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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รายละเอียดสินค้า / Description ราคา / 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. 801-6909
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712259
THB559.68
Each
Units
4A 1 - 65 V dc, 250 V ac 8.2mm TCP 4A - - - - - - - -
RS Stock No. 170-3786
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712217
THB511.03
Each (In a Box of 20)
Units
2A 1 - 65 V dc, 250 V ac 8.2mm TCP 2A - - - - - - - -
RS Stock No. 881-5024
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MF1-B-32-410-1-BB2-B-C
THB611.83
Each
Units
1A 1 - - - M Automotive, Communication Equipment, Generators, Marine Applications, Medical Equipment, Power Supplies Short 600 A @ 80 V dc MCB - 18mm 18.03 x 37.08mm 37.1mm
RS Stock No. 729-2859
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3600-P10-Si-15A
Brand :ETA
THB2,232.01
Each
Units
15A 1 - - 11.5mm 3600 - - - - - - - -
RS Stock No. 782-0909
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W28-XQ1A-2
THB121.79
Each
Units
2A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS Stock No. 272-937
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV3P65
THB7,547.37
Each
Units
- 3 TeSys 690V ac 55mm GV3 - - 5 kA - - - - -
RS Stock No. 782-7984
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W58-XB1A4A-20
THB177.07
Each
Units
20A 1 - 50 V dc, 250 V ac 0.66in W58 - - - - - - - -
RS Stock No. 312-3825
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2DB10
THB1,669.30
Each
Units
5A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
RS Stock No. 729-2805
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3130-F130-P7T1-W02Q-1A
Brand :ETA
THB1,604.03
Each
Units
1A 3 - - - 3130 - - - - - - - -
RS Stock No. 409-902
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1610-21-20A
Brand :ETA
THB229.68
Each
Units
20A 1 - 32V dc 20mm 1610 - - - - - - - -
RS Stock No. 782-7919
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W92-X112-50
THB1,608.09
Each
Units
50A 2 - 277V ac 1.5in W92 - - - - - - - -
RS Stock No. 868-9137
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4430.1328
Brand :Schurter
THB774.35
Each
Units
15A 2 - 60 V dc, 240 V ac - T45-2R Industrial Appliances, Power Supplies, Power Tools - 1 kA MCB - - - -
RS Stock No. 282-8721
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2210-T210-K0M1-H121-0.5A
Brand :ETA
THB1,437.39
Each
Units
500mA 1 - - 83.5mm 2210 - - - - - - - -
RS Stock No. 312-3673
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB10
THB647.08
Each
Units
5A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
RS Stock No. 170-3791
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712275
THB510.71
Each (In a Box of 20)
Units
6A 1 - 65 V dc, 250 V ac 8.2mm TCP 6A - - - - - - - -
RS Stock No. 801-6892
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712194
THB559.68
Each
Units
1A 1 - 65 V dc, 250 V ac 8.2mm TCP 1A - - - - - - - -
RS Stock No. 898-1657
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1DU1R
Brand :Altech
THB396.27
Each
Units
1A 1 - - - R Appliance Circuit, Control Transformers, Power Supplies, Power Supplies and Reactive Loads, Sensitive Electronics, UL1077 Application Time Delay 10 kA MCCB - - - -
RS Stock No. 323-9009
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CD07
THB1,370.07
Each
Units
2A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 170-3783
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712194
THB510.71
Each (In a Box of 20)
Units
1A 1 - 65 V dc, 250 V ac 8.2mm TCP1A - - - - - - - -
RS Stock No. 801-6898
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0712152
THB559.68
Each
Units
500mA 1 - 65 V dc, 250 V ac 8.2mm TCP 0.5A - - - - - - - -
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