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 81 - 100 รายการจาก 1619 รายการ / Viewing 81 - 100 of 1619 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. 899-4565
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C16UL
Brand :Altech
THB2,651.73
Each
Units
16A 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. 782-0921
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W28-XQ1A-7
THB148.04
Each
Units
7A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
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. 282-6545
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2210-T210-K0M1-H121-5A
Brand :ETA
THB1,380.72
Each
Units
5A 1 - - 83.5mm 2210 - - - - - - - -
RS Stock No. 782-0882
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W23-X1A1G-50
THB923.06
Each
Units
50A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
RS Stock No. 729-2818
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3130-F130-P7T1-W02Q-10A
Brand :ETA
THB1,174.14
Each
Units
10A 3 - - - 3130 - - - - - - - -
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. 312-3730
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB21
THB911.02
Each
Units
16A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1.5 kA - - - - -
RS Stock No. 405-9135
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2-5700-IG1-P10-DD-000040-7A
Brand :ETA
THB637.73
Each
Units
7A 1 - - 29mm 2-5700 - - - - - - - -
RS Stock No. 782-7934
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W57-XB7A4A10-20
THB115.38
Each
Units
20A 1 - 250V ac 0.575in W57 - - - - - - - -
RS Stock No. 782-8054
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W51-A121B1-20
THB121.95
Each
Units
20A 1 - 125V ac 0.598in W51 - - - - - - - -
RS Stock No. 458-8605
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F72N-P7T1-A20Q-5A
Brand :ETA
THB817.63
Each
Units
5A 2 - - 25mm 3120-F7 - - - - - - - -
RS Stock No. 782-6565
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W28-XT1A-15
THB109.69
Each
Units
15A 1 - 32 V dc, 250 V ac 0.76in W28 - - - - - - - -
RS Stock No. 881-0915
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CA2-B0-26-650-121-C
THB1,989.13
Each
Units
50A 2 - - - C General Purpose Long 10000 A @ 277 V ac, 5000 A @ 125/250 V dc MCCB - 38.6mm 38.61 x 52.37mm 52.4mm
RS Stock No. 409-867
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1610-21-6A
Brand :ETA
THB278.99
Each
Units
6A 1 - 32V dc 20mm 1610 - - - - - - - -
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 - - - -
RS Stock No. 868-9030
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4430.0022
Brand :Schurter
THB659.23
Each
Units
10A 2 - 60 V dc, 240 V ac - TA45 - - - - - - - -
RS Stock No. 782-0860
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W23-X1A1G-15
THB923.06
Each
Units
15A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
RS Stock No. 868-9165
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4430.2051
Brand :Schurter
THB1,014.641
Each: (In a Pack of 20)
Units
20A 2 - 60 V dc, 240 V ac - TA45 - - - - - - - -
RS Stock No. 729-2855
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3600-P10-Si-10A
Brand :ETA
THB2,467.99
Each
Units
10A 1 - - 11.5mm 3600 - - - - - - - -
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