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. 684-3597
Mfr. Part No.0916606
€15.70
Each
units
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RS Stock No. 768-0906
Mfr. Part No.2800852
€33.07
Each
units
6A 1 TRABTECH - 12.3mm CB TM1 6A M1 P - - - - - - - -
RS Stock No. 684-3591
Mfr. Part No.0916607
€15.70
Each
units
- - - - - - - - - - - - - -
RS Stock No. 855-7359
Mfr. Part No.0912020
€427.03
1 Box of 5
Box(es)
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RS Stock No. 684-3608
Mfr. Part No.0916610
€14.47
Each
units
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RS Stock No. 684-3610
Mfr. Part No.0916612
€17.41
Each
units
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RS Stock No. 170-3786
Mfr. Part No.0712217
€15.842
Each (In a Box of 20)
units
2A 1 - 65 V dc, 250 V ac 8.2mm TCP 2A - - - - - - - -
RS Stock No. 885-6261
Mfr. Part No.3000763
€350.27
1 Box of 6
Box(es)
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RS Stock No. 170-3783
Mfr. Part No.0712194
€16.558
Each (In a Box of 20)
units
1A 1 - 65 V dc, 250 V ac 8.2mm TCP1A - - - - - - - -
RS Stock No. 801-6902
Mfr. Part No.0712217
€16.64
Each
units
2A 1 - 65 V dc, 250 V ac 8.2mm TCP 2A - - - - - - - -
RS Stock No. 801-6892
Mfr. Part No.0712194
€18.21
Each
units
1A 1 - 65 V dc, 250 V ac 8.2mm TCP 1A - - - - - - - -
RS Stock No. 801-6915
Mfr. Part No.0712314
€18.21
Each
units
10A 1 - 65 V dc, 250 V ac 8.2mm TCP 10A - - - - - - - -
RS Stock No. 881-8193
Mfr. Part No.1688476
€6.85
1 Box of 5
Box(es)
- - - - - VS-09-TI-2EMV - - - - - - - -
RS Stock No. 881-8278
Mfr. Part No.1689556
€1,418.83
1 Box of 10000
Box(es)
- - - - - VS-ST-CD-1.0/14.8/0.5-R - - - - - - - -
RS Stock No. 881-8216
Mfr. Part No.1688825
€4.914
Each (In a Box of 10)
units
- - - - - VS-PSC 1.5/5-M - - - - - - - -
New
RS Stock No. 217-6382
Mfr. Part No.2800899
€48.95
Each
units
12A 2 - 80V dc 24.6mm CB TM2 - - - - - - - -
RS Stock No. 881-0448
Mfr. Part No.1658532
€24.39
Each
units
- - - - - VS-SI-FP-2F - - - - - - - -
RS Stock No. 855-7368
Mfr. Part No.0912033
€369.70
1 Box of 5
Box(es)
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RS Stock No. 684-3614
Mfr. Part No.0916613
€16.23
Each
units
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RS Stock No. 881-8196
Mfr. Part No.1688418
€5.096
Each (In a Box of 10)
units
- - - - - VS-09-ST-DSUB-2P - - - - - - - -