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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Omschrijving Prijs 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-stocknr. 774-0106
FabrikantnummerFC67209
2,40 €
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Aantal stuks
3A 2 - 250V ac 6mm AN - - - - - - - -
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234,01 €
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50A 3 TeSys 690V ac 116mm GV4LE - - 8 kA @ 660 → 690 V ac - - - - -
Nieuw
RS-stocknr. 210-2083
Fabrikantnummer3120-N526-P7T1-W01D-8A-A04010811M
FabrikantETA
49,51 €
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Aantal stuks
8A 2 - 50 V DC, 240 V AC 36.2mm 3120-N - - - - - - - -
Nieuw
RS-stocknr. 210-2113
Fabrikantnummer3120-N554-P7T1-W19DG4-16A
FabrikantETA
27,70 €
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Aantal stuks
16A 5 - 50 V DC, 240 V AC 28mm 3120-N - - - - - - - -
RS-stocknr. 175-1467
FabrikantnummerGV4LE115S6
355,14 €
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Aantal stuks
115A 3 TeSys 690V ac 116mm GV4LE - - 10 kA @ 660 → 690 V ac - - - - -
RS-stocknr. 409-918
Fabrikantnummer1610-21-25A
FabrikantETA
12,87 €
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Aantal stuks
25A 1 - 32V dc 20mm 1610 - - - - - - - -
RS-stocknr. 774-0083
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2,26 €
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Aantal stuks
1.6A 2 - 250V ac 6mm AN - - - - - - - -
RS-stocknr. 899-4622
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FabrikantAltech
66,53 €
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32A 3 - 480Y/277V - UL Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS-stocknr. 782-7846
FabrikantnummerW68-X2Q12-10
FabrikantTE Connectivity
47,72 €
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10A 2 - 277V ac 1.5in W68 - - - - - - - -
RS-stocknr. 774-0011
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5,29 €
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7A - - - 11mm A-0709 - - - - - - - -
RS-stocknr. 782-7925
FabrikantnummerW68-X2Q12-5
FabrikantTE Connectivity
59,64 €
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Aantal stuks
5A 2 - 277V ac 1.5in W68 - - - - - - - -
RS-stocknr. 272-842
FabrikantnummerGV3L50
184,02 €
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Aantal stuks
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS-stocknr. 188-4739
FabrikantnummerGV3L80
319,00 €
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Aantal stuks
80A 3 TeSys 690V ac 136mm GV3L - - 6 kA @ 690 V ac - - - - -
RS-stocknr. 409-895
Fabrikantnummer1610-21-15A
FabrikantETA
12,87 €
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Aantal stuks
15A 1 - 32V dc 20mm 1610 - - - - - - - -
RS-stocknr. 175-1501
FabrikantnummerGV4P12N
313,38 €
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Aantal stuks
12.5A 3 TeSys 690V ac 165mm GV4P - - 8 kA @ 660 → 690 V ac - - - - -
RS-stocknr. 899-3613
Fabrikantnummer2ZU13
FabrikantAltech
51,15 €
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13A 2 - - - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Components which Fail-Short, Components/Devices with Low Surge Current and Short Circuit Withstand Capabilities, Semiconductors, UL508 Application Time Delay 10 kA MCCB - - - -
RS-stocknr. 272-814
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141,96 €
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Aantal stuks
- 3 TeSys 690V ac 55mm GV3 - - 6 kA - - - - -
RS-stocknr. 201-6352
Fabrikantnummer2800875
FabrikantPhoenix Contact
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8A 2 Trabtech 80V dc 24.6mm CB TM2 - - - - - - - -
RS-stocknr. 212-2269
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Aantal stuks
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