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. 284-5855
Fabrikantnummer4400.005
FabrikantSchurter
€ 6,78
Each
Aantal stuks
6A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 739-6888
Fabrikantnummer3120-F521-H7T1-W01D-20A-U0000M
FabrikantETA
€ 59,37
Each
Aantal stuks
20A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 899-2929
Fabrikantnummer2BU05R
FabrikantAltech
€ 26,78
Each
Aantal stuks
500mA 2 - 480Y/277V - R Appliance Circuit, Appliances, Business Equipment, Control Circuits and Some Electronic Applications, Lighting, Power Supplies, Sensitive Electronics, UL1077 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS-stocknr. 782-6571
FabrikantnummerW28-XQ1A-16
FabrikantTE Connectivity
€ 3,07
Each
Aantal stuks
16A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS-stocknr. 335-996
Fabrikantnummer106-P30-000040-2A
FabrikantETA
€ 10,86
Each
Aantal stuks
2A 1 - - 19mm 106-P30 - - - - - - - -
RS-stocknr. 173-9827
Fabrikantnummer4400.005
FabrikantSchurter
€ 6,166
Each (In a Box of 100)
Aantal stuks
6 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 272-937
FabrikantnummerGV3P65
€ 204,02
Each
Aantal stuks
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS-stocknr. 729-2782
Fabrikantnummer3120-F554-P7T1-W02D-16A
FabrikantETA
€ 27,48
Each
Aantal stuks
16A 2 - - - 3120-F - - - - - - - -
RS-stocknr. 272-921
FabrikantnummerGV3P40
€ 171,70
Each
Aantal stuks
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS-stocknr. 405-9141
Fabrikantnummer2-5700-IG1-P10-DD-000040-10A
FabrikantETA
€ 16,44
Each
Aantal stuks
10A 1 - - 29mm 2-5700 - - - - - - - -
RS-stocknr. 312-3645
FabrikantnummerGB2CB07
€ 19,00
Each
Aantal stuks
2A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS-stocknr. 286-4143
Fabrikantnummer3120-F521-H7T1-W01D-12A
FabrikantETA
€ 29,40
Each
Aantal stuks
12A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 712-7641
Fabrikantnummer3120-F551-H7T1-W14DR4-10A
FabrikantETA
€ 26,71
Each
Aantal stuks
10A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 273-0860
Fabrikantnummer1658-G21-02-P10-10A
FabrikantETA
€ 8,96
Each
Aantal stuks
10A 1 - - 32mm 1658 - - - - - - - -
RS-stocknr. 879-8639
FabrikantnummerAA1-B0-34-615-3B1-C
€ 14,46
Each
Aantal stuks
15A 1 - - - A Generators, Marine Applications, Military, Renewable Energy Systems, Telecommunications, Welder Medium 5000 A @ 80 V dc - 16mm - - -
RS-stocknr. 273-4597
Fabrikantnummer8340-F410-P1M1-A3H0-1A
FabrikantETA
€ 35,72
Each
Aantal stuks
1A 1 - 80V dc 50.8mm 8340 - - - - - - - -
RS-stocknr. 335-980
Fabrikantnummer106-P30-000040-3A
FabrikantETA
€ 10,51
Each
Aantal stuks
3A 1 - - 19mm 106-P30 - - - - - - - -
RS-stocknr. 344-5333
Fabrikantnummer1658-G21-02-P10-16A
FabrikantETA
€ 8,96
Each
Aantal stuks
16A 1 - - 32mm 1658 - - - - - - - -
RS-stocknr. 782-6597
FabrikantnummerW28-XQ1A-4
FabrikantTE Connectivity
€ 2,98
Each
Aantal stuks
4A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS-stocknr. 782-7833
FabrikantnummerW67-X2Q12-10
FabrikantTE Connectivity
€ 18,91
Each
Aantal stuks
10A 1 - 277V ac 0.75in W67 - - - - - - - -
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