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Circuit Breakers

Browse available Circuit Breakers part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

For BOM, shortage or hard-to-find requirements, send your part number and quantity to Winsun (HK) Electronics for availability, lead-time and quotation support.

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Datasheets & Specifications Access technical references quickly
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Photo Mfr. Part # Availability Price Quantity Datasheet Series Packaging Product Status Mounting Type Breaker Type Current Rating (Amps) Voltage Rating - AC Voltage Rating - DC Actuator Type Number of Poles Illumination Illumination Voltage (Nominal) Approval Agency
5SJ41167HG42 Siemens

5SJ41167HG42

MCB 5SJ4 1P 277V 16A 10K C-TRIP

Siemens

1,205 -
Datasheet SENTRON Box Active DIN Rail - 16A 400 V 60 V Lever 1 None - CCC, CE, EAC, UL489
2C25UL Altech Corporation

2C25UL

CIR BRKR THRM-MAG 25A LEVER

Altech Corporation

3,588 -
Datasheet UL Bulk Active DIN Rail Thermal Magnetic 25A 480 V - Lever 2 None - CE, cULus, UL489
5SJ41037HG42 Siemens

5SJ41037HG42

MCB 5SJ4 1P 277V 3A 10K C-TRIP

Siemens

2,139 -
Datasheet 5SJ4 Bulk Active DIN Rail - 3A 400 V 60 V Lever 1 None - CCC, CE, CSA, EAC, UL489, VDE
412-K14-LN2-5A E-T-A

412-K14-LN2-5A

CIR BRKR THRM 5A 115VAC 28VDC

E-T-A

1,352 -
Datasheet 412 Bulk Active Panel Mount Thermal 5A 115 V 28 V Push-Pull Plunger 1 None - CSA C22.2 No 235, UL1077
HCB-2/30/L Hartland Controls/Littelfuse

HCB-2/30/L

120/240V 30A 2P CIRCUIT BREAKER,

Hartland Controls/Littelfuse

1,308 -
Datasheet HCB Box Active DIN Rail Thermal Magnetic 30A 240 V - Lever 2 None - CSA C22.2 No 5-02, UL489
412-K14-LN2-2A E-T-A

412-K14-LN2-2A

CIR BRKR THRM 2A 115VAC 28VDC

E-T-A

3,465 -
Datasheet 412 Bulk Active Panel Mount Thermal 2A 115 V 28 V Push-Pull Plunger 1 None - CSA C22.2 No 235, UL1077
7940102288 Weidmüller

7940102288

CIR BRKR 300MA 250VAC 80VDC

Weidmüller

1,645 -
Datasheet CB4200 Bulk Active DIN Rail Thermal Magnetic 300mA 250 V 80 V Push to Reset 1 - - CSA C22.2 No 235, UL1077, VDE
7940102172 Weidmüller

7940102172

CIR BRKR THRMMAG 8A 250VAC 80VDC

Weidmüller

2,553 -
Datasheet CB4200 Bulk Active DIN Rail Thermal Magnetic 8A 250 V 80 V Push to Reset 1 - - CSA C22.2 No 235, UL1077, VDE
7940126719 Weidmüller

7940126719

CIR BRKR THRMMAG 6A 250VAC 80VDC

Weidmüller

3,666 -
Datasheet CB4200 Bulk Active DIN Rail Thermal Magnetic 6A 250 V 80 V Push to Reset 1 - - CSA C22.2 No 235, UL1077, VDE
413-K14-LN2-40A E-T-A

413-K14-LN2-40A

CIR BRKR THRM 40A 115VAC 28VDC

E-T-A

3,150 -
Datasheet 413 Bulk Active Panel Mount Thermal 40A 115 V 28 V Push-Pull Plunger 1 None - CSA C22.2 No 235, UL1077
3D30UM Altech Corporation

3D30UM

CIR BRKR THRM-MAG 30A LEVER

Altech Corporation

4,842 -
Datasheet V-EA Bulk Active DIN Rail Thermal Magnetic 30A 480 V - Lever 3 None - CSA, UL508
3G30UM Altech Corporation

3G30UM

CIR BRKR THRM-MAG 30A LEVER

Altech Corporation

2,615 -
Datasheet V-EA Bulk Active DIN Rail Thermal Magnetic 30A 480 V - Lever 3 None - CSA, UL508
2C50UL Altech Corporation

2C50UL

CIR BRKR THRM-MAG 50A LEVER

Altech Corporation

1,688 -
Datasheet UL Bulk Active DIN Rail Thermal Magnetic 50A 240 V - Lever 2 None - CE, cULus, UL489
3D20UM Altech Corporation

3D20UM

CIR BRKR THRM-MAG 20A LEVER

Altech Corporation

3,783 -
Datasheet V-EA Bulk Active DIN Rail Thermal Magnetic 20A 480 V - Lever 3 None - CSA, UL508, VDE
3G10UM Altech Corporation

3G10UM

CIR BRKR THRM-MAG 10A LEVER

Altech Corporation

3,329 -
Datasheet V-EA Bulk Active DIN Rail Thermal Magnetic 10A 480 V - Lever 3 None - CSA, UL508
3D15UM Altech Corporation

3D15UM

CIR BRKR THRM-MAG 15A LEVER

Altech Corporation

4,029 -
Datasheet V-EA Bulk Active DIN Rail Thermal Magnetic 15A 480 V - Lever 3 None - CSA, UL508
2D40UL Altech Corporation

2D40UL

CIRCUIT BREAKER 40A 2P UL489

Altech Corporation

3,674 -
Datasheet UL Bulk Active DIN Rail Thermal Magnetic 40A 240 V - Lever 2 None - CE, cULus, UL489
7940102165 Weidmüller

7940102165

CIR BRKR 15A 250VAC 80VDC

Weidmüller

4,293 -
Datasheet CB4200 Bulk Active DIN Rail Thermal Magnetic 15A 250 V 80 V Push to Reset 1 - - CSA C22.2 No 235, UL1077, VDE
2479170000 Weidmüller

2479170000

CB MCB 489 3P D 15A ACDC

Weidmüller

1,142 -
Datasheet MCB 489 Bulk Active DIN Rail Thermal Magnetic 15A 277 V - Lever 3 None - CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, VDE
W67-X2Q10-5 TE Connectivity Potter & Brumfield Relays

W67-X2Q10-5

CIR BRKR MAG-HYDR 5A 277VAC

TE Connectivity Potter & Brumfield Relays

2,241 -
Datasheet W6 Bulk Active Panel Mount Magnetic (Hydraulic Delay) 5A 277 V - Lever 1 - - -
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WINSUN SOURCING SUPPORT

Need Circuit Breakers Sourcing Support?

Send the manufacturer, part number, quantity and target delivery requirement. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and hard-to-find or obsolete components.

Global component sourcing support BOM, shortage and EOL support
FREQUENTLY ASKED QUESTIONS

Circuit Breakers FAQ

Common questions about selecting, comparing and sourcing Circuit Breakers components through Winsun (HK) Electronics.

What should I check when selecting Circuit Breakers components?

Compare the manufacturer part number, electrical specifications, package, operating conditions and application requirements. The product datasheet should be used to confirm technical suitability.

Can Winsun help source specific Circuit Breakers part numbers?

Yes. Send the exact part number, manufacturer and required quantity. Winsun (HK) Electronics can assist with availability checks, quotation support and sourcing options based on your requirement.

Do you support shortage, obsolete or hard-to-find Circuit Breakers parts?

Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

How do I request a quote for Circuit Breakers components?

Submit an RFQ with the part number, manufacturer, quantity and target delivery requirement. Our sales team will review your request and follow up with current sourcing information.