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This PDF catalog information was published in November 2000.
Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, IL 61032
www.honeywell.com/sensing
Limit and Enclosed Switches
Explosion-Proof Switches
EX Series
FEATURES
1 NEMA 1, 7 and 9
1 Compact, rugged housing
1 Up to 20 amp capacity
1 Ample wiring space
1 Mounts from 4 sides
1 Roller arms adjustable through 360°
1 Non-sparking actuators
1 Captive cover screws
1 UL Listed, file #E14274
1 CSA Certified, file #LR57324
1 Grounding screw
Single-Conduit
Connect Switch*
NEMA
EX switches feature the smallest UL-listed
housings available for use in hazardous locations. Flame paths within the housing
cool exploding gases below the kindling
temperature before they reach the explosive
gases surrounding the housing.
The enclosed switching unit, which is held in
place by screws, is accessible when the
cover plate is removed. A tapped conduit
opening is located in one end of one group
of EX listings (pages A122-A123); while a
second group (page A124) has a conduit
opening in each end of the switch.
These switches are not sealed against liquids and are not intended to be subjected to
liquid splash or for outdoor applications. If a
sealed explosion-proof switch is required,
refer to the type CX and LSX.
ELECTRICAL RATINGS
Circuitry
Electrical Ratings
A
UL/CSA Rating:
15 amps, 125, 250 or 480 VAC;
1⁄8 Hp, 125 VAC; 1⁄4 Hp, 250 VAC;
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
B
UL/CSA Rating:
20 amps, 125, 250 or 480 VAC;
10 amps, 125 VAC ‘‘L’’;
1 Hp, 125 VAC; 2 Hp, 250 VAC;
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
Single-Pole
Double-Throw
Single-Pole
Double-Throw
C
UL/CSA Rating:
10 amps, 125 or 250 VAC;
0.3 amp, 125 VDC; 0.15 amp, 250 VDC.
Double-Pole
Double-Throw
Also refer to NEMA application note in the
Reference Standards section at the rear of
this catalog.
TEMPERATURE RANGE
EX switches are for use in a temperature
range of – 40 to 160°F (– 40 to 71°C). For
applications outside these limits, please call
the 800 number.
ACTUATORS
Roller arm versions are designed for cam or
slide operation. Listings include clockwise
and counterclockwise actuation. Levers are
adjustable through 360°. The roller is nonsparking material.
The cross-roller arm switch is for use where
the operating mechanism approaches from
a direction perpendicular to the longitudinal
axis of the switch.
The overtravel plunger has a case hardened, radius tipped, push-rod plunger guided
by a sturdy bushing.
The manually operated switch has a large
paddle-shaped actuator.
REPLACEMENT PARTS
D
UL/CSA Rating:
10 amps, 125, 250 or 480 VAC;
1⁄2 amp, 125 VDC; 1⁄4 amp, 250 VDC.
E
UL Rating:
1 amp, 125 VAC.
Single-Pole
Double-Throw
Available replacement parts are listed on
page A125. An installation sheet packed
with each switch describes these parts in
detail and explains how they are installed.
Single-Pole
Double-Throw
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A121
Limit/Enclosed
* See page A124 for double conduit connect switches.
NEMA standards: 1, 7 and 9.
UL listed and CSA certified: Class I, Div. 1,
Groups B, C and D (Group B - only as noted
in order guides); and Class II, Div. 1, Groups
E, F and G.
Limit and Enclosed Switches
Explosion-Proof Switches
ROLLER LEVER ACTUATED
SWITCHES
EX Series
ORDER GUIDE
Elec.
Rating
Pg. A121
Description
AUXILIARY ACTUATORS
Order rotary actuators for the EX-AR20 from
the selection shown below.
Roller Lever
6PA5-EX
(Bronze roller)
6PA127-EX
(Nylon roller)
Cross Roller Lever
6PA131-EX
(Bronze roller)
One-Way Roller Lever
For CW
actuation:
6PA130-EX
(Bronze roller)
For CCW
actuation:
6PA142-EX
(Bronze roller)
Catalog
Listing
O.F.
P.T.
max.
mm O.T.
in.
max.
CW actuation*. 15 amp. SPDT.
A
EX-AR
2,22-5,56 N
.5-1.25 lb.
5,56
.219
(8°)
90°
0,18
.007
(0.25°)
CW actuation*. 20 amp. SPDT.
B
EXA-AR
3,34-8,90 N
.75-2 lb.
5.56
.219
25°
0,3
.012
(4°)
CCW actuation*. 15 amp. SPDT.
A
EX-AR30
11,1 N
2.5 lb. max.
2,65
.065
25°
0,18
.007
(0.25°)
CW or CCW actuation*. 15 amp.
Low O.F. (no return spring).
Without mtg. bracket. SPDT.
A
EX-AR16
0,56 N
2 oz. max.
—
—
—
CW actuation*.
15 amp. SPDT.
A
EX-AR800
2,22-5,56 N
.5-1.25 lb.
5,56
.219
90°
0,18
.007
(0.25°)
CCW actuation*.
15 amp. SPDT.
A
EX-AR830
11,1 N
2.5 lb. max.
1,65
.065
25°
0,18
.007
(0.25°)
CW actuation*.
10 amp. DPDT.
C
EXD-AR-3†
2,22-6,67 N
.5-1.5 lb.
6,35
.250
25°
2,77
.109
(4°)
CCW actuation*.
10 amp. DPDT.
C
EXD-AR30-3†
12,2 N
2.75 lb.
5,56
.219
25°
2,77
.109
CW actuation*. 1
amp.** SPDT.
E
EXH-AR3
2,22-6,67 N
.5-1.5 lb.
5,56
.219
25°
0,64
.025
CCW actuation*.
1 amp.** SPDT.
E
EXH-AR33
11,1 N
2.5 lb. max.
1,65
.065
(3.5°)
25°
0,64
.025
No lever furnished. (Order levers
shown at left of this page as
separate items.) CW actuation*.
SPDT.
A
EX-AR20
0,22 Nm
31.25 in./oz.
5,56
.219
90°
0,18
.007
(0.25°)
As above except CCW actuation.
A
EX-AR230
0,22 Nm
31.25 in./oz.
5,56
.219
90°
0,18
.007
(0.25°)
Also UL
listed
and
CSA
certified
for
Class I
Group B
(hydrogen)
atmospheres.
Nm J Newton meters
* CW (clockwise) or CCW actuation, when looking
at nameplate.
** Hermetically sealed switching unit, furnished with
10.5 ft./3,2 m leadwire.
† Furnished with 0,91 m (3 ft.) leadwire
Characteristics; O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel
For rapid response – off the shelf service, all bold face listings are normally stocked
items.
Adjustable Length
Roller Lever
6PA138-EX
(Nylon roller)
Adjustable length 12.5 N max. rod lever
with 1N nylon roller.
Rod Lever
6PA136-EX
(Aluminum rod)
A122
D.T.
max.
mm
in.
6PA204-EX
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Explosion-Proof Switches
EX Series
CROSS ROLLER LEVER ACTUATED SWITCH
ORDER GUIDE
Description
Elec.
Rating
Pg. A121
Catalog
Listing
A
EX-CR
CW actuation* 15 amp.
SPDT
O.F.
N
oz.
2,22-5,56
8-20
P.T.
max.
mm O.T.
in.
max.
D.T.
max.
mm
in.
5,56
.219
0,18
.007
90°
ONE-WAY ROLLER LEVER ACTUATED SWITCH
ORDER GUIDE
Catalog
Listing
A
EX-AR128
CW actuation* 15 amp.
SPDT
O.F.
N
oz.
2,22-5,56
8-20
P.T.
max.
mm O.T.
in.
max.
D.T.
max.
mm
in.
5,56
.219
90°
0,18
.007
P.T.
max.
O.T.
min.
D.T.
18°
40°
—
LOW FORCE ROD LEVER ACTUATED SWITCH
ORDER GUIDE
Description
O.F.
max.
N
oz.
Elec.
Rating
Pg. A121
Catalog
Listing
A
EX-AR1613
Furnished without mounting
bracket. CW actuation*
15 amp. SPDT
0,56
2
MANUALLY ACTUATED SWITCH
ORDER GUIDE
Description
Elec.
Rating
Pg. A121
Catalog
Listing
A
EX-AR50
Large 3 x 3.5 inch paddle for fast, easy operation.
15 amp.
SPDT
O.F.
max.
N
lb.
11,1
2.5
OVERTRAVEL PLUNGER ACTUATED SWITCHES
ORDER GUIDE
Description
Elec.
Rating
Pg. A121
Catalog
Listing
O.F.
max.
N
lb.
P.T.
max.
mm
in.
O.T.
min.
mm
in.
D.T.
max.
mm
in.
O.P.**
mm
in.
15 amp.
SPDT
A
EX-Q
13,34
3
1,98
.078
4,78
.188
0,10
.004
47,22
1.859
20 amp.
SPDT
B
EXA-Q
8,90
2
1,27
.050
3,18
.125
0,23
.009
46,02
1.812
15 amp
SPDT
A
EX-Q800
13,34
3
1,98
.078
4,78
.188
0,10
.004
47,22
1.859
10 amps
DPDT
C
EXD-Q-3†
13,34
3
3,96
.156
3,58
.141
1,52
.060
46,02
1.812
With seal boot on plunger.
10 amp. SPDT
D
EX-N15
13,34
3
1,98
.078
4,78
.188
0,10
.004
52,32
2.060
Also UL listed
for Class I,
Group B
(hydrogen)
atmospheres.
* CW (Clockwise) or CCW actuation, when looking at
nameplate.
** Tolerance ± 1,52 in./.060 mm.
† Furnished with 0,91 m (3 ft.) leadwire.
Characteristics: O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel
N J Newtons
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A123
Limit/Enclosed
Description
Elec.
Rating
Pg. A121
Limit and Enclosed Switches
Explosion-Proof Switches
EX Series
Double-conduit
connect switch
EX switches on this page have conduit
openings on each side of the enclosure
which enable through-wiring. This feature
also allows the user to split the wiring of a
double-pole switch, with one-pole exiting
from each side.
The enclosure is larger than EX switches
with one conduit opening and provides additional space for wiring.
NEMA
Double-conduit connect EX switches also
meet the applicable portions of the NEMA
classifications listed on page A121.
ROLLER LEVER ACTUATED SWITCHES
ORDER GUIDE
Description
Elec.
Rating
Pg. A121
Catalog
Listing
O.F.
N
oz.
P.T.
max.
mm
in.
O.T.
max.
D.T.
max.
mm
in.
Two 1⁄2 in. conduit openings.
CW actuation.* 15 amp.
SPDT.
A
1EX1
2,22-5,56
8-20
5,56
.219
90°
0,18
.007
Two 1⁄2 in. conduit openings.
CW actuation.* 20 amp.
SPDT.
B
2EX1
3,61-8,90
13-32
5,56
.219
25°
0,3
.012
Two 3⁄4 in. conduit openings.
CW actuation.* 10 amp.
DPDT.
C
4EX1-3†
2,22-6,67
8-24
6,35
.250
25°
2,77
.109
* CW (clockwise) or CCW actuation, when looking at
nameplate.
N J Newtons
† Furnished with 0,91 m (3 ft.) leadwire.
Characteristics: O.F. — Operating Force; P.T. —
Pretravel; O.T. — Overtravel; D.T. — Differential
Travel.
MOUNTING BRACKETS
15PA85-EX is used for top, bottom, back or
end mounting. It is furnished with each
switch, except where noted in the order
guides.
A124
15PA86-EX is ordered separately for top
mounting of plunger switches. EX switches
may also be direct mounted, using 10-32
UNF screws.
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
Limit and Enclosed Switches
Explosion-Proof Switches
EX Series
REPLACEMENT PARTS
Switch
Listing
Catalog Listing
Replacement Part Numbers
Switching
Unit
Actuator
Springs
Switch
Listing
Catalog Listing
Replacement Part Numbers
Switching
Unit
Actuator
Spring
BZ-2R-P4
6PA5-EX
33PA7-EX
EX-AR128
BZ-2R-P4
6PA130-EX
33-PA7-EX
EX-AR16
BZ-2RW88-P5
6PA5-EX
—
EX-AR1613
BZ-2RW88-P5
6PA136-EX
—
EX-AR20
BZ-2R-P4
33PA7-EX
EX-Q800
BZ-2R-P4
8PA15-EX
—
EX-AR30
BZ-2R-P4
6PA5-EX
33PA5-EX
EXA-Q
BA-2R-P4
8PA15-EX
—
EX-AR50
BZ-2R-P4
6PA134-OP
33PA7-EX
EXD-Q-3
DT-2R-A7
8PA77-EX
—
EX-AR800
BZ-2R-P4
6PA5-EX
33PA7-EX
1EX1
BZ-2R-P4
6PA5-EX
33PA7EX
EX-CR
BZ-2R-P4
6PA131-EX
33PA7-EX
2EX1
BA-2R-P4
6PA5-EX
33PA6-EX
EX-Q
BZ-2R-P4
8PA15-EX
—
4EX1-3
DT-2R4-A7
6PA5-EX
33PA6-EX
EX-N15
BZ-2R15-P4
8PA12-EX
—
EXA-AR
BA-2R-P4
6PA5-EX
33PA6-EX
EXD-AR-3
DT-2R4-A7
6PA5-EX
33PA6-EX
EXH-AR3
4HS202
6PA5-EX
33PA6-EX
EXH-AR33
4HS203
6PA5-EX
33PA5-EX
EXD-AR30-3
DT-2R711-A7
6PA5-EX
33PA5-EX
*
* Actuators for EX-AR20 are shown on page A122.
In addition to the items shown above, the following replaceable
internal levers are available: 33PA1-EX for EX-AR, EX-AR800,
EXA-AR, EXD-AR-3, EXH-AR3, EX-AR20, EX-CR, EX-AR128, 1EX1,
2EX1, and 4EX1-3.
MOUNTING DIMENSIONS (For reference only)
ROLLER LEVER
NO LEVER
CROSS ROLLER LEVER
ONE-WAY ROLLER LEVER
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
A125
Limit/Enclosed
EX-AR
Limit and Enclosed Switches
Explosion-Proof Switches
EX Series
MOUNTING DIMENSIONS (For reference only)
LOW FORCE ROD
MANUAL ACTUATOR
PLUNGER
PLUNGER WITH SEAL BOOT
SWITCHES WITH DOUBLE CONDUIT OPENINGS
ROLLER LEVER
A126
Honeywell 1 Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
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