, Red/Yellow (cont.)
10th Digit
Switch
Series
Contacts
SPDT
W
X
Switch Only
Quantity
Bottom Mech
Middle Mech
Top Mech
1
WA, WK, WU
089-7410-002
N/A
N/A
2
WB, WL, WV
089-7410-002
089-7410-001
N/A
3
WC, WM, WW
089-7410-002
089-7410-001
089-7410-002
1
N/A
2
N/A
1
XA, XK, XU
089-7412-002
N/A
N/A
2
XB, XL, XV
089-7412-002
089-7412-001
N/A
3
XC, XM, XW
089-7412-002
089-7412-001
089-7412-002
1
N/A
2
N/A
DPDT
SPDT
G, H, R, D, V, P, A, T, J
8th & 9th
Digits
DPDT
7.0
N/A
089-7413-001
N/A
Switch Housing Replacement
Assemblies
When ordering replacement parts for an existing
Magnetrol instrument, please specify:
1. Model and serial numbers of control.
2. Description and part number of replacement kit.
Enclosing Tube Assembly
Switch Assembly
Housing Cover
Patent Label
Lockwasher
Ground Screw
089-7411-001
Baffle Plate
Gasket
Pipe Plug
The proper replacement switch housing kit and parts can
be determined by the last three characters of the model
number. In section 6.1.1 on page 18, locate the eighth and
ninth digits of your model number at the left side of the
chart. Follow the appropriate row across the page while
locating the tenth digit of your model number at the top
of the chart. In section 6.1.2 on page 18, the chart lists the
replacement housing kits according to description.
7.0.1 Aluminum Housings
Housing Base
O-ring
Breather Drain
(optional)
Set Screw
Set Screw
Enclosing Tube Assembly
Figure 16
Aluminum Housing Assembly
Die cast aluminum TYPE 4X housing replacements are
available for general purpose or weatherproof installations.
Explosion proof TYPE 4X/7/9 and Class I, Div 1,
Group B housing replacements are available for hazardous
atmosphere locations. Die cast aluminum housings are finished with a baked-on polyester powder coat paint.
NOTE: Consult your local representative on applications to meet
other codes or approvals not covered in this bulletin.
42-683 Electric Switch Mechanisms
17
7.0.2 Cast Iron Housings
Cast Iron TYPE 7/9 housing replacements are available for
hazardous atmosphere locations. Both Class I, Div. 1,
Groups C & D and Group B versions are available. The
grey iron cover and base are finished with a baked-on polyester powder coat paint.
NOTE: Consult your local representative on applications to meet
NEMA and other codes not covered in this bulletin.
Figure 17
Cast Iron Housing Assembly
7.0.3 Carbon Steel Housings
Carbon steel TYPE 4X switch housings are available for
general purpose and weatherproof installations. The housing base is cast from aluminum while the cover is made
from cold rolled steel. The housings are finished with a
baked-on polyester powder coat paint.
NOTE: Consult your local representative on applications to meet
other codes or approvals not covered in this bulletin.
Figure 18
Carbon Steel Housing Assembly
18
42-683 Electric Switch Mechanisms
Replacement Housing Kits ➀
7.1
7.1.1 Referenced by eighth, ninth and tenth digit
Eighth Digit
A, B, C, D, E
B, C, D,
F, G, H, I, S
E, G, Y, R
P, Q
S, T
089-6509-003¡ 089-6582-023
F, H, D, M
N/A
A, B
J, K, G
V, W
N/A
N/A
089-6510-003¡ 089-6582-024
K, L, M, N, O 089-6582-002 089-6582-023 089-6582-032 089-6582-005 089-6582-024 089-6582-033 089-6582-008
U, V, W, X, Y
O, Q
Tenth Digit
Ninth Digit
089-6582-003 089-6582-028
089-6582-006 089-6582-029
A, B, C, D, E
N/A
N/A
089-6528-003 089-6582-025
N/A
N/A
TYPE 4X/7/9
with drain
TYPE 7/9
with drain
N/A
K, L, M, N, O
089-6578-001 089-6582-025
➀ Housing kits include o-rings and hardware. Baffle plate not included.
¡ Cover kit only. Housing base must be ordered separately by P/N 089-6505-003.
7.1.2 Referenced by description
Cover
Height
Housing Material
TYPE 1
TYPE 4X
TYPE 4X/7/9
CS cover, aluminum base 089-6511-003¡ 089-6509-003¡
TYPE 7/9
Group B
N/A
N/A
N/A
Short
Cast aluminum
089-6582-023 089-6582-023
N/A
089-6582-032 089-6582-028
N/A
Cast Iron
N/A
CS cover, aluminum base 089-6512-003¡ 089-6510-003¡
089-6582-002
N/A
N/A
089-6582-003
N/A
N/A
Tall
Cast aluminum
089-6582-024 089-6582-024
N/A
089-6582-033 089-6582-029
N/A
Cast Iron
N/A
CS cover, aluminum base
089-6528-003
089-6582-005 089-6582-008
N/A
089-6582-006
N/A
N/A
N/A
N/A
X-Tall
Cast aluminum
N/A
089-6582-025 089-6582-025
Cast Iron
Lexan Cover Kit
N/A
N/A
089-6578-001
089-6522-001¡
7.1.3 ATEX Housing Replacements
Short
Housing
Material
Cast Alum
Tall
Part Description
XP
IS
XP
IS
Cover
089-6582-035
089-6582-036
089-6582-037
089-6582-038
Base w/ 1" NPT conduit entry
089-6582-041
089-6582-043
089-6582-041
089-6582-043
Base w/ M20 ¥ 1.5 conduit entry
089-6582-040
089-6582-042
089-6582-040
089-6582-042
Cover
Cast Iron
Base w/ 3⁄4" NPT conduit entry
C/F
Base w/ M20 ¥ 1.5 conduit entry
42-683 Electric Switch Mechanisms
19
7.2
Replacement Gaskets and Hardware
Housing Material
Enclosure
Type
9th Digit
10th Digit
CS cover, aluminum base
Type 4, 4X
A, B, C, D, E
D, E, F, H, R, Y, M, G
Type 7/9, 4X/7/9 K, L, M, N, O
Cast Iron
Cast Iron
3/4"
O-ring
Baffle
Plate ¬
Cover
Gasket
012-1318-001 036-5303-001 089-6508-001
D, R, Y, M
012-2201-249 036-5303-001
012-2201-222 005-6603-135
Group B
K, L, M, N, O
V, W
Type 4X
A, B, C, D, E
A, B, P, Q
Type 4X/7/9, 7/9 K, L, M, N, O
A, B, P, Q
Group B
K, L, M, N, O
J, K, S, T
ATEX XP
A, B, C, D, E, F, G
C, 9
ATEX IS
A, B, C, D, E
S, T
ATEX XP
U, V, W, Y, 7
5, 7
Cover
Hardware
012-2201-116
N/A
Cast Aluminum
Cast Iron
012-2201-253 005-6657-001
N/A
012-1301-005 036-5303-001
¬ For models with manual reset options, see page 23 for parts.
8.0
Manual Reset Option
8.1
Parts Breakdown and Identification
Part No. 089-6507-001, on Boiler Controls Equipped
with Manual Reset (*denotes included in kit)
Fastening screw (or nut)
Switch cover
Clamp screw
⁄4" Drilled hole
1
⁄8"
7
Switch assembly
Baffle plate assembly*
Round head screw*
(Baffle Plate to Switch
Mechanism)
Reset plunger*
Reset actuating assembly*
Nameplate and
serial number
Figure 19
20
42-683 Electric Switch Mechanisms
8.2
Field Installation Instructions
Caution: Before attempting work on any level control, be certain to
pull disconnect switch or otherwise assure that electrical
circuit through control is de-energized.
1. Remove switch cover by loosening fastening screw (or nut).
2. Drill a 1⁄4" diameter hole in cover at 7⁄8" up from bottom
edge, as shown.
3. Disconnect wiring from supply side of terminal strip on
switch mechanisms.
NOTE: Measure location of switch mechanism(s) on enclosing tube
and record for reference use during reassembly. (Measure
from top of enclosing tube to top of mounting clamp on switch
mechanism[s]).
4. Loosen screw in split mounting clamp of switch mechanism(s) until assembly moves freely on enclosing tube.
5. Remove small round head screw securing baffle plate to
switch mechanism.
6. Carefully lift off switch mechanism(s) and baffle plate.
Place on a clean surface, free of any metal particles that
may be attracted onto the magnet(s).
7. Install a new baffle plate assembly, with manual reset
mechanism, and carefully replace switch mechanism(s) in
reverse of steps 3 through 6 above.
8. Replace switch cover, lining up drilled hole with hole in
reset actuating mechanism. Do not tighten cover fastening
screw (or nut) at this point.
9. Thread reset plunger into actuating mechanism through
drilled hole in switch cover and thumb tighten securely.
Reposition switch cover as necessary to be certain it does
not bind reset plunger.
10. Tighten fastening screw (or nut) on switch cover and
check action of plunger to see that it moves freely.
11. Vary level in float chamber to test operation of manual
reset mechanism.
NOTE: Boiler level controls should not start firing equipment when
boiler water level has returned to normal (safe point) until reset
plunger has been manually depressed. If control starts firing
equipment, magnet stop arm on switch mechanism must be
bent out on switch frame 1⁄32" allowing magnet to swing further
from enclosing tube arm and into the field of the reset magnet.
Caution: If it is necessary to reposition manual reset plunger, entire
switch mechanism(s) must be loosened and rotated on
enclosing tube to desired position (refer to step 4). Do not
attempt to position plunger by twisting switch cover or
damage to switch mechanism(s) will result.
42-683 Electric Switch Mechanisms
21
9.0
Switch and Housing Model Codes
The following charts identify the switch and housing model codes used with the buoyancy products. The
eighth, ninth and tenth digit combinations may be used to identify the type and number of switches,
number of contacts, switch magnet strength as well as housing type, size and options. The switch and
housing codes in bold are currently valid and available in combination with various buoyancy products.
The unbolded codes are no longer valid and should be replaced by the appropriate valid code. Mercury
switches are no longer available. All mercury switch mechanisms should be replaced by dry contact
mechanisms with the appropriate process temperature rating. See switch specifications, page 13.
example model number:
B
9.1
Switch
Type
K
A
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
1
SPDT
Tall
2
3
Short
1
DPDT
Tall
2
Short w/
Drain
Tall w/
Drain
1
SPDT
2
3
Mercury
Short w/
Drain
Tall w/
Drain
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Type 4
Carbon
Steel
AAE
AAG
AAF
AAH
ABF
ABH
ACF
ACH
ADE
ADG
ADF
ADH
AEF
AEH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AFE
AFG
AFF
AFH
AGF
AGH
AHF
AHH
AIE
AIG
AIF
AIH
AJF
AJH
Type 4X
Carbon
Steel
AAY
AAR
AAM
AAD
ABM
ABD
ACM
ACD
ADY
ADR
ADM
ADD
AEM
AED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
AFY
AFR
AFM
AFD
AGM
AGD
AHM
AHD
AIY
AIR
AIM
AID
AJM
AJD
Type 7/9
Cast Iron
AKY
AKR
AKM
AKD
ALM
ALD
AMM
AMD
ANY
ANR
ANM
AND
AOM
AOD
AUY
AUR
AUM
AUD
AVM
AVD
AWM
AWD
AXY
AXR
AXM
AXD
AYM
AYD
APY
APR
APM
APD
AQM
AQD
ARM
ARD
ASY
ASR
ASM
ASD
ATM
ATD
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast Alum Cast Iron
M20 ¥ 1.5
1" NPT
Cast Alum
AAQ
A2Q
AKQ
—
AKS
AAP
A2P
AKP
—
AKT
AAB
A2B
AKB
AKW
AKK
AAA
A2A
AKA
AKV
AKJ
ABB
A4B
ALB
ALW
ALK
ABA
A4A
ALA
ALV
ALJ
ACB
A6B
AMB
AMW
AMK
ACA
A6A
AMA
AMV
AMJ
ADQ
A8Q
ANQ
—
ANS
ADP
A8P
ANP
—
ANT
ADB
A8B
ANB
ANW
ANK
ADA
A8A
ANA
ANV
ANJ
AEB
A1B
AOB
AOW
AOK
AEA
A1A
AOA
AOV
AOJ
—
—
AUQ
—
—
—
—
AUP
—
—
—
—
AUB
—
—
—
—
AUA
—
—
—
—
AVB
—
—
—
—
AVA
—
—
—
—
AWB
—
—
—
—
AWA
—
—
—
—
AXQ
—
—
—
—
AXP
—
—
—
—
AXB
—
—
—
—
AXA
—
—
—
—
AYB
—
—
—
—
AYA
—
—
AFQ
—
APQ
—
—
AFP
—
APP
—
—
AFB
—
APB
—
—
AFA
—
APA
—
—
AGB
—
AQB
—
—
AGA
—
AQA
—
—
AHB
—
ARB
—
—
AHA
—
ARA
—
—
AIQ
—
ASQ
—
—
AIP
—
ASP
—
—
AIB
—
ASB
—
—
AIA
—
ASA
—
—
AJB
—
ATB
—
—
AJA
—
ATA
—
—
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
22
42-683 Electric Switch Mechanisms
9.1
Switch
Type
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
1
SPDT
Tall
2
3
Short
1
DPDT
Tall
2
Short w/
Drain
Tall w/
Drain
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
Dry Contact
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Short
1
SPDT
Tall
2
3
Short
1
DPDT
Tall
2
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Type 4
Carbon
Steel
BAE
BAG
BAF
BAH
BBF
BBH
BCF
BCH
BDE
BDG
BDF
BDH
BEF
BEH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
BFE
BFG
BFF
BFH
BGF
BGH
BHF
BHH
BIE
BIG
BIF
BIH
BJF
BJH
CAE
CAG
CAF
CAH
CBF
CBH
CCF
CCH
CDE
CDG
CDF
CDH
CEF
CEH
Type 4X
Carbon
Steel
BAY
BAR
BAM
BAD
BBM
BBD
BCM
BCD
BDY
BDR
BDM
BDD
BEM
BED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
BFY
BFR
BFM
BFD
BGM
BGD
BHM
BHD
BIY
BIR
BIM
BID
BJM
BJD
CAY
CAR
CAM
CAD
CBM
CBD
CCM
CCD
CDY
CDR
CDM
CDD
CEM
CED
Type 7/9
Cast Iron
BKY
BKR
BKM
BKD
BLM
BLD
BMM
BMD
BNY
BNR
BNM
BND
BOM
BOD
BUY
BUR
BUM
BUD
BVM
BVD
BWM
BWD
BXY
BXR
BXM
BXD
BYM
BYD
BPY
BPR
BPM
BPD
BQM
BQD
BRM
BRD
BSY
BSR
BSM
BSD
BTM
BTD
CKY
CKR
CKM
CKD
CLM
CLD
CMM
CMD
CNY
CNR
CNM
CND
COM
COD
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
BAQ
B2Q
BKQ
—
BKS
BAP
B2P
BKP
—
BKT
BAB
B2B
BKB
BKW
BKK
BAA
B2A
BKA
BKV
BKJ
BBB
B4B
BLB
BLW
BLK
BBA
B4A
BLA
BLV
BLJ
BCB
B6B
BMB
BMW
BMK
BCA
B6A
BMA
BMV
BMJ
BDQ
B8Q
BNQ
—
BNS
BDP
B8P
BNP
—
BNT
BDB
B8B
BNB
BNW
BNK
BDA
B8A
BNA
BNV
BNJ
BEB
B1B
BOB
BOW
BOK
BEA
B1A
BOA
BOV
BOJ
—
—
BUQ
—
—
—
—
BUP
—
—
—
—
BUB
—
—
—
—
BUA
—
—
—
—
BVB
—
—
—
—
BVA
—
—
—
—
BWB
—
—
—
—
BWA
—
—
—
—
BXQ
—
—
—
—
BXP
—
—
—
—
BXB
—
—
—
—
BXA
—
—
—
—
BYB
—
—
—
—
BYA
—
—
BFQ
—
BPQ
—
—
BFP
—
BPP
—
—
BFB
—
BPB
—
—
BFA
—
BPA
—
—
BGB
—
BQB
—
—
BGA
—
BQA
—
—
BHB
—
BRB
—
—
BHA
—
BRA
—
—
BIQ
—
BSQ
—
—
BIP
—
BSP
—
—
BIB
—
BSB
—
—
BIA
—
BSA
—
—
BJB
—
BTB
—
—
BJA
—
BTA
—
—
CAQ
C2Q
CKQ
—
CKS
CAP
C2P
CKP
—
CKT
CAB
C2B
CKB
CKW
CKK
CAA
C2A
CKA
CKV
CKJ
CBB
C4B
CLB
CLW
CLK
CBA
C4A
CLA
CLV
CLJ
CCB
C6B
CMB
CMW
CMK
CCA
C6A
CMA
CMV
CMJ
CDQ
C8Q
CNQ
—
CNS
CDP
C8P
CNP
—
CNT
CDB
C8B
CNB
CNW
CNK
CDA
C8A
CNA
CNV
CNJ
CEB
C1B
COB
COW
COK
CEA
C1A
COA
COV
COJ
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
23
9.1
Switch
Type
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Short w/
Drain
Tall w/
Drain
Set
Points
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
Dry Contact
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Short
Tall
1
SPDT
Short
Tall
DPDT
DC Voltage
Dry Contact
Short w/
Drain
Tall w/
Drain
1
SPDT
2
3
DPDT
Short w/
Heater
Tall w/
Heater
1
2
Short w/
Heater
Tall w/
Heater
1
2
Short w/
Drain
Tall w/
Drain
2
3
1
SPDT
2
3
DPDT
1
2
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
—
—
CUQ
—
—
—
—
CUP
—
—
—
—
CUB
—
—
—
—
CUA
—
—
—
—
CVB
—
—
—
—
CVA
—
—
—
—
CWB
—
—
—
—
CWA
—
—
—
—
CXQ
—
—
—
—
CXP
—
—
—
—
CXB
—
—
—
—
CXA
—
—
—
—
CYB
—
—
—
—
CYA
—
—
CFQ
—
—
—
—
CFP
—
—
—
—
CFB
—
—
—
—
CFA
—
—
—
—
CGB
—
—
—
—
CGA
—
—
—
—
CHB
—
—
—
—
CHA
—
—
—
—
CIQ
—
—
—
—
CIP
—
—
—
—
CIB
—
—
—
—
CIA
—
—
—
—
CJB
—
—
—
—
CJA
—
—
—
—
DAQ
D2Q
DKQ
—
DKS
DAB
D2B
DKB
DKW
DKK
DBB
D4B
DLB
DLW
DLK
DCB
D6B
DMB
DMW
DMK
DDQ
D8Q
DNQ
—
DNS
DDB
D8B
DNB
DNW
DNK
DEB
D1B
DOB
DOW
DOK
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Yellow
Yellow
Yellow
Yellow
Yellow
Type 4
Carbon
Steel
—
—
—
—
—
—
—
—
—
—
—
—
—
—
CFE
CFG
CFF
CFH
CGF
CGH
CHF
CHH
CIE
CIG
CIF
CIH
CJF
CJH
DAE
DAF
DBF
DCF
DDE
DDF
DEF
Type 4X
Carbon
Steel
—
—
—
—
—
—
—
—
—
—
—
—
—
—
CFY
CFR
CFM
CFD
CGM
CGD
CHM
CHD
CIY
CIR
CIM
CID
CJM
CJD
DAY
DAM
DBM
DCM
DDY
DDM
DEM
Yellow
—
—
DUY
—
—
DUQ
—
—
Yellow
Yellow
Yellow
—
—
—
—
—
—
DUM
DVM
DWM
—
—
—
—
—
—
DUB
DVB
DWB
—
—
—
—
—
—
Yellow
—
—
DXY
—
—
DXQ
—
—
Yellow
Yellow
—
—
—
—
DXM
DYM
—
—
—
—
DXB
DYB
—
—
—
—
Yellow
DFE
DFY
DPY
DFQ
—
DPQ
—
—
Yellow
Yellow
Yellow
DFF
DGF
DHF
DFM
DGM
DHM
DPM
DQM
DRM
DFB
DGB
DHB
—
—
—
DPB
DQB
DRB
—
—
—
—
—
—
Yellow
DIE
DIY
DSY
DIQ
—
DSQ
—
—
Yellow
Yellow
DIF
DJF
DIM
DJM
DSM
DTM
DIB
DJB
—
—
DSB
DTB
—
—
—
—
Magnet
Dot Color
Type 7/9
Cast Iron
CUY
CUR
CUM
CUD
CVM
CVD
CWM
CWD
CXY
CXR
CXM
CXD
CYM
CYD
—
—
—
—
—
—
—
—
—
—
—
—
—
—
DKY
DKM
DLM
DMM
DNY
DNM
DOM
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
24
42-683 Electric Switch Mechanisms
9.1
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Switch
Type
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
1
SPDT
Tall
2
3
Short
1
DPDT
Tall
2
Short w/
Drain
Tall w/
Drain
1
SPDT
2
Vibration
Resistant
Mercury
3
Short w/
Drain
Tall w/
Drain
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Short
1
SPDT
Tall
Herm. Sealed
Dry Contact
2
Short
1
DPDT
Tall
2
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Type 4
Carbon
Steel
EAE
EAG
EAF
EAH
EBF
EBH
ECF
ECH
EDE
EDG
EDF
EDH
EEF
EEH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EFE
EFG
EFF
EFH
EGF
EGH
EHF
EHH
EIE
EIG
EIF
EIH
EJF
EJH
FAE
FAG
FAF
FAH
FBF
FBH
FDE
FDG
FDF
FDH
FEF
FEH
Type 4X
Carbon
Steel
EAY
EAR
EAM
EAD
EBM
EBD
ECM
ECD
EDY
EDR
EDM
EDD
EEM
EED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EFY
EFR
EFM
EFD
EGM
EGD
EHM
EHD
EIY
EIR
EIM
EID
EJM
EJD
FAY
FAR
FAM
FAD
FBM
FBD
FDY
FDR
FDM
FDD
FEM
FED
Type 7/9
Cast Iron
EKY
EKR
EKM
EKD
ELM
ELD
EMM
EMD
ENY
ENR
ENM
END
EOM
EOD
EUY
EUR
EUM
EUD
EVM
EVD
EWM
EWD
EXY
EXR
EXM
EXD
EYM
EYD
EPY
EPR
EPM
EPD
EQM
EQD
ERM
ERD
ESY
ESR
ESM
ESD
ETM
ETD
FKY
FKR
FKM
FKD
FLM
FLD
FNY
FNR
FNM
FND
FOM
FOD
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
EAQ
—
EKQ
—
EKS
EAP
—
EKP
—
EKT
EAB
—
EKB
EKW
EKK
EAA
—
EKA
EKV
EKJ
EBB
—
ELB
ELW
ELK
EBA
—
ELA
ELV
ELJ
ECB
—
EMB
EMW
EMK
ECA
—
EMA
EMV
EMJ
EDQ
—
ENQ
—
ENS
EDP
—
ENP
—
ENT
EDB
—
ENB
ENW
ENK
EDA
—
ENA
ENV
ENJ
EEB
—
EOB
EOW
EOK
EEA
—
EOA
EOV
EOJ
—
—
EUQ
—
—
—
—
EUP
—
—
—
—
EUB
—
—
—
—
EUA
—
—
—
—
EVB
—
—
—
—
EVA
—
—
—
—
EWB
—
—
—
—
EWA
—
—
—
—
EXQ
—
—
—
—
EXP
—
—
—
—
EXB
—
—
—
—
EXA
—
—
—
—
EYB
—
—
—
—
EYA
—
—
EFQ
—
EPQ
—
—
EFP
—
EPP
—
—
EFB
—
EPB
—
—
EFA
—
EPA
—
—
EGB
—
EQB
—
—
EGA
—
EQA
—
—
EHB
—
ERB
—
—
EHA
—
ERA
—
—
EIQ
—
ESQ
—
—
EIP
—
ESP
—
—
EIB
—
ESB
—
—
EIA
—
ESA
—
—
EJB
—
ETB
—
—
EJA
—
ETA
—
—
FAQ
F2Q
FKQ
—
FKS
FAP
F2P
FKP
—
FKT
FAB
FCB
FKB
FKW
FKK
FAA
FCA
FKA
FKV
FKJ
FBB
FFB
FLB
FLW
FLK
FBA
FFA
FLA
FLV
FLJ
FDQ
F8Q
FNQ
—
FNS
FDP
F8P
FNP
—
FNT
FDB
FGB
FNB
FNW
FNK
FDA
FGA
FNA
FNV
FNJ
FEB
FHB
FOB
FOW
FOK
FEA
FHA
FOA
FOV
FOJ
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
25
9.1
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Switch
Type
Housing
Height
& Options
Switch
Contacts
Set
Points
SPDT
Tall
DPDT
Dual Magnet
Dry Contact
1
Tall w/
Drain
SPDT
DPDT
SPDT
Tall
DPDT
Dual Magnet
Dry Contact
1
Tall w/
Drain
SPDT
DPDT
SPDT
Tall
DPDT
DC Voltage
Dual Magnet
Dry Contact
1
Tall w/
Drain
High Temp
Mercury
for B40
Tall
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
1
Short
1
High Temp
Mercury
with
Manual Reset*
SPDT
Tall
*All Housing
on manual
reset switches
Type/NEMA 1
only.
2
3
Short
1
DPDT
Tall
2
X-Tall
Mercury
for
C10/C15
X-Tall w/
Heater
X-Tall w/
Drain
X-Tall
Dry Contact
for
C10/C15
X-Tall w/
Heater
X-Tall w/
Drain
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
3
Yellow
3
Yellow
Type 4
Carbon
Steel
Type 4X
Carbon
Steel
Type 7/9
Cast Iron
GAF
GAH
GDF
GDH
—
—
—
—
HAF
HAH
HDF
HDH
—
—
—
—
IAF
IAH
IDF
IDH
—
—
—
—
LAF
LDF
LBF
LEF
MAE
MAG
MAF
MAH
MBF
MBH
—
MCF
MCH
—
MDE
MDG
MDF
MDH
MEF
MEH
NCF
NEF
NHF
NJF
—
—
OCF
OEF
OHF
OJF
—
—
GAM
GAD
GDM
GDD
—
—
—
—
HAM
HAD
HDM
HDD
—
—
—
—
IAM
IAD
IDM
IDD
—
—
—
—
LAM
LDM
LBM
LEM
MAY
MAR
MAM
MAD
MBM
MBD
MBE
MCM
MCD
MCE
MDY
MDR
MDM
MDD
MEM
MED
NCM
NEM
NHM
NJM
—
—
OCM
OEM
OHM
OJM
—
—
GKM
GKD
GNM
GND
GUM
GUD
GXM
GXD
HKM
HKD
HNM
HND
HUM
HUD
HXM
HXD
IKM
IKD
INM
IND
IUM
IUD
IXM
IXD
LKM
LNM
LLM
LOM
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NMM
NKM
NRM
NLM
NWM
NNM
OMM
OKM
ORM
OLM
OWM
ONM
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LAB
LDB
LBB
LEB
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NCB
NEB
NHB
NJB
—
—
OCB
OEB
OHB
OJB
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
L2B
L8B
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LKB
LNB
LLB
LOB
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NMB
NKB
NRB
NLB
NWB
NNB
OMB
OKB
ORB
OLB
OWB
ONB
GKW
GKV
GNW
GNV
—
—
—
—
HKW
HKV
HNW
HNV
—
—
—
—
IKW
IKV
INW
INV
—
—
—
—
LKW
LNW
LLW
LOW
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NMI
NKI
—
—
—
—
OMI
OKI
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LKK
LNK
LLK
LOK
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NMN
NKN
—
—
—
—
OMN
OKN
—
—
—
—
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
26
42-683 Electric Switch Mechanisms
9.1
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Switch
Type
Housing
Height
& Options
X-Tall
Dry Contact
for
C10/C15
Dry Contact
for B40
DC Dry Contact
for B40
Vibration
Resistant
Mercury
For
C10/C15
X-Tall w/
Heater
X-Tall w/
Drain
Tall
X-Tall
X-Tall w/
Heater
X-Tall w/
Drain
Switch
Contacts
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
Set
Points
3
Yellow
1
Yellow
3
Yellow
Short
1
SPDT
Tall
2
3
Short
1
DPDT
Tall
Dry
Contact
w/Gold Alloy
Contacts
2
Short w/
Drain
Tall w/
Drain
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
1
DPDT
2
Short
1
Hermetically
Sealed
Dry Contact
SPDT
Tall
2
3
Short
Tall
DPDT
Magnet
Dot Color
1
2
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Yellow
Type 4
Carbon
Steel
Type 4X
Carbon
Steel
Type 7/9
Cast Iron
QCF
QEF
QHF
QJF
—
—
SAF
SDF
SBF
SEF
TCF
TEF
THF
TJF
—
—
UAE
UAG
UAF
UAH
UBF
UBH
UCF
UCH
UDE
UDG
UDF
UDH
UEF
UEH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WAE
WAG
WAF
WAH
WBF
WBH
WCF
WCH
WDE
WDF
WEF
QCM
QEM
QHM
QJM
—
—
SAM
SDM
SBM
SEM
TCM
TEM
THM
TJM
—
—
UAY
UAR
UAM
UAD
UBM
UBD
UCM
UCD
UDY
UDR
UDM
UDD
UEM
UED
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WAY
WAR
WAM
WAD
WBM
WBD
WCM
WCD
WDY
WDM
WEM
QMM
QKM
QRM
QLM
QWM
QNM
SKM
SNM
SLM
SOM
TMM
TKM
TRM
TLM
TWM
TNM
UKY
UKR
UKM
UKD
ULM
ULD
UMM
UMD
UNY
UNR
UNM
UND
UOM
UOD
—
—
UUM
UUD
UVM
UVD
UWM
UWD
—
—
UXM
UXD
UYM
UYD
WKY
WKR
WKM
WKD
WLM
WLD
WMM
WMD
WNY
WNM
WOM
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
QCB
QEB
QHB
QJB
—
—
SAB
SDB
SBB
SEB
TCB
TEB
THB
TJB
—
—
UAQ
UAP
UAB
UAA
UBB
UBA
UCB
UCA
UDQ
UDP
UDB
UDA
UEB
UEA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WAQ
WAP
WAB
WAA
WBB
WBA
WCB
WCA
WDQ
WDB
WEB
—
—
—
—
—
—
S2B
S8B
S2R
S8R
—
—
—
—
—
—
U2Q
U2P
U2B
U2A
U4B
U4A
U6B
U6A
U8Q
U8P
U8B
U8A
U1B
U1A
—
—
—
—
—
—
—
—
—
—
—
—
—
—
W2Q
W2P
W2B
W2A
W4B
W4A
W6B
W6A
W8Q
W8B
W1B
QMB
QKB
QRB
QLB
QWB
QNB
SKB
SNB
SLB
SOB
TMB
TKB
TRB
TLB
TWB
TNB
UKQ
UKP
UKB
UKA
ULB
ULA
UMB
UMA
UNQ
UNP
UNB
UNA
UOB
UOA
UUQ
—
UUB
—
UVB
—
UWB
—
UXQ
—
UXB
—
UYB
—
WKQ
WKP
WKB
WKA
WLB
WLA
WMB
WMA
WNQ
WNB
WOB
QMI
QKI
—
—
—
—
SKW
SNW
SLW
SOW
TMI
TKI
—
—
—
—
—
—
UKW
—
ULW
—
UMW
—
—
—
UNW
—
UOW
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WKW
—
WLW
—
WMW
—
—
WNW
WOW
QMN
QKN
—
—
—
—
SKK
SNK
SLK
SOK
TMN
TKN
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WKS
WKT
WKK
—
WLK
—
WMK
—
WNS
WNK
WOK
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
27
9.1
Switch
Type
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Short w/
Drain
Hermetically
Sealed
Dry Contact
Tall w/
Drain
Set
Points
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
DPDT
1
1
SPDT
Tall
2
3
Short
Hermetically
Sealed
Dry Contact
w/Gold
Tall
DPDT
1
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
Type 4X
Carbon
Steel
Type 7/9
Cast Iron
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WUM
WUD
WVM
WVD
WWM
WWD
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WUQ
WUP
WUB
WUA
WVB
WVA
WWB
WWA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
WXQ
—
—
—
—
XAE
XAG
XAF
XAH
XBF
XBH
XCF
XCH
XDE
XDF
XEF
—
—
—
—
—
—
—
—
—
—
XAY
XAR
XAM
XAD
XBM
XBD
XCM
XCD
XDY
XDM
XEM
—
—
—
—
—
—
—
—
WXM
WYM
XKY
XKR
XKM
XKD
XLM
XLD
XMM
XMD
XNY
XNM
XOM
—
—
XUM
XUD
XVM
XVD
XWM
XWD
—
—
XAQ
XAP
XAB
XAA
XBB
XBA
XCB
XCA
XDQ
XDB
XEB
—
—
—
—
—
—
—
—
—
—
X2Q
X2P
X2B
X2A
X4B
X4A
X6B
X6A
X8Q
X8B
X1B
—
—
—
—
—
—
—
—
WXB
—
XKQ
XKP
XKB
XKA
XLB
XLA
XMB
XMA
XNQ
XNB
XOB
XUQ
XUP
XUB
XUA
XVB
XVA
XWB
XWA
—
—
—
—
XKW
—
XLW
—
XMW
—
—
XNW
XOW
—
—
—
—
—
—
—
—
—
—
XKS
XKT
XKK
—
XLK
—
XMK
—
XNS
XNK
XOK
—
—
—
—
—
—
—
—
—
—
—
—
—
XXQ
—
—
—
—
2AE
2AG
2AF
2AH
2BF
2BH
—
2CF
2CH
—
2DE
2DG
2DF
2DH
2EF
2EH
—
—
2AY
2AR
2AM
2AD
2BM
2BD
—
2CM
2CD
—
2DY
2DR
2DM
2DD
2EM
2ED
XXM
XYM
2KY
2KR
2KM
2KD
2LM
2LD
—
2MM
2MD
—
2NY
2NR
2NM
2ND
2OM
2OD
—
—
2AQ
2AP
2AB
2AA
2BB
2BA
2BE
2CB
2CA
2CE
2DQ
2DP
2DB
2DA
2EB
2EA
—
—
22Q
22P
22B
22A
24B
24A
24E
26B
26A
26E
28Q
28P
28B
28A
21B
21A
XXB
X4B
2KQ
2KP
2KB
2KA
2LB
2LA
2LE
2MB
2MA
2ME
2NQ
2NP
2NB
2NA
2OB
2OA
—
—
—
—
2KW
2KV
2LW
2LV
—
2MW
2MV
—
—
—
2NW
2NV
2OW
2OV
—
—
2KS
2KT
2KK
2KJ
2LK
2LJ
2LG
2MK
2MJ
2MG
2NS
2NT
2NK
2NJ
2OK
2OJ
Yellow
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
2
Short w/
Drain
Tall w/
Drain
Type 4
Carbon
Steel
2
Short
DPDT
1
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
2
Short
1
SPDT
Tall
High Temp
Vibration
Resistant
Mercury
2
3
Short
1
DPDT
Tall
2
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
28
42-683 Electric Switch Mechanisms
9.1
Switch
Type
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Short w/
Drain
Tall w/
Drain
Set
Points
1
SPDT
2
3
Short w/
Drain
High Temp
Vibration
Resistant
Mercury
Tall w/
Drain
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Short
1
SPDT
Tall
High Temp
Mercury
2
3
Short
1
DPDT
Tall
2
Magnet
Dot Color
Type 4
Carbon
Steel
Type 4X
Carbon
Steel
Type 7/9
Cast Iron
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2FE
2FG
2FF
2FH
2GF
2GH
—
2HF
2HH
—
2IE
2IG
2IF
2IH
2JF
2JH
3AE
3AG
3AF
3AH
3BF
3BH
—
3CF
3CH
—
3DE
3DG
3DF
3DH
3EF
3EH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2FY
2FR
2FM
2FD
2GM
2GD
—
2HM
2HD
—
2IY
2IR
2IM
2ID
2JM
2JD
3AY
3AR
3AM
3AD
3BM
3BD
—
3CM
3CD
—
3DY
3DR
3DM
3DD
3EM
3ED
2UY
2UR
2UM
2UD
2VM
2VD
—
2WM
2WD
—
2XY
2XR
2XM
2XD
2YM
2YD
2PY
2PR
2PM
2PD
2QM
2QD
—
2RM
2RD
—
2SY
2SR
2SM
2SD
2TM
2TD
3KY
3KR
3KM
3KD
3LM
3LD
—
3MM
3MD
—
3NY
3NR
3NM
3ND
3OM
3OD
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2FQ
2FP
2FB
2FA
2GB
2GA
—
2HB
2HA
—
2IQ
2IP
2IB
2IA
2JB
2JA
3AQ
3AP
3AB
3AA
3BB
3BA
3BE
3CB
3CA
3CE
3DQ
3DP
3DB
3DA
3EB
3EA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
32Q
32P
32B
32A
34B
34A
34E
36B
36A
36E
38Q
38P
38B
38A
31B
31A
2UQ
2UP
2UB
2UA
2VB
2VA
2VE
2WB
2WA
2WE
2XQ
2XP
2XB
2XA
2YB
2YA
2PQ
2PP
2PB
2PA
2QB
2QA
2QE
2RB
2RA
2RE
2SQ
2SP
2SB
2SA
2TB
2TA
3KQ
3KP
3KB
3KA
3LB
3LA
3LE
3MB
3MA
3ME
3NQ
3NP
3NB
3NA
3OB
3OA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3KW
3KV
3LW
3LV
—
3MW
3MV
—
—
—
3NW
3NV
3OW
3OV
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3KS
3KT
3KK
3KJ
3LK
3LJ
3LG
3MK
3MJ
3MG
3NS
3NT
3NK
3NJ
3OK
3OJ
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
29
9.1
Switch
Type
Type 4, 4X, 7, 9 and Group B Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Short w/
Drain
Tall w/
Drain
Set
Points
1
SPDT
2
3
Short w/
Drain
Tall w/
Drain
High Temp
Mercury
1
DPDT
2
Short w/
Heater
Tall w/
Heater
1
SPDT
2
3
Short w/
Heater
Tall w/
Heater
1
DPDT
2
Magnet
Dot Color
Type 4
Carbon
Steel
Type 4X
Carbon
Steel
Type 7/9
Cast Iron
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3FE
3FG
3FF
3FH
3GF
3GH
—
3HF
3HH
—
3IE
3IG
3IF
3IH
3JF
3JH
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3FY
3FR
3FM
3FD
3GM
3GD
—
3HM
3HD
—
3IY
3IR
3IM
3ID
3JM
3JD
3UY
3UR
3UM
3UD
3VM
3VD
—
3WM
3WD
—
3XY
3XR
3XM
3XD
3YM
3YD
3PY
3PR
3PM
3PD
3QM
3QD
—
3RM
3RD
—
3SY
3SR
3SM
3SD
3TM
3TD
Type 4X
Type 4X
Type 4X/7/9
Type 4X/7/9 Group B
Cast Alum Cast Alum
Group B
Cast
Alum
Cast
Iron
M20 ¥ 1.5
1" NPT
Cast Alum
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3FQ
3FP
3FB
3FA
3GB
3GA
—
3HB
3HA
—
3IQ
3IP
3IB
3IA
3JB
3JA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3UQ
3UP
3UB
3UA
3VB
3VA
3VE
3WB
3WA
3WE
3XQ
3XP
3XB
3XA
3YB
3YA
3PQ
3PP
3PB
3PA
3QB
3QA
3QE
3RB
3RA
3RE
3SQ
3SP
3SB
3SA
3TB
3TA
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
30
42-683 Electric Switch Mechanisms
9.2
Switch
Type
ATEX Enclosure Codes
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
1
SPDT
Tall
2
3
Mercury
Short
1
DPDT
Tall
2
Short
1
SPDT
Tall
2
3
Dry Contact
Short
1
DPDT
Tall
2
Short
1
SPDT
Tall
2
3
Dry Contact
Short
1
DPDT
Tall
2
Short
DC Voltage
Dry Contact
Tall
1
SPDT
Short
Tall
DPDT
2
3
1
2
Short
1
Vibration
Resistant
Mercury
SPDT
Tall
2
3
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Yellow
Yellow
Yellow
Yellow
Yellow
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
ATEX XP
Cast Iron
3/4" NPT
—
—
AU5
AU7
AV5
AV7
A75
A77
—
—
AW5
AW7
AY5
AY7
—
—
BU5
BU7
BV5
BV7
B75
B77
—
—
BW5
BW7
BY5
BY7
—
—
CU5
CU7
CV5
CV7
C75
C77
—
—
CW5
CW7
CY5
CY7
—
DU5
DV5
D75
—
DW5
DY5
—
—
EU5
EU7
EV5
EV7
E75
E77
ATEX XP
ATEX XP
ATEX IS
ATEX XP
ATEX IS
Cast Iron Cast Alum Cast Alum Cast Alum Cast Alum
M20 ¥ 1.5
M20 ¥ 1.5
M20 ¥ 1.5
1" NPT
1" NPT
—
AA9
AH9
—
—
—
AAC
AHC
—
—
AK5
AC9
AK9
—
—
AK7
ACC
AKC
—
—
AL5
AD9
AL9
—
—
AL7
ADC
ALC
—
—
A65
AE9
AM9
—
—
A67
AEC
AMC
—
—
—
AB9
AJ9
—
—
—
ABC
AJC
—
—
AD5
AF9
AN9
—
—
AD7
AFC
ANC
—
—
AO5
AG9
AP9
—
—
AO7
AGC
APC
—
—
—
BA9
BH9
—
—
—
BAC
BHC
—
—
BK5
BC9
BK9
—
—
BK7
BCC
BKC
—
—
BL5
BD9
BL9
—
—
BL7
BDC
BLC
—
—
B65
BE9
BM9
—
—
B67
BEC
BMC
—
—
—
BB9
BJ9
—
—
—
BBC
BJC
—
—
BD5
BF9
BN9
—
—
BD7
BFC
BNC
—
—
BO5
BG9
BP9
—
—
BO7
BGC
BPC
—
—
—
CA9
CH9
CAS
C2S
—
CAC
CHC
CAL
C2L
CK5
CC9
CK9
CAT
C2T
CK7
CCC
CKC
CAX
C2X
CL5
CD9
CL9
CBT
C4T
CL7
CDC
CLC
CBX
C4X
C65
CE9
CM9
—
—
C67
CEC
CMC
—
—
—
CB9
CJ9
CDS
C8S
—
CBC
CJC
CDL
C8L
CD5
CF9
CN9
CDT
C8T
CD7
CFC
CNC
CDX
C8X
CO5
CG9
CP9
CET
C1T
CO7
CGC
CPC
CEX
C1X
—
DA9
DH9
—
—
DK5
DC9
DK9
—
—
DL5
DD9
DL9
—
—
D65
DE9
DM9
—
—
—
DB9
DJ9
—
—
DD5
DF9
DN9
—
—
DO5
DG9
DP9
—
—
—
EA9
EH9
—
—
—
EAC
EHC
—
—
EK5
EC9
EK9
—
—
EK7
ECC
EKC
—
—
EL5
ED9
EL9
—
—
EL7
EDC
ELC
—
—
E65
EE9
EM9
—
—
E67
EEC
EMC
—
—
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
31
9.2
ATEX Enclosure Codes
Switch
Type
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
Vibration
Resistant
Mercury
1
DPDT
Tall
2
Short
1
SPDT
2
Tall
Herm. Sealed
Dry Contact
3
Short
1
DPDT
Tall
2
High Temp
Mercury
for B40
Dry Contact
for B40
DC Dry Contact
for B40
Tall
Tall
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
SPDT
DPDT
Yellow
1
Yellow
1
SPDT
2
Dry
Contact
w/Gold Alloy
Contacts
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
1
Short
Tall
Magnet
Dot Color
3
Short
1
DPDT
Tall
2
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
ATEX XP
Cast Iron
3/4" NPT
—
—
EW5
EW7
EY5
EY7
—
—
FU5
FU7
FV5
FV7
—
—
—
—
FW5
FW7
FY5
FY7
—
—
—
—
—
—
—
—
—
—
UU5
UU7
UV5
UV7
U75
U77
—
—
UW5
UW7
UY5
UY7
ATEX XP
ATEX XP
ATEX IS
ATEX XP
ATEX IS
Cast Iron Cast Alum Cast Alum Cast Alum Cast Alum
M20 ¥ 1.5
M20 ¥ 1.5
M20 ¥ 1.5
1" NPT
1" NPT
—
EB9
EJ9
—
—
—
EBC
EJC
—
—
ED5
EF9
EN9
—
—
ED7
EFC
ENC
—
—
EO5
EG9
EP9
—
—
EO7
EGC
EPC
—
—
—
FA9
FH9
—
—
—
FAC
FHC
—
—
FK5
FC9
FK9
—
—
FK7
FCC
FKC
—
—
FL5
FD9
FL9
—
—
FL7
FDC
FLC
—
—
—
—
—
—
—
—
—
—
—
—
—
FB9
FJ9
—
—
—
FBC
FJC
—
—
FD5
FF9
FN9
—
—
FD7
FFC
FNC
—
—
FO5
FG9
FP9
—
—
FO7
FGC
FPC
—
—
—
LC9
LK9
—
—
—
LF9
LN9
—
—
—
LA9
LH9
—
—
—
LB9
LJ9
—
—
—
SA9
SH9
—
—
—
SB9
SJ9
—
—
—
SC9
SK9
—
—
—
SF9
SN9
—
—
—
UA9
UH9
UAS
U2S
—
UAC
UHC
UAL
U2L
UK5
UC9
UK9
UAT
U2T
UK7
UCC
UKC
UAX
U2X
UL5
UD9
UL9
UBT
U4T
UL7
UDC
ULC
UBX
U4X
U65
UE9
UM9
UCT
ULT
U67
UEC
UMC
UCX
ULX
—
UB9
UJ9
UDS
U8S
—
UBC
UJC
UDL
U8L
UD5
UF9
UN9
UDT
U8T
UD7
UFC
UNC
UDX
U8X
UO5
UG9
UP9
UET
U1T
UO7
UGC
UPC
UEX
U1X
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
32
42-683 Electric Switch Mechanisms
9.2
ATEX Enclosure Codes
Switch
Type
Housing
Height
& Options
Switch
Contacts
Set
Points
Short
1
SPDT
Herm. Sealed
Dry Contact
Tall
2
3
Short
Tall
DPDT
1
2
Short
1
Herm. Sealed
Dry Contact
w/ Gold
SPDT
Tall
2
3
Short
Tall
DPDT
1
2
Short
1
SPDT
Tall
High Temp
Vibration
Resistant
Mercury
2
3
Short
1
DPDT
Tall
2
Short
1
SPDT
Tall
High Temp
Mercury
2
3
Short
1
DPDT
Tall
2
Magnet
Dot Color
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Yellow
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Yellow
Yellow
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
Yellow
Red
R/B
Yellow
Red
R/B/B
Yellow
Red
Yellow
Red
Yellow
Red
ATEX XP
Cast Iron
3/4" NPT
—
—
WU5
WU7
WV5
WV7
W75
W77
—
WW5
WY5
—
—
XU5
XU7
XV5
XV7
X75
X77
—
XW5
XY5
—
—
2U5
2U7
2V5
—
2V7
275
—
277
—
—
2W5
2W7
2Y5
2Y7
—
—
3U5
3U7
3V5
—
3V7
375
—
377
—
—
3W5
3W7
3Y5
3Y7
ATEX XP
ATEX XP
ATEX IS
ATEX XP
ATEX IS
Cast Iron Cast Alum Cast Alum Cast Alum Cast Alum
M20 ¥ 1.5
M20 ¥ 1.5
M20 ¥ 1.5
1" NPT
1" NPT
—
WA9
WH9
WAS
W2S
—
WAC
WHC
WAL
W2L
WK5
WC9
WK9
WAT
W2T
WK7
WCC
WKC
WAX
W2X
WL5
WD9
WL9
WBT
W4T
WL7
WDC
WLC
WBX
W4X
W65
WE9
WM9
—
—
W67
WEC
WMC
—
—
—
WB9
WJ9
WDS
W8S
WD5
WF9
WN9
WDT
W8T
WO5
WG9
WP9
WET
W1T
—
XA9
XH9
XAS
X2S
—
XAC
XHC
XAL
X2L
XK5
XC9
XK9
XAT
X2T
XK7
XCC
XKC
XAX
X2X
XL5
XD9
XL9
XBT
X4T
XL7
XDC
XLC
XBX
X4X
X65
XE9
XM9
—
—
X67
XEC
XMC
—
—
—
XB9
XJ9
XDS
X8S
XD5
XF9
XN9
XDT
X8T
XO5
XG9
XP9
XET
X1T
—
2A9
2H9
—
—
—
2AC
2HC
—
—
2K5
2C9
2K9
—
—
2K7
2CC
2KC
—
—
2L5
2D9
2L9
—
—
—
2DC
2LC
—
—
2L7
2DE
29E
—
—
265
2E9
2M9
—
—
—
2EC
2MC
—
—
267
2EE
28E
—
—
—
2B9
2J9
—
—
—
2BC
2JC
—
—
2D5
2F9
2N9
—
—
2D7
2FC
2NC
—
—
2O5
2G9
2P9
—
—
2O7
2GC
2PC
—
—
—
3A9
3H9
—
—
—
3AC
3HC
—
—
3K5
3C9
3K9
—
—
3K7
3CC
3KC
—
—
3L5
3D9
3L9
—
—
—
3DC
3LC
—
—
3L7
3DE
39E
—
—
365
3E9
3M9
—
—
—
3EC
3MC
—
—
367
3EE
38E
—
—
—
3B9
3J9
—
—
—
3BC
3JC
—
—
3D5
3F9
3N9
—
—
3D7
3FC
3NC
—
—
3O5
3G9
3P9
—
—
3O7
3GC
3PC
—
—
The switch and housing codes in bold are currently valid and available. Those not in bold are no longer valid.
42-683 Electric Switch Mechanisms
33
NOTES
34
42-683 Electric Switch Mechanisms
NOTES
42-683 Electric Switch Mechanisms
35
ASSURED QUALITY & SERVICE COST LESS
Service Policy
Return Material Procedure
Owners of Magnetrol may request the return of a control
or any part of a control for complete rebuilding or replacement. They will be rebuilt or replaced promptly. Controls
returned under our service policy must be returned by
Prepaid transportation. Magnetrol will repair or replace
the control at no cost to the purchaser (or owner) other
than transportation if:
So that we may efficiently process any materials that are
returned, it is essential that a “Return Material
Authorization” (RMA) number be obtained from the
factory, prior to the material’s return. This is available
through your Magnetrol local representative or
by contacting the factory. Please supply the following
information:
1. Returned within the warranty period; and
2. The factory inspection finds the cause of the claim
to be covered under the warranty.
If the trouble is the result of conditions beyond our control; or, is NOT covered by the warranty, there will be
charges for labor and the parts required to rebuild or
replace the equipment.
In some cases it may be expedient to ship replacement
parts; or, in extreme cases a complete new control, to
replace the original equipment before it is returned. If
this is desired, notify the factory of both the model and
serial numbers of the control to be replaced. In such
cases, credit for the materials returned will be determined
on the basis of the applicability of our warranty.
1.
2.
3.
4.
5.
Company Name
Description of Material
Serial Number
Reason for Return
Application
Any unit that was used in a process must be properly
cleaned in accordance with OSHA standards, before it is
returned to the factory.
A Material Safety Data Sheet (MSDS) must accompany
material that was used in any media.
All shipments returned to the factory must be by prepaid
transportation.
All replacements will be shipped F.O.B. factory.
No claims for misapplication, labor, direct or consequential damage will be allowed.
705 Enterprise Street • Aurora, Illinois 60504-8149 • 630-969-4000 • Fax 630-969-9489
[email protected] • www.magnetrol.com
Copyright © 2015 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
BULLETIN: 42-683.17
EFFECTIVE: March 2015
SUPERSEDES: July 2012