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 Price 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 Stock No. 608-8769
Mfr. Part No.GV3ME80
PHP18,837.71
Each
units
- 3 TeSys 690V ac 61mm GV3M - - 100 kA - - - - -
RS Stock No. 272-921
Mfr. Part No.GV3P40
PHP14,402.87
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 272-943
Mfr. Part No.GV3P50
PHP15,028.15
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 272-937
Mfr. Part No.GV3P65
PHP12,935.53
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 312-3645
Mfr. Part No.GB2CB07
PHP1,142.06
Each
units
2A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 312-3825
Mfr. Part No.GB2DB10
PHP2,861.04
Each
units
5A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
RS Stock No. 323-8983
Mfr. Part No.GB2CD05
PHP1,535.84
Each
units
500mA 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
RS Stock No. 323-9021
Mfr. Part No.GB2CD09
PHP2,438.17
Each
units
4A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 3 (ac) kA - - - - -
RS Stock No. 272-909
Mfr. Part No.GV3P25
PHP17,948.56
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 6 kA - - - - -
RS Stock No. 312-3689
Mfr. Part No.GB2CB12
PHP1,959.56
Each
units
6A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 1.5 (ac) kA - - - - -
RS Stock No. 312-3673
Mfr. Part No.GB2CB10
PHP1,109.05
Each
units
5A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
RS Stock No. 312-3718
Mfr. Part No.GB2CB16
PHP1,766.64
Each
units
10A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1.5 kA - - - - -
RS Stock No. 323-9009
Mfr. Part No.GB2CD07
PHP2,274.29
Each
units
2A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 312-3780
Mfr. Part No.GB2DB07
PHP3,878.27
Each
units
2A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 323-9043
Mfr. Part No.GB2CD12
PHP2,438.17
Each
units
6A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 1.5 (ac) kA - - - - -
RS Stock No. 272-836
Mfr. Part No.GV3L40
PHP9,567.19
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 272-892
Mfr. Part No.GV3P18
PHP17,948.56
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 6 kA - - - - -
RS Stock No. 312-3651
Mfr. Part No.GB2CB08
PHP1,109.05
Each
units
3A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 10 (ac) kA - - - - -
RS Stock No. 272-858
Mfr. Part No.GV3L65
PHP10,737.55
Each
units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 312-3796
Mfr. Part No.GB2DB08
PHP2,496.73
Each
units
3A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 10 (ac) kA - - - - -