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 2066 รายการ / Viewing 81 - 100 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. 312-3639
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB06
THB688.00
Each
Units
1A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
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. 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. 782-7938
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W57-XB7A4A10-5
THB80.77
Each
Units
5A 1 - 250V ac 0.575in W57 - - - - - - - -
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. 782-7887
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W67-X2Q12-30
THB755.34
Each
Units
30A 1 - 277V ac 0.75in W67 - - - - - - - -
RS Stock No. 286-4165
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3120-F521-H7T1-W01D-20A
Brand :ETA
THB809.94
Each
Units
20A 2 - - 25mm 3120 - - - - - - - -
RS Stock No. 782-0860
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W23-X1A1G-15
THB612.57
Each
Units
15A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
RS Stock No. 312-3730
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB21
THB890.77
Each
Units
16A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1.5 kA - - - - -
RS Stock No. 212-2001
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3130-F120-P7T1-W02Q-15A
Brand :ETA
THB885.85
Each
Units
15A 2 - - 36mm 3130 - - - - - - - -
RS Stock No. 312-3645
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB07
THB688.00
Each
Units
2A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS Stock No. 312-3803
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2DB09
THB1,500.31
Each
Units
4A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 3 (ac) kA - - - - -
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. 782-0882
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W23-X1A1G-50
THB641.33
Each
Units
50A 1 - 50 V dc, 250 V ac 0.69in W23 - - - - - - - -
RS Stock No. 868-9099
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4430.0890
Brand :Schurter
THB758.11
Each: (In a Pack of 20)
Units
15A 2 - 60 V dc, 240 V ac - TA45 - - - - - - - -
RS Stock No. 282-6523
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2210-T210-K0M1-H121-2A
Brand :ETA
THB1,196.30
Each
Units
2A 1 - - 83.5mm 2210 - - - - - - - -
RS Stock No. 312-3796
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2DB08
THB1,456.74
Each
Units
3A 2 - 277 V ac, 415 V ac 30mm GB2 - - 1 (dc) kA, 10 (ac) kA - - - - -
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. 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. 312-3623
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GB2CB05
THB785.48
Each
Units
500mA 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
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