Circuit Breakers

Use the filters and product table below to compare Circuit Breakers components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.

Parametric Selection Filter options by technical parameters

Stock & Datasheets Review availability and technical references

RFQ & BOM Support Send your target MPN, quantity or BOM

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
437-K60-4-07-240A CIR BRKR THRM-MAG 240A 144VDC E-T-A	9,857	-	RFQ	Datasheet	437	Bulk	Active	Chassis Mount	Thermal Magnetic	240A	-	110 V	Lever	1	None	-	-
437-K60-1-07-240A CIRC BRKR THRM MAGNETIC E-T-A	6,514	-	RFQ	Datasheet	437	Bulk	Active	Chassis Mount	Thermal Magnetic	240A	-	110 V	Lever	1	None	-	-
437-K60-1-07-200A CIRC BRKR THRM MAGNETIC E-T-A	8,999	-	RFQ	Datasheet	437	Bulk	Active	Chassis Mount	Thermal Magnetic	200A	-	110 V	Lever	1	None	-	-
446-K-H-N-300A CIR BRKR THRM-MAG 300A 28VDC E-T-A	3,029	-	RFQ	Datasheet	446	Bulk	Active	Chassis Mount	Thermal Magnetic	300A	-	28 V	Push to Reset	1	-	-	CSA C22.2 No 235, UL1077
447-K-H-FN-400A CIRC BRKR THRM MAGNETIC E-T-A	9,740	-	RFQ	Datasheet	447	Bulk	Active	Chassis Mount	Thermal Magnetic	400A	-	28 V	Push to Reset	1	None	-	CSA C22.2 No 235, UL1077
449-K-H-FN-SI-315A CIR BRKR THRM-MAG 315A 28VDC E-T-A	5,768	-	RFQ	Datasheet	449	Bulk	Active	Chassis Mount	Thermal Magnetic	315A	-	28 V	Push to Reset	1	None	-	CSA C22.2 No 235, UL1077
530-K-1-01-100A CIR BRKR 100A 240VAC 110VDC E-T-A	7,812	-	RFQ	Datasheet	530	Bulk	Active	Chassis Mount	Thermal Magnetic	100A	500 V	110 V	Lever	3	None	-	UL1077
530-K-4-02-100A CIR BRKR 100A 240VAC 110VDC E-T-A	4,261	-	RFQ	Datasheet	530	Bulk	Active	Panel Mount	Thermal Magnetic	100A	500 V	110 V	Lever	3	None	-	UL1077
530-K-4-04-20A CIR BRKR 20A 240VAC 110VDC E-T-A	3,869	-	RFQ	Datasheet	530	Bulk	Active	Panel Mount	Thermal Magnetic	20A	500 V	110 V	Lever	3	None	-	UL1077
530-K-1-02-SI-125A CIR BRKR THRM 125A E-T-A	4,565	-	RFQ	Datasheet	530	Bulk	Active	Chassis Mount	Thermal Magnetic	125A	500 V	110 V	Lever	3	None	-	UL1077

WINSUN SOURCING SUPPORT

Need Help Sourcing Circuit Breakers?

Send the target part number, manufacturer, specifications and quantity. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and alternative-part options when appropriate.

Availability and lead-time support BOM, shortage and alternative sourcing

Send part number & quantity Request a Quote

Need sourcing assistance? Contact Sales

FREQUENTLY ASKED QUESTIONS

Circuit Breakers FAQ

Common questions about filtering, comparing and sourcing Circuit Breakers components.

How can I narrow the Circuit Breakers selection?

Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.

Should I confirm the datasheet before selecting a part?

Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

Can Winsun (HK) Electronics help source a specific Circuit Breakers part number?

Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

Do you support BOM, shortage or alternative-part requirements?

Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.