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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กำลังดูสินค้า 61 - 80 รายการจาก 2054 รายการ / Viewing 61 - 80 of 2054 products
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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. 782-0867
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W57-XB7A4A10-10
THB52.47
Each
Units
10A 1 - 250V ac 0.575in W57 - - - - - - - -
RS Stock No. 323-9037
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CD10
THB1,923.45
Each
Units
5A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 2 (ac) kA - - - - -
RS Stock No. 729-2830
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3600-P10-SI-0.5A
Brand :ETA
THB2,319.22
Each
Units
500mA 1 - - 11.5mm 3600 - - - - - - - -
RS Stock No. 729-2849
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3600-P10-Si-4A
Brand :ETA
THB3,370.71
Each
Units
4A 1 - - 11.5mm 3600 - - - - - - - -
RS Stock No. 405-9141
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2-5700-IG1-P10-DD-000040-10A
Brand :ETA
THB645.93
Each
Units
10A 1 - - 29mm 2-5700 - - - - - - - -
RS Stock No. 782-0876
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W23-X1A1G-30
THB861.18
Each
Units
30A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
RS Stock No. 899-4596
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C25UM
Brand :Altech
THB1,835.82
Each
Units
25A 3 - 480Y/277V - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Appliances, Business Equipment, Control Circuit Applications, Lighting, Low Inrush Motors, UL508 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS Stock No. 212-2001
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3130-F120-P7T1-W02Q-15A
Brand :ETA
THB1,907.03
Each
Units
15A 2 - - 36mm 3130 - - - - - - - -
RS Stock No. 899-9062
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3G32UM
Brand :Altech
THB2,303.57
Each
Units
32A 3 - 480Y/277V - V-EA - Time Delay 10 kA MCCB - - - -
RS Stock No. 729-2754
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2-5700-IG2-P10-DD-000040-6A
Brand :ETA
THB810.47
Each
Units
6A 1 - - - 2 5700 - - - - - - - -
RS Stock No. 899-4600
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C2UL
Brand :Altech
THB2,651.73
Each
Units
2A 3 - 480Y/277V - UL Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS Stock No. 312-3645
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB07
THB763.07
Each
Units
2A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 782-7938
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W57-XB7A4A10-5
THB80.77
Each
Units
5A 1 - 250V ac 0.575in W57 - - - - - - - -
RS Stock No. 898-1660
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1DU20R
Brand :Altech
THB396.27
Each
Units
20A 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. 898-2341
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1B10UM
Brand :Altech
THB580.76
Each
Units
10A 1 - 42 V dc, 277 V ac - V-EA Control Circuit, Industrial, Lighting, Motors, Solenoids, Transformers, Wiring Time Delayed 10 kA MCB - - - -
RS Stock No. 458-8627
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F72N-P7T1-A20Q-10A
Brand :ETA
THB823.51
Each
Units
10A 2 - - 25mm 3120-F7 - - - - - - - -
RS Stock No. 782-8082
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W31-X2M1G-35
THB1,061.17
Each
Units
35A 1 - 50 V dc, 240 V ac 0.69in W31 - - - - - - - -
RS Stock No. 729-2811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3130-F130-P7T1-W02Q-12A
Brand :ETA
THB1,201.31
Each
Units
12A 3 - - - 3130 - - - - - - - -
RS Stock No. 898-4906
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1CU5R
Brand :Altech
THB387.22
Each
Units
5A 1 - 48 V dc, 277 V ac - R Appliances, Business Equipment, Control Circuit, Lighting, Power Supplies, Sensitive Electronics, Wiring Protection Time Delayed 10 kA MCB - - - -
RS Stock No. 899-4580
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C20UM
Brand :Altech
THB1,835.82
Each
Units
20A 3 - 480Y/277V - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Appliances, Business Equipment, Control Circuit Applications, Lighting, Low Inrush Motors, UL508 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
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