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. 899-9194
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3Z13UM
Brand :Altech
THB4,581.67
Each
Units
13A 3 - 480Y/277V - 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. 899-3039
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2C13UM
Brand :Altech
THB1,260.60
Each
Units
13A 2 - - - 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. 782-0930
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W31-X2M1G-10
THB880.43
Each
Units
10A 1 - 50 V dc, 240 V ac 0.69in W31 - - - - - - - -
RS Stock No. 870-1001
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TS-701-HT-12
Brand :Schurter
THB69.64
Each: (In a Pack of 100)
Units
12A 1 - 50 V dc, 250 V ac - TS-701 - - 1000 A MCB 9.7mm 8.9mm 8.9 x 9.7 (Dia.)mm -
RS Stock No. 899-4758
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3CU16R
Brand :Altech
THB1,223.88
Each
Units
16A 3 - 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. 881-1300
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EA2-B0-26-670-32E-HB
THB2,034.77
Each
Units
70A 2 - - - E Generators, Ideal for Higher Current and Voltage Applications, Industrial Appliances, Military, Renewable Energy Systems Long 5000 A @ 125 V dc, 5000 A @ 240 Vac MCCB - 53.2mm 53.15 x 69.85mm 69.9mm
RS Stock No. 881-8193
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1688476
THB293.32
1 Box of 5
Box(es)
- - - - - VS-09-TI-2EMV - - - - - - - -
RS Stock No. 173-9827
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4400.005
Brand :Schurter
THB218.205
Each (In a Box of 100)
Units
6 1 - 240V ac - T11 - - - - - - - -
RS Stock No. 899-1493
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2D32UL
Brand :Altech
THB1,767.82
Each
Units
32A 2 - 480Y/277V - UL Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers Time Delay 10 kA MCCB - - - -
RS Stock No. 881-1347
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EA3-B0-26-660-32E-HB
THB7,168.46
Each
Units
60A 3 - - - E Generators, Ideal for Higher Current and Voltage Applications, Industrial Appliances, Military, Renewable Energy Systems Long 5000 A @ 125 V dc, 5000 A @ 240 Vac MCCB - 79.7mm 79.7 x 69.85mm 69.9mm
RS Stock No. 899-2837
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2B20UM
Brand :Altech
THB1,260.60
Each
Units
20A 2 - - - 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 Circuits, Electronic Applications, Lighting, Motors, UL508 Applications, Wiring Protection Time Delay 10 kA MCCB - - - -
RS Stock No. 868-9364
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.4435.0042
Brand :Schurter
THB447.09
Each
Units
6A 2 - 60 V dc, 240 V ac - TA35 Cleaning Equipment, Commercial and Household Kitchen Appliances, Equipment for Construction, Industrial Appliances, Power Tools - 2 kA MCB - 34mm 34 x 26mm 26mm
RS Stock No. 175-1579
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV4PEM25B6
THB13,311.77
Each
Units
25A 3 TeSys 690V ac 116mm GV4PEM - - 10 kA @ 500 V ac - - - - -
RS Stock No. 881-0877
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CA1-B0-36-680-321-L
THB1,083.47
Each
Units
80A 1 - - - C General Purpose Long 5000 A @ 125/250 V dc, 10000 A @ 277 V ac MCCB - 19.3mm 19.3 x 52.37mm 52.4mm
RS Stock No. 175-1530
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.GV4PE115N
THB14,619.25
Each
Units
115A 3 TeSys 690V ac 116mm GV4PE - - 8 kA @ 660 → 690 V ac - - - - -
RS Stock No. 881-0962
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CA2-B0-34-650-221-C
THB4,060.215
Each: (In a Pack of 2)
Units
50A 2 - - - C General Purpose Medium 5000 A @ 125/250 V dc, 10000 A @ 277 V ac MCCB - 38.6mm 38.61 x 52.37mm 52.4mm
RS Stock No. 881-1255
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.EA1-B0-24-620-22A-DC
THB784.37
Each
Units
20A 1 - - - E Generators, Ideal for Higher Current and Voltage Applications, Industrial Appliances, Military, Renewable Energy Systems Medium 5000 A @ 125 V dc, 5000 A @ 240 Vac MCCB - 26.5mm 26.5 x 69.85mm 69.9mm
RS Stock No. 782-8026
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.W58-XC4C12A-5
THB204.49
Each
Units
5A 1 - 50 V dc, 250 V ac 0.66in W58 - - - - - - - -
RS Stock No. 899-3569
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.2Z2UM
Brand :Altech
THB2,342.43
Each
Units
2A 2 - - - 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. 899-9214
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.3Z3.5UM
Brand :Altech
THB4,838.46
Each
Units
3.5A 3 - 480Y/277V - 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 - - - -
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