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 Prix 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
N° de stock RS 284-5827
Référence fabricant4400.0009
MarqueSchurter
8,74 €
Each
Unité
2.5A 1 - 240V ac - T11 - - - - - - - -
N° de stock RS 801-6902
Référence fabricant0712217
16,70 €
Each
Unité
2A 1 - 65 V dc, 250 V ac 8.2mm TCP 2A - - - - - - - -
N° de stock RS 409-889
Référence fabricant1610-21-10A
MarqueETA
12,62 €
Each
Unité
10A 1 - 32V dc 20mm 1610 - - - - - - - -
N° de stock RS 869-2764
Référence fabricant4435.0571
MarqueSchurter
10,101 €
Each (In a Pack of 20)
Unité
3A 1 - 32 V dc, 240 V ac - TA35 - - - - - - - -
N° de stock RS 899-3161
Référence fabricant2C5UL
MarqueAltech
50,32 €
Each
Unité
5A 2 - 480Y/277V - UL Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
N° de stock RS 899-4565
Référence fabricant3C16UL
MarqueAltech
66,53 €
Each
Unité
16A 3 - 480Y/277V - UL Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
N° de stock RS 284-5849
Référence fabricant4400.0001
MarqueSchurter
6,11 €
Each
Unité
4A 1 - 240V ac - T11 - - - - - - - -
N° de stock RS 284-6016
Référence fabricant4400.0034
MarqueSchurter
8,74 €
Each
Unité
16A 1 - 240V ac - T11 - - - - - - - -
N° de stock RS 868-9229
Référence fabricant4430.2307
MarqueSchurter
15,609 €
Each (In a Pack of 20)
Unité
5 A, 500 mA 2 - 60 V dc, 240 V ac - TA45 - - - - - - - -
N° de stock RS 323-9015
Référence fabricantGB2CD08
34,70 €
Each
Unité
3A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 3 (ac) kA - - - - -
N° de stock RS 406-9491
Référence fabricant2-5700-IG1-P10-DD-000040-25A
MarqueETA
19,64 €
Each
Unité
25A 1 - - 29mm 2-5700 - - - - - - - -
N° de stock RS 409-750
Référence fabricant1410-L210-L2F1-S02-0.63A
MarqueETA
10,73 €
Each
Unité
630mA 1 - - 33mm 1410-L - - - - - - - -
N° de stock RS 899-1516
Référence fabricant2D40UM
MarqueAltech
35,31 €
Each
Unité
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 - - - -
N° de stock RS 282-8721
Référence fabricant2210-T210-K0M1-H121-0.5A
MarqueETA
39,07 €
Each
Unité
500mA 1 - - 83.5mm 2210 - - - - - - - -
N° de stock RS 881-4756
Référence fabricantAD1-G0-10-A12-1F1-C
57,06 €
Each (In a Pack of 4)
Unité
- 1 - - - A Generators, Marine Applications, Military, Renewable Energy Systems, Telecommunications, Welder Instantaneous 5000 A @ 80 V dc - - 19.1mm 19.05 x 42.16mm 42.2mm
N° de stock RS 885-6264
Référence fabricant3000765
553,58 €
1 Box of 10
Boîte(s)
- - - - - - - - - - - - - -
N° de stock RS 286-3982
Référence fabricant3120-F551-H7T1-W02D-3A
MarqueETA
18,09 €
Each
Unité
3A 2 - - 25mm 3120 - - - - - - - -
N° de stock RS 273-4648
Référence fabricant8340-F410-P1M1-A3H0-15A
MarqueETA
39,77 €
Each
Unité
15A 1 - 80V dc 50.8mm 8340 - - - - - - - -
N° de stock RS 286-4092
Référence fabricant3120-F521-H7T1-W01D-1A
MarqueETA
37,74 €
Each
Unité
1A 2 - - 25mm 3120 - - - - - - - -
N° de stock RS 879-8648
Référence fabricantAA1-B0-34-620-3B1-C
14,91 €
Each
Unité
20A 1 - - - A Generators, Marine Applications, Military, Renewable Energy Systems, Telecommunications, Welder Medium 5000 A @ 80 V dc - 16mm - - -