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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Beskrivning Pris 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-artikelnummer 405-9214
Tillv. art.nr4130-G211-K4M1-35A
VarumärkeETA
278,04 kr
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35A 1 - - 32mm 4130 - - - - - - - -
RS-artikelnummer 782-0911
Tillv. art.nrW28-XQ1A-3
VarumärkeTE Connectivity
29,78 kr
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3A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS-artikelnummer 728-8610
Tillv. art.nr104-PR-4A
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134,33 kr
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4A 1 - - - 104-PR - - - - - - - -
RS-artikelnummer 405-9141
Tillv. art.nr2-5700-IG1-P10-DD-000040-10A
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169,99 kr
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10A 1 - - 29mm 2-5700 - - - - - - - -
RS-artikelnummer 608-8769
Tillv. art.nrGV3ME80
VarumärkeSchneider Electric
2 036,16 kr
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- 3 TeSys 690V ac 61mm GV3M - - 100 kA - - - - -
RS-artikelnummer 728-8617
Tillv. art.nr104-PR-2A
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117,17 kr
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2A 1 - - - 104-PR - - - - - - - -
RS-artikelnummer 312-3796
Tillv. art.nrGB2DB08
VarumärkeSchneider Electric
300,98 kr
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3A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 10 (ac) kA - - - - -
RS-artikelnummer 282-6545
Tillv. art.nr2210-T210-K0M1-H121-5A
VarumärkeETA
381,55 kr
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5A 1 - - 83.5mm 2210 - - - - - - - -
RS-artikelnummer 782-0921
Tillv. art.nrW28-XQ1A-7
VarumärkeTE Connectivity
34,85 kr
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7A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS-artikelnummer 870-1013
Tillv. art.nrTS-701-HT-20
VarumärkeSchurter
29,78 kr
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20A 1 - 50 V dc, 250 V ac - TS-701 - - 1000 A MCB 9.7mm 8.9mm 8.9 x 9.7 (Dia.)mm -
RS-artikelnummer 728-8614
Tillv. art.nr104-PR-6A
VarumärkeETA
117,17 kr
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6A 1 - - - 104-PR - - - - - - - -
RS-artikelnummer 272-921
Tillv. art.nrGV3P40
VarumärkeSchneider Electric
1 518,03 kr
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- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS-artikelnummer 728-8654
Tillv. art.nr106-P10-000040-10A
VarumärkeETA
150,33 kr
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10A 1 - - - 106 - - - - - - - -
RS-artikelnummer 870-1041
Tillv. art.nrTS-709-10
VarumärkeSchurter
15,033 kr
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10A 1 - 32 V dc, 250 V ac - TS-709 - - 1000 A MCB 11.1mm 10.3mm 10.3 x 11.1 (Dia.)mm -
RS-artikelnummer 272-842
Tillv. art.nrGV3L50
VarumärkeSchneider Electric
1 518,03 kr
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- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS-artikelnummer 868-9052
Tillv. art.nr4430.0439
VarumärkeSchurter
10,683 kr
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- 2, 3 - - - TA45 - - - - - - - -
RS-artikelnummer 284-5798
Tillv. art.nr4400.0008
VarumärkeSchurter
81,27 kr
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1A 1 - 240V ac - T11 - - - - - - - -
RS-artikelnummer 409-918
Tillv. art.nr1610-21-25A
VarumärkeETA
121,81 kr
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25A 1 - 32V dc 20mm 1610 - - - - - - - -
RS-artikelnummer 409-867
Tillv. art.nr1610-21-6A
VarumärkeETA
121,50 kr
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6A 1 - 32V dc 20mm 1610 - - - - - - - -
RS-artikelnummer 173-9812
Tillv. art.nr4400.0008
VarumärkeSchurter
51,933 kr
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1A 1 - 240V ac - T11 - - - - - - - -
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