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. 881-0401
Mfr. Part No.1656660
MYR23.03
Each
units
- - - - - VS-SI-BZ - - - - - - - -
RS Stock No. 801-6898
Mfr. Part No.0712152
MYR68.32
Each
units
500mA 1 - 65 V dc, 250 V ac 8.2mm TCP 0.5A - - - - - - - -
RS Stock No. 170-3791
Mfr. Part No.0712275
MYR65.69
Each (In a Box of 20)
units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
RS Stock No. 170-3785
Mfr. Part No.0712152
MYR65.69
Each (In a Box of 20)
units
500mA 1 - 65 V dc, 250 V ac 8.2mm TCP 0.5A - - - - - - - -
RS Stock No. 801-6918
Mfr. Part No.0712275
MYR71.98
Each
units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
RS Stock No. 768-0937
Mfr. Part No.2800862
MYR244.14
Each
units
5A 1 TRABTECH - 12.3mm CB TM1 5A F1 P - - - - - - - -
RS Stock No. 170-3789
Mfr. Part No.0712291
MYR65.69
Each (In a Box of 20)
units
8A 1 - 65 V dc, 250 V ac 8.2mm TCP 8A - - - - - - - -
RS Stock No. 881-8278
Mfr. Part No.1689556
MYR5,360.00
1 Box of 10000
Box(es)
- - - - - VS-ST-CD-1.0/14.8/0.5-R - - - - - - - -
RS Stock No. 768-1101
Mfr. Part No.2800916
MYR207.48
Each
units
2A 1 TRABTECH - 12.3mm CB E1 24DC/2A P - - - - - - - -
RS Stock No. 881-8206
Mfr. Part No.1688654
MYR79.35
1 Box of 5
Box(es)
- - - - - VS-08-A-RJ45/LP-2-IP 20 - - - - - - - -
RS Stock No. 881-8247
Mfr. Part No.1688939
MYR120.20
1 Box of 10
Box(es)
- - - - - VS-15-ST-DSUB-CD-OG - - - - - - - -
RS Stock No. 882-2322
Mfr. Part No.0915852
MYR1,461.15
1 Box of 6
Box(es)
- - - - - - - - - - - - - -
RS Stock No. 801-7003
Mfr. Part No.0914183
MYR351.33
Each
units
16A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
RS Stock No. 801-6909
Mfr. Part No.0712259
MYR70.54
Each
units
4A 1 - 65 V dc, 250 V ac 8.2mm TCP 4A - - - - - - - -
RS Stock No. 881-8238
Mfr. Part No.1688926
MYR350.10
1 Box of 10
Box(es)
- - - - - VS-15-BU-DSUB-CD-MG - - - - - - - -
RS Stock No. 881-8199
Mfr. Part No.1688421
MYR195.50
1 Box of 10
Box(es)
- - - - - VS-09-BU-DSUB-2P - - - - - - - -
RS Stock No. 801-7028
Mfr. Part No.0914439
MYR351.33
Each
units
1A 1 - 65 V dc, 250 V ac 12.5mm TMC M1 - - - - - - - -
RS Stock No. 881-0372
Mfr. Part No.1656657
MYR45.81
Each
units
- - - - - VS-SI-FP-BP - - - - - - - -
RS Stock No. 170-3787
Mfr. Part No.0712259
MYR65.73
Each (In a Box of 20)
units
4A 1 - 65 V dc, 250 V ac 8.2mm TCP 4A - - - - - - - -
RS Stock No. 881-0439
Mfr. Part No.1657753
MYR297.06
Each
units
3A - - 125V - VS-SI-FP-2DSUB25-GC-BU/ST - - - - - - - -