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.


...
Read more Read less

Filters

Viewing 1 - 20 of 95 products
Results per page
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. 170-3784
Mfr. Part No.0712123
R 419.40
Each (In a Box of 20)
units
250mA 1 - 65 V dc, 250 V ac 8.2mm TCP 0.25A - - - - - - - -
RS stock no. 801-6895
Mfr. Part No.0712123
R 419.40
Each
units
250mA 1 - 65 V dc, 250 V ac 8.2mm TCP 0.25A - - - - - - - -
RS stock no. 881-8272
Mfr. Part No.1689569
R 32,106.12
1 Box of 10000
Box(es)
- - - - - VS-BU-CD-1.0/14.4/0.5-R - - - - - - - -
RS stock no. 881-8203
Mfr. Part No.1688638
R 540.49
1 Box of 5
Box(es)
- - - - - VS-08-T-RJ45/IP 20 - - - - - - - -
RS stock no. 801-6918
Mfr. Part No.0712275
R 419.40
Each
units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
New
RS stock no. 201-5405
Mfr. Part No.2800836
R 555.59
Each
units
1A 1 Trabtech 50V dc 12.3mm CB TM1 - - - - - - - -
RS stock no. 801-6987
Mfr. Part No.0914125
R 2,094.59
Each
units
4A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
RS stock no. 855-7355
Mfr. Part No.0912019
R 11,722.55
1 Box of 5
Box(es)
- - - - - - - - - - - - - -
RS stock no. 881-8238
Mfr. Part No.1688926
R 147.37
Each (In a Box of 10)
units
- - - - - VS-15-BU-DSUB-CD-MG - - - - - - - -
RS stock no. 801-6996
Mfr. Part No.0914138
R 1,635.60
Each
units
5A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
New
RS stock no. 201-5504
Mfr. Part No.2800856
R 555.59
Each
units
16A 1 Trabtech 50V dc 12.3mm CB TM1 - - - - - - - -
RS stock no. 881-8193
Mfr. Part No.1688476
R 667.75
1 Box of 5
Box(es)
- - - - - VS-09-TI-2EMV - - - - - - - -
RS stock no. 855-7399
Mfr. Part No.2800913
R 869.93
Each
units
- - - - - - - - - - - - - -
New
RS stock no. 201-6710
Mfr. Part No.2800900
R 1,107.54
Each
units
16A 2 Trabtech 80V dc 24.6mm CB TM2 - - - - - - - -
RS stock no. 801-7003
Mfr. Part No.0914183
R 1,636.14
Each
units
16A 1 - 65 V dc, 250 V ac 12.5mm TMC 1 - - - - - - - -
RS stock no. 882-2300
Mfr. Part No.0915797
R 9,981.30
1 Box of 6
Box(es)
4A 2 - 65 V dc, 250 V ac 12.5mm TMCP 1 M1 300 4A - - - - - - - -
New
RS stock no. 201-6425
Mfr. Part No.2800877
R 1,107.90
Each
units
12A 2 Trabtech 80V dc 24.6mm CB TM2 - - - - - - - -
RS stock no. 885-6252
Mfr. Part No.3000762
R 949.35
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
RS stock no. 881-8196
Mfr. Part No.1688418
R 86.85
Each (In a Box of 10)
units
- - - - - VS-09-ST-DSUB-2P - - - - - - - -
New
RS stock no. 201-6242
Mfr. Part No.2800838
R 555.77
Each
units
3A 1 Trabtech 50V dc 12.3mm CB TM1 - - - - - - - -