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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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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
2478090000 Weidmüller

2478090000

CB MCB 489 2P C 3A ACDC

Weidmüller

182 -
Datasheet MCB 489 Bulk Active DIN Rail Thermal Magnetic 3A 480 V 125 V Lever 2 None - CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, VDE
2478110000 Weidmüller

2478110000

CB MCB 489 2P C 5A ACDC

Weidmüller

4,066 -
Datasheet MCB 489 Bulk Active DIN Rail Thermal Magnetic 5A 480 V 125 V Lever 2 None - CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, VDE
2478870000 Weidmüller

2478870000

CB MCB 489 2P D 6A ACDC

Weidmüller

2,319 -
Datasheet MCB 489 Bulk Active DIN Rail Thermal Magnetic 6A 480 V 125 V Lever 2 None - CE, CSA C22.2 No 5, CSA C22.2 No 235, TUV, UL489, VDE
4230-T120-K0CU-15A E-T-A

4230-T120-K0CU-15A

CIR BRKR THERM 15A 480VAC/125VDC

E-T-A

459 -
Datasheet 4230-T Bulk Active DIN Rail Thermal Magnetic 15A 480 V 125 V Lever 2 None - CSA C22.2 No 235, UL489
5SJ41188HG42 Siemens

5SJ41188HG42

MCB 5SJ4 1P 277V 15A 10K D-TRIP

Siemens

2,751 -
Datasheet 5SJ4 Bulk Active DIN Rail - 15A 400 V 60 V Lever 1 None - CCC, CE, CSA, EAC, UL489, VDE
W33-T2N1Q-20 TE Connectivity Potter & Brumfield Relays

W33-T2N1Q-20

CIR BRKR THRM 20A 250VAC 50VDC

TE Connectivity Potter & Brumfield Relays

218 -
Datasheet W33 Bulk Active Panel Mount Thermal 20A 250 V 50 V Rocker 2 - - -
W91-X152-20 TE Connectivity Potter & Brumfield Relays

W91-X152-20

CIR BRKR MAG-HYDR 20A 65VDC

TE Connectivity Potter & Brumfield Relays

145 -
Datasheet W9 Bulk Active Panel Mount Magnetic (Hydraulic Delay) 20A - 65 V Lever 1 - - -
W91-X152-15 TE Connectivity Potter & Brumfield Relays

W91-X152-15

CIR BRKR MAG-HYDR 15A 65VDC

TE Connectivity Potter & Brumfield Relays

4,263 -
Datasheet W9 Bulk Active Panel Mount Magnetic (Hydraulic Delay) 15A - 65 V Lever 1 - - -
W91-X112-2 TE Connectivity Potter & Brumfield Relays

W91-X112-2

CIR BRKR MAG-HYDR 2A 277VAC

TE Connectivity Potter & Brumfield Relays

2,048 -
Datasheet W9 Bulk Active Panel Mount Magnetic (Hydraulic Delay) 2A 277 V - Lever 1 - - -
5SJ41118HG41 Siemens

5SJ41118HG41

MCB 5SJ4 1P 240V 5A 14K D-TRIP

Siemens

3,062 -
Datasheet 5SJ4 Bulk Active DIN Rail - 5A 400 V 60 V Lever 1 None - CCC, CE, CSA, EAC, UL489, VDE
5SJ41107HG42 Siemens

5SJ41107HG42

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

Siemens

3,205 -
Datasheet 5SJ4 Bulk Active DIN Rail - 10A 400 V 60 V Lever 1 None - CCC, CE, CSA, EAC, UL489, VDE
IUGN6-1-51-30.0 Sensata-Airpax

IUGN6-1-51-30.0

CIR BRKR MAG-HYDR LEVER 30A

Sensata-Airpax

1,203 -
Datasheet IUG Bulk Active Panel Mount Magnetic (Hydraulic Delay) 30A - 80 V Toggle 1 None - UL1077
W31-X2M1G-1 TE Connectivity Potter & Brumfield Relays

W31-X2M1G-1

CIR BRKR THRM 1A 240VAC 50VDC

TE Connectivity Potter & Brumfield Relays

3,235 -
Datasheet W31 Bulk Active Panel Mount Thermal 1A 240 V 50 V Toggle 1 - - -
W31-X2M1G-35 TE Connectivity Potter & Brumfield Relays

W31-X2M1G-35

CIR BRKR THRM 35A 240VAC 50VDC

TE Connectivity Potter & Brumfield Relays

166 -
Datasheet W31 Bulk Active Panel Mount Thermal 35A 240 V 50 V Toggle 1 - - -
GP2E20 Schneider Electric

GP2E20

CIR BRKR THERM MAG 18A 690VAC PB

Schneider Electric

4,319 -
Datasheet - Box Active DIN Rail Thermal Magnetic 18A 690 V - Pushbutton 3 None - cUL, UL
GP2E21 Schneider Electric

GP2E21

CIR BRKR THERM MAG 23A 690VAC PB

Schneider Electric

1,393 -
Datasheet - Box Active DIN Rail Thermal Magnetic 23A 690 V - Pushbutton 3 None - cUL, UL
5SJ41018HG42 Siemens

5SJ41018HG42

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

Siemens

4,321 -
Datasheet SENTRON Box Active DIN Rail - 1A 400 V 60 V Lever 1 None - CCC, CE, EAC, UL489, VDE
GMB632PC10 Carlo Gavazzi Inc.

GMB632PC10

CIR BRKR THERM 10A 240VAC/125VDC

Carlo Gavazzi Inc.

3,786 -
Datasheet GMB63 Box Active DIN Rail Thermal Magnetic 10A 240 V 125 V Lever 2 None - CSA C22.2 No 5, IEC 60947-2, UL489
GP2E10 Schneider Electric

GP2E10

CIR BRK THERM MAG 6.3A 690VAC PB

Schneider Electric

264 -
Datasheet - Box Active DIN Rail Thermal Magnetic 6.3A 690 V - Pushbutton 3 None - cUL, UL
GP2E08 Schneider Electric

GP2E08

CIR BRK THERM MAG 4A 690VAC PB

Schneider Electric

231 -
Datasheet - Box Active DIN Rail Thermal Magnetic 4A 690 V - Pushbutton 3 None - cUL, UL
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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.