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Current
Sensitive Thermal Protection For Coils / Windings
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T 10, T 11, T 20, T 21 >
Online Tech Info
These thermal cutouts operate by means
of a thermally sensitive bimetal snap-element which
switches a double electrical contact when reaching
a pre-set response temperature. They can be normally
open or normally closed. The electrical current being
switched flows through the bimetal element, which
therefore gives a combination of temperature and current
- sensitivity.
(T
10, T 11, T 20, T 21)
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PDF Tech Info, Schematics and More
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| Applications
Single Phase Motors,
Generators, Convertors, Transformers, Pumps, Heating
Elements, Signal Transmitters, Fire Detectors, Magnets,
Relays, Chokes, Coils, Power Supplies, Inverters |
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Technical Data |
| |
T
10 |
T
11 |
T
20 |
T
21 |
| Nominal
voltage* 50–60 Hz |
250
V |
250
V |
250
V |
250
V |
Current
rating at cos 
= 1.0* |
2.5
A |
2.5
A |
10.0
A |
16.0
A |
Current
rating at cos
= 0.6* |
1.6
A |
1.6
A |
6.3
A |
10.0
A |
Max. load
at cos
= 1.0 |
3.8
A |
3.8
A |
13.0
A |
13.0
A |
| 500
V 50 – 60 Hz
380 V 50 – 60 Hz
250 V 50 – 60 Hz
110 V 50 – 60 Hz
60 V DC
42 V DC
6, 12, 24 V DC
min. load 50 m A |
3.5
A
4.0 A
6.3 A
10.0 A.
1.0 A
1.2 A
1.5 A |
3.5
A
4.0 A
6.3 A
10.0 A
1.0 A
1.2 A
1.5 A |
16.0 A
20.0 A
2.5 A
4.8 A
6.3 A
|
20.0 A
25.0 A
6.3 A
8.0 A
10.0 A
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| Contact
arrangement |
|
|
|
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| Switch
operations
at rated current |
EI
(10.000) |
EI
(10.000) |
1E3
(1.000) |
02E2
(200) |
| Standard
contact resistance** |
</=
40 m |
</=
40 m |
</=
40 m |
</=
40 m |
| Standard
response temperature range
stepped in 5 °C intervals |
+50
°C to +180 °C |
+50
°C to +180 °C |
+50
°C to +160 °C |
+50
°C to +160 °C |
| Standard
tolerance |
±3
K ±5 K ±10 K |
±5
K ±10 K ±15 K |
±2.5
K ±5 K ±10 K |
±5
K ±10 K ±15 K |
| Max.
permanent temperature
(standard)
of switch mechanism* |
T
180 |
T
180 |
T
180 |
T
180 |
| Standard
temperature rating of connecting leads by insulation
class and epoxy sealant
(to VDE 0530) |
A.
E. B. F. H
200 °C max. 10 h
230 °C max. 5 h |
A.
E. B. F. H
200 °C max. 10 h
230 °C max. 5 h |
A.
E. B. F.
200 °C max. 10 h
230 °C max. 5 h |
A.
E. B. F
200 °C max. 10 h
230 °C max. 5 h |
Vacuum tightness
Leak rate |
standard.
ref. P 102
0.133 to 0.0133
bar cm3/sec |
standard.
ref. P 102
0.133 to 0.0133
bar cm3/sec |
standard.
ref. P 102
0.133 to 0.0133
bar cm3/sec |
standard.
ref. P 102
0.133 to 0.0133
bar cm3/sec |
| Housing
material
Coating material |
Copper/Beryllium,
Teflon PTFE |
stainless
steel,
Hard epoxy |
rolled
bronze,
Hard epoxy |
stainless
steel,
Hard epoxy |
| Housing
Insulation options |
SHB,
SSB, SSH,
UWF, PTFE, SKH, GSS |
SHB,
SSB, SSH,
UWF, PTFE, SKH,. GSS |
HHB,
SHB, SSB,
SSH, UWF, VIB |
HHB,
SHB, SSB,
SSH, UWF, VIB |
| Cross-section
of
the connecting leads standard version |
0.25
mm2 |
0.50
mm2 |
0.50
mm2 |
0.75
mm2 |
| Insulation
resistance
Dielectric strength |
Standard
1250 V 50–60 Hz
P301 2000 V 50–60 Hz
P302 2750 V 50–60 Hz
P303 3750 V 50–60 Hz
P304 4000 V 50–60 Hz
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| |
T
10 |
T
11 |
T
20 |
T
21 |
| |
*
Approved ratings. Further specific values on request,
(U, V, B). g Cycle rate 72/h.
** Contact resistance without connections, e. g. leads,
wire or terminals.
* The thermostats can be produced with a specific
production mark
* (e. g. letter V, U, B). L.S.C.T. 200 A 1/2 hp UL
547. |
Thermal
Cutouts
8415
Mountain
Sights Avenue, Montreal (Quebec), H4P 2B8 Canada
