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 273-0882
Référence fabricant1658-G21-02-P10-15A
MarqueETA
7,17 €
Each
Unité
15A 1 - - 32mm 1658 - - - - - - - -
N° de stock RS 312-3718
Référence fabricantGB2CB16
18,41 €
Each
Unité
10A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1.5 kA - - - - -
N° de stock RS 782-7922
Référence fabricantW57-XB1A7A10-15
3,58 €
Each
Unité
15A 1 - 250V ac 0.575in W57 - - - - - - - -
N° de stock RS 312-3780
Référence fabricantGB2DB07
36,73 €
Each
Unité
2A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
N° de stock RS 868-8778
Référence fabricant4400.0010
MarqueSchurter
8,51 €
Each
Unité
3A 1 - 48 V dc, 240 V ac - T11-211 Household Appliances, Industrial Appliances, Power Supplies and Chargers, Power Tools - 2 kA MCB - - - -
N° de stock RS 312-3825
Référence fabricantGB2DB10
36,73 €
Each
Unité
5A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
N° de stock RS 868-8831
Référence fabricant4404.0021
MarqueSchurter
1,862 €
Each (In a Pack of 100)
Unité
8A 1 - - - T9-311 Household Appliances, HVAC, Industrial Appliances, Medical, Power Supplies, Power Tools, Uninterruptible Power Supply - 2 kA MCB 9.6mm 8.9mm 8.9 x 9.6 (Dia.)mm -
N° de stock RS 782-6569
Référence fabricantW33-T4B1Q-10
30,71 €
Each
Unité
10A 2 - 120V 21.59mm W33 - - - - - - - -
N° de stock RS 728-8686
Référence fabricant1140-F111-P1M1-16A
MarqueETA
11,50 €
Each
Unité
16A 1 - - - 1140-F - - - - - - - -
N° de stock RS 830-3060
Référence fabricantGV3P32
166,16 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 782-0889
Référence fabricantW23-X1A1G-3
40,87 €
Each
Unité
3A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
N° de stock RS 312-3651
Référence fabricantGB2CB08
18,41 €
Each
Unité
3A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 10 (ac) kA - - - - -
N° de stock RS 899-1620
Référence fabricant2DU1L
MarqueAltech
40,94 €
Each
Unité
1A 2 - - - L Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformer, UL489 Applications Time Delay 10 kA MCCB - - - -
N° de stock RS 899-3262
Référence fabricant2CU1L
MarqueAltech
46,27 €
Each
Unité
1A 2 - - - L Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
N° de stock RS 409-867
Référence fabricant1610-21-6A
MarqueETA
12,62 €
Each
Unité
6A 1 - 32V dc 20mm 1610 - - - - - - - -
N° de stock RS 405-9141
Référence fabricant2-5700-IG1-P10-DD-000040-10A
MarqueETA
19,73 €
Each
Unité
10A 1 - - 29mm 2-5700 - - - - - - - -
N° de stock RS 312-3645
Référence fabricantGB2CB07
18,41 €
Each
Unité
2A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
N° de stock RS 312-3639
Référence fabricantGB2CB06
18,41 €
Each
Unité
1A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
N° de stock RS 728-8617
Référence fabricant104-PR-2A
MarqueETA
11,81 €
Each
Unité
2A 1 - - - 104-PR - - - - - - - -
N° de stock RS 899-1724
Référence fabricant2DU6R
MarqueAltech
20,47 €
Each
Unité
6A 2 - 480Y/277V - R Appliance Circuit, Control Transformers, Power Supplies, Power Supplies and Reactive Loads, Sensitive Electronics, UL1077 Application Time Delay 10 kA MCCB - - - -