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. 312-3623
FabrikantnummerGB2CB05
18,41 €
Each
Aantal stuks
500mA 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
RS-stocknr. 286-4187
Fabrikantnummer3120-F32F-H7T1-SGRX-2.5A
FabrikantETA
27,51 €
Each
Aantal stuks
2.5A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 729-2723
Fabrikantnummer1410-G111-P2F1-S01-10A
FabrikantETA
11,03 €
Each
Aantal stuks
10A 1 - - - 1410-G1 - - - - - - - -
RS-stocknr. 728-8682
Fabrikantnummer1140-F111-P1M1-12A
FabrikantETA
11,50 €
Each
Aantal stuks
12A 1 - - - 1140-F - - - - - - - -
RS-stocknr. 899-1516
Fabrikantnummer2D40UM
FabrikantAltech
35,31 €
Each
Aantal stuks
40A 2 - - - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers, UL508 Application Time Delay 10 kA MCCB - - - -
RS-stocknr. 899-1487
Fabrikantnummer2D30UL
FabrikantAltech
44,36 €
Each
Aantal stuks
30A 2 - 480Y/277V - UL Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers Time Delay 10 kA MCCB - - - -
RS-stocknr. 284-6000
Fabrikantnummer4400.0031
FabrikantSchurter
8,74 €
Each
Aantal stuks
12A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 899-4720
Fabrikantnummer3CU10L
FabrikantAltech
61,42 €
Each
Aantal stuks
10A 3 - - - L Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS-stocknr. 899-3351
Fabrikantnummer2CU6R
FabrikantAltech
20,43 €
Each
Aantal stuks
6A 2 - 480Y/277V - R Appliance Circuit, Appliances, Business Equipment, Control Circuit Application, Lighting, Power Supplies, Sensitive Electronics, UL1077 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS-stocknr. 774-0102
FabrikantnummerFC67208
2,26 €
Each
Aantal stuks
2.7A 2 - 250V ac 6mm AN - - - - - - - -
RS-stocknr. 312-3702
FabrikantnummerGB2CB14
18,41 €
Each
Aantal stuks
8A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 1.5 (ac) kA - - - - -
RS-stocknr. 173-9839
Fabrikantnummer4400.0002
FabrikantSchurter
5,023 €
Each (In a Box of 100)
Aantal stuks
2A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 284-5849
Fabrikantnummer4400.0001
FabrikantSchurter
6,11 €
Each
Aantal stuks
4A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 868-9229
Fabrikantnummer4430.2307
FabrikantSchurter
15,609 €
Each (In a Pack of 20)
Aantal stuks
5 A, 500 mA 2 - 60 V dc, 240 V ac - TA45 - - - - - - - -
RS-stocknr. 405-9135
Fabrikantnummer2-5700-IG1-P10-DD-000040-7A
FabrikantETA
19,73 €
Each
Aantal stuks
7A 1 - - 29mm 2-5700 - - - - - - - -
RS-stocknr. 899-4981
Fabrikantnummer3D32UM
FabrikantAltech
46,06 €
Each
Aantal stuks
32A 3 - 480Y/277V - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers, UL508 Application Time Delay 10 kA MCCB - - - -
RS-stocknr. 881-1344
FabrikantnummerEA4-X0-03-204-52E-GB
237,76 €
Each
Aantal stuks
100A 4 - - - E Generators, Ideal for Higher Current and Voltage Applications, Industrial Appliances, Military, Renewable Energy Systems - 5000 A @ 125 V dc, 5000 A @ 240 Vac MCCB - 106.3mm 106.3 x 69.85mm 69.9mm
RS-stocknr. 286-4020
Fabrikantnummer3120-F551-H7T1-W02D-20A
FabrikantETA
27,05 €
Each
Aantal stuks
20A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 335-980
Fabrikantnummer106-P30-000040-3A
FabrikantETA
8,49 €
Each
Aantal stuks
3A 1 - - 19mm 106-P30 - - - - - - - -
RS-stocknr. 885-6264
Fabrikantnummer3000765
FabrikantPhoenix Contact
553,58 €
1 Box of 10
Box(es)
- - - - - - - - - - - - - -
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