Thermal Magnetic Circuit Breakers

Thermal magnetic circuit breakers are devices that provide protection against overcurrent in circuits. Circuit breakers use an automatically operated electrical switch to disrupt the flow of current when an overload or short circuit is detected. Thermal magnetic circuit breakers do this using an electromagnet and bimetallic strips. 


Circuit breakers provide more sophisticated protection against overcurrent than a simple fuse. Fuses simply burn out and have to be replaced, whereas circuit breakers just need to be reset.


How do thermal magnetic circuit breakers work?

In thermal magnetic circuit breakers, there are two ways the flow of current might be detected and disrupted. In the event of a short circuit, the electromagnet rapidly trips the switch. If the overload is smaller, over a longer period of time, the bimetallic strips will instead eventually react to trip the switch. 


What are thermal magnetic circuit breakers used for?

Thermal magnetic circuit breakers are most often used in distribution boards. They make up part of the subsidiary circuits in the broader electrical supply system, protecting against overcurrent.


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Description Price Current Rating Number of Poles Range Voltage Rating Width Series Application Break Time Breaking Capacity at Maximum Voltage Rating Circuit Breaker Type Mounting Hole Diameter Mounting Hole Length Mounting Hole Size Mounting Hole Width
RS Stock No. 885-6264
Mfr. Part No.3000765
$986.67
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 170-3791
Mfr. Part No.0712275
$31.017
Each (In a Box of 20)
units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
RS Stock No. 801-6918
Mfr. Part No.0712275
$30.59
Each
units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
RS Stock No. 885-6252
Mfr. Part No.3000762
$98.66
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 885-6255
Mfr. Part No.3000757
$986.67
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 801-6996
Mfr. Part No.0914138
$165.94
Each
units
5A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
RS Stock No. 885-6268
Mfr. Part No.3000766
$1,526.03
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 801-6892
Mfr. Part No.0712194
$30.59
Each
units
1A 1 - 65 V dc, 250 V ac 8.2mm TCP 1A - - - - - - - -
RS Stock No. 801-7003
Mfr. Part No.0914183
$127.39
Each
units
16A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
RS Stock No. 768-0864
Mfr. Part No.2800841
$64.59
Each
units
6A 1 TRABTECH - 12.3mm CB TM1 6A SFB P - - - - - - - -
RS Stock No. 855-7399
Mfr. Part No.2800913
$71.07
Each
units
- - - - - - - - - - - - - -
New
RS Stock No. 201-5405
Mfr. Part No.2800836
$44.29
Each
units
1A 1 Trabtech 50V dc 12.3mm CB TM1 - - - - - - - -
RS Stock No. 882-2293
Mfr. Part No.0915768
$902.10
1 Box of 6
Box(es)
2A 2 - 65 V dc, 250 V ac 12.5mm TMCP 1 M1 300 2A - - - - - - - -
New
RS Stock No. 201-6425
Mfr. Part No.2800877
$88.56
Each
units
12A 2 Trabtech 80V dc 24.6mm CB TM2 - - - - - - - -
RS Stock No. 885-6258
Mfr. Part No.3000761
$986.67
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
New
RS Stock No. 201-5734
Mfr. Part No.2800882
$88.56
Each
units
3A 2 Trabtech 80V dc 24.6mm CB TM2 - - - - - - - -
RS Stock No. 801-7028
Mfr. Part No.0914439
$145.77
Each
units
1A 1 - 65 V dc, 250 V ac 12.5mm TMC M1 - - - - - - - -
RS Stock No. 881-8206
Mfr. Part No.1688654
$36.82
1 Box of 5
Box(es)
- - - - - VS-08-A-RJ45/LP-2-IP 20 - - - - - - - -
RS Stock No. 855-7352
Mfr. Part No.0911047
$1,137.31
1 Box of 5
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 885-6246
Mfr. Part No.3000756
$986.67
1 Box of 10
Box(es)
- - - - - - - - - - - - - -