ETC2 B11 Thermal cutout temperature protection for coils/winding Datasheet

Thermal Cutout
Temperature Protection for Coils/Windings
FEATURES
– broad product range for all types of application
and load
– small size
– maximum switch load
– good heat transfer
– high temperature sensitivity
– minimal contact resistance
– many approvals
F Type
B Type
DESCRIPTION
This thermostat operates as a thermal cutout. A thermally sensitive
bimetal snap-element with double contacts (single contacts for type F 11)
either opens or closes an electrical circuit by switching at a pre-set response temperature. Reset follows automatically after a considerable drop
in temperature.
Heat transfer occurs from all sides through convection, radiation or conduction in gaseous or solid media. The circular base plate conducts heat
onto the bimetal snap-element, thus also allowing its use as a surface
temperature cutout.
APPLICATIONS
Thermal protection and- under certain conditions - temperature control of
electrical machinery and equipment.
Examples
Single phase motors
Generators
Convertors
Transformers
Pumps
Heating elements
Signal transmitters
Fire detectors
Magnets
Relays
Chokes
Coils
Power supplies
Inverters
DIMENSIONS
03-04-01
1000-Y132
F 11
B 11/B 12
CANTHERM
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel: (514) 739-3274 • 1-800-561-7207 • Fax: (514) 739-290
E-mail : [email protected] • Website: www.cantherm.com
Microtherm International Cooperation
TECHNICAL DATA
F 11
F 11U
B 11
B 12
Voltage rating 50 – 60 Hz*
Type
250 V
250 V
250 V
250 V
Current rating at cos j = 1,0*
Current rating at cos j = 0,6*
2,0 A
1,2 A
2,0 A
1,2 A
6,3 A
4,0 A
6,3 A
4,0 A
max. load 48 h**
at cos j = 1.0
3,0 A
4,0 A
8,0 A
10,0 A
E I (10 000)
E I (10 000) 35 E2 (3500)
E I (10 000)
E I (10 000)
Normally closed N-C
Contact
arrangement Normally open N-O
Switch operations at rated current*
Contact resistance***
Response temperature range
Tolerance (minimum)
Max. permanent temperature of
switch mechanism*
Housing material
< 40 m½
< 40 m½
< 40 m½
< 40 m½
+70 °C to
+160 °C
343 K to 433 K
+70 °C to
+160 °C
343 K to 433 K
+50 °C to
+160 °C
323 K to 433 K
+50 °C to
+160 °C
323 K to 433 K
±5 K ±10 K ±15 K
±5 K ±10 K ±15 K
±5 K ±10 K ±15 K
±5 K ±10 K ±15 K
T 175
T 175
T175
T 175
silver-plated steel
hard epoxy
silver-plated steel
hard epoxy
nickel-plated steel
Duroplast
nickel-plated steel
Duroplast
Protection
Strength of shape without
permanent deformation
Vacuum tightness Æ
Rate of leak
sealed against ingress of dust,
lacquer, oil, resin etc.
800 N/mm2
800 N/mm2
900 N/mm2
900 N/mm2
standard
Ref. P102
0.133–0.0133
bar cm3/s
standard
Ref. P102
0.133–0.0133
bar cm3/s
standard
Ref. P102
0.133–0.0133
bar cm3/s
standard
Ref. P102
0.133–0.0133
bar cm3/s
Standard
P301
P302
P303
P304
Insulation resistance/
dielectric strength
Execution according to U
Overheat protector ÜHS
10,0 (1,2) A
16,0 (8,0) A
Short circuit proof
10,0 A
10,0 A
36,0 A
36,0 A
Max. load 500 V AC
110 V AC
60 V DC
42 V DC
6/12/ 24 V DC
0.8
6.0
1.0
1.2
1.8
0.8
6.0
1.0
1.2
1.8
2.0
12.0
3.0
4.2
5.5
2.0
12.0
3.0
4.2
5.5
Min. load
A
A
A
A
A
50 m A
Note: *** Approved ratings- other specific values on request.
*** Cycling rate 72/h
A
A
A
A
A
50 m A
.
A
A
A
A
A
50 m A
A
A
A
A
A
50 m A
*** Contact resistance in standard version.
Æ On request.
RESPONSE TEMPERATURES, TOLERANCE
Temperature stepped in 5 °C intervals, and tolerance in K from 50 °C to 160 °C. Special switch-off and
reset temperatures available on request.
Rate of temperature rise from 0.1 K/min. to max. 1.0
K/min.
Insulation of the housing will slow down the cutout’s
response.
Standard reset temperature between 5 K and 50 K,
depending on response temperature.
CURRENT SENSITIVITY
The thermostats are not current sensitive at rated
currents. At loads above the rated values, upto
maximum loading there is self-heating of the current-carrying contacts. If current sensitive cutouts
are required, please refer to the data sheet „Thermal
cutouts – current sensitive thermal protection for
coils/windings (Nr. 395).
INSULATION RESISTANCE
Housing (with insulation)
to earth
2750Veff. AC P 302
On request, in special housing,
upto
4000Veff. AC P 304
Across open contacts, dependent
on response temperature
500Veff. AC P304
Voltage of coil depending on application,
please ask.
03-04-01
1000-Y132
1250 V 50–60 Hz
2000 V 50–60 Hz
2750 V 50–60 Hz
3750 V 50–60 Hz
4000 V 50–60 Hz
QUALITY ASSURANCE
Production item testing
Voltage test, switch function
Nominal switching temperature
Random sample quality testing
Life expectancy to VDE 0631/EN 60730
Function test to AQL 1.0
Nominal response temperature AQL 1.0
Measurement tolerance ±2 °C AQL 4.0
Other values AQL 4.0
CONNECTIONS
Flexible leads or solid wire in different lengths and
cross-sections are available – please ask.
2
CONNECTIONS (Standard)
Lead length
standard
Code
Temperature
Class
(VDE)
Cross section
Coating/
Insulation
Conductor
Colour
F 11
100–20 mm
L510
L517
L515
B
F
C
0.25 mm2
0.25 mm2
0.24 mm2
Textil/Lack
Polyolefine
PTFE
tinned copper
tinned copper
silvered copper
black
blue
white
B 11/
B 12
100–20 mm
L520
L531
L528
L540
B
F
H
C
0.5
0.5
0.5
0.62
Textil/Lack
Polyolefine
FEP
PTFE
tinned copper
tinned copper
tinned copper
silvered copper
yellow
blue
white
white
mm2
mm2
mm2
mm2
The temperature resistance of the connecting leads
allows for the nominal response temperature of the
cutout.
Lead stripping: standard 6 ± 1 mm
a = ends stripped
b = half insulated
c = stripped and lead end tinned
The leads used are consistent with insulation class
and dielectric strength stated.
INSULATION
Standard versions of the thermostats are un-insulated.
If insulation is desired, the standard insulation
(class) should be selected for the appropriate response temperature or max. operating temperature.
Type
Example:
Version
U18 5 ( F11 )
U 102
F 11
U 104
F 11
U 106
F 11
U 116
F 11
U 112
UWF coating
hard epoxy
F
F 11
U 185
Standard
Insulation cap ST
B
F 11
U 180
Insulation cap PET
H
B 11/B 12 U 103
B 11/B 12 U 105
U 109
B 11/B 12 U 107
U10 5 ( B11 / B12 )
3
Standard
SHB transparent shrink
material
SSB radiation cross-linked
heat-shrink sleeve
black for normally closed
red for normally open
SSH radiation cross-linked
heat-shrink sleeve
transparent
B
B
F
H
B
B
F
B 11/B 12 U 139
shrink sleeve PTFE
H
B 11/B 12 U 112
UWF coating
hard epoxy
F
U112 ( B11 / B1 2 )
U18 6 ( B11 / B1 2 )
Standard
SHB transparent shrink
material
SSB radiation cross-linked
heat-shrink sleeve
black for normally closed
SSH radiation cross-linked
heat-shrink sleeve
transparent
Standard
shrink sleeve PTFE
Insulation
Class (VDE)
F 11
U10 2 ( F11 )
U112 ( F11 )
Description
B 11/B 12 U 186
Standard
Insulation cap ST
B
B 11/B 12 U 181
Insulation cap PET
H
03-04-01
1000-Y132
Type
SPECIAL VERSIONS
INSULATION
Special versions are available, please ask.
MOUNTINGS
Single screw fixing bracket (CuBe) for use on flat
surfaces with full insulation or cap.
INSTALLATION TIPS
When installing thermal cutouts, it is important to
ensure good heat transfer. The heat sensitive surface (base) should be placed on/near to the heat source. Heat conducting paste or paint will improve heat
transfer.
It should be noted that standard version thermal cutouts have a current-carrying housing, and that with
electrically insulated cutouts the impaired heat
transfer can alter the effective switching temperature. This should be borne in mind when selecting the
nominal response temperature.
With single-phase motors, the cutout should switch
the mains supply. It will then switch the motor off if
there is any undesirable heating. The motor short
circuit current will then be safely interrupted, if this is
larger than the current rating of the cutout.
For three-phase motors, the motor current will not be
interrupted direct from the mains supply. The cutout
installed in the windings should switch in series with
the magnetic coil of the contactor. The electrical
supply to the cutouts should lead either singly or
together from the motor terminals so that connection
with the control circuit is possible.
PRODUCT MARKING
Example:
B12V Type, version
12510 Nominal response temperature
(3 digits),
Tolerance ± in K (2 digits)
074E Month (2 digits), Year (1 digit),
Country code
MARKING
Normally closed = blue epoxy, Code No. 2
Normally open = red epoxy, Code No. 1
Special markings on request.
ORDERING EXAMPLE
APPROVALS
Life expectancy, voltage rating,
current rating to VDE 0631 or EN 60730,
see page 2.
Additional approvals apply for many countries.
Information on request.
CANTHERM
Quantity
Type
Temperature
Version
800
B 12
125 °C ±10 K
U 103
We reserve the right to change specifications without prior notice.
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel: (514) 739-3274 • 1-800-561-7207 • Fax: (514) 739-290
E-mail : [email protected] • Website: www.cantherm.com
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