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 2066 รายการ / Viewing 61 - 80 of 2066 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. 898-2010
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1Z1UM
Brand :Altech
THB1,129.73
Each
Units
1A 1 - 42V dc - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Components which Fail-Short, Components/Devices with Low Surge Current and Short Circuit Withstand Capabilities, Semiconductors, UL508 Application Time Delay 10 kA MCCB - - - -
RS Stock No. 782-0921
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W28-XQ1A-7
THB91.01
Each
Units
7A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS Stock No. 830-4307
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4404.0104
Brand :Schurter
THB97.58
Each
Units
14A 1 - 32 V dc, 240 V ac 19mm T9 - - - - - - - -
RS Stock No. 899-9062
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3G32UM
Brand :Altech
THB1,890.89
Each
Units
32A 3 - 480Y/277V - V-EA - Time Delay 10 kA MCCB - - - -
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. 868-9178
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4430.2115
Brand :Schurter
THB593.04
Each
Units
20A - - 125/250V - ABT - - - MCB - - - -
RS Stock No. 782-7934
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W57-XB7A4A10-20
THB83.85
Each
Units
20A 1 - 250V ac 0.575in W57 - - - - - - - -
RS Stock No. 729-2754
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2-5700-IG2-P10-DD-000040-6A
Brand :ETA
THB763.62
Each
Units
6A 1 - - - 2 5700 - - - - - - - -
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. 286-4020
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F551-H7T1-W02D-20A
Brand :ETA
THB611.76
Each
Units
20A 2 - - 25mm 3120 - - - - - - - -
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. 729-2855
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3600-P10-Si-10A
Brand :ETA
THB2,298.54
Each
Units
10A 1 - - 11.5mm 3600 - - - - - - - -
RS Stock No. 458-8683
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1180-01-2A
Brand :ETA
THB555.73
Each
Units
2A 1 - - 24.4mm 1180 - - - - - - - -
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. 870-0981
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.T9-611P-3
Brand :Schurter
THB104.50
Each
Units
3A 1 - 48 V dc, 240 V ac - T9-611 Designed for Standard and Medical Applications, Household Appliances, HVAC, Industrial Appliances, Power Supplies, Power Tools, Uninterruptible Power Supply - 2 kA MCB 16mm 14mm 14 x 16 (Dia.)mm -
RS Stock No. 881-1007
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CA3-B0-24-450-121-D
THB6,354.67
Each: (In a Pack of 2)
Units
5A 3 - - - C General Purpose Medium 5000 A @ 125/250 V dc, 10000 A @ 277 V ac MCCB - 57.9mm 57.91 x 52.37mm 52.4mm
RS Stock No. 712-7676
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F551-H7T1-W14DR4-5A
Brand :ETA
THB909.72
Each
Units
5A 2 - - 25mm 3120 - - - - - - - -
RS Stock No. 898-4760
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1CR2L
Brand :Altech
THB838.38
Each
Units
2A 1 - 240V ac - L Control Circuit, Lighting, Low Inrush Motors, Receptacles, Resistive Loads, Wiring Protection Time Delayed 10 kA Miniature Molded Case - - - -
RS Stock No. 898-2607
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1C1UL
Brand :Altech
THB838.38
Each
Units
1A 1 - 277V ac - UL Control Circuit, Lighting, Low Inrush Motors, Receptacles, Resistive Loads, Wiring Protection Time Delayed 10 kA MCB - - - -
RS Stock No. 458-8605
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F72N-P7T1-A20Q-5A
Brand :ETA
THB784.13
Each
Units
5A 2 - - 25mm 3120-F7 - - - - - - - -
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