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. 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. 899-3339
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2CU5R
Brand :Altech
THB840.40
Each
Units
5A 2 - 480Y/277V - R Appliance Circuit, Appliances, Business Equipment, Control Circuit Application, Lighting, Power Supplies, Sensitive Electronics, UL1077 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
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. 898-2525
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1BU6R
Brand :Altech
THB387.22
Each
Units
6A 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. 899-4565
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. 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. 899-1692
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2DU5L
Brand :Altech
THB1,631.84
Each
Units
5A 2 - - - L Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformer, UL489 Applications Time Delay 10 kA MCCB - - - -
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. 899-4593
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C25UL
Brand :Altech
THB2,651.73
Each
Units
25A 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. 898-4934
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1D03UL
Brand :Altech
THB838.38
Each
Units
300mA 1 - 277V ac - UL Heaters, High Inrush Motors, Power Supplies, Reactive Loads, Transformers Time Delayed 10 kA MCB - - - -
RS Stock No. 899-1907
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2G40UM
Brand :Altech
THB1,407.19
Each
Units
40A 2 - - - V-EA - Time Delay 10 kA MCCB - - - -
RS Stock No. 899-4587
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C20UL
Brand :Altech
THB2,651.73
Each
Units
20A 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. 899-4603
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3C2UM
Brand :Altech
THB1,835.82
Each
Units
2A 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. 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. 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. 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. 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. 898-1660
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. 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. 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 - - - -