Solid State Relays (SSR)

Use the filters and product table below to compare Solid State Relays (SSR) components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Packaging	Product Status	Mounting Type	Circuit	Output Type	Voltage - Input	Voltage - Load	Load Current	On-State Resistance (Max)	Termination Style	Operating Temperature	Supplier Device Package	Approval Agency	Grade	Qualification
3RF21201AA02 SS RELAY,22.5MM,20A,230V,24VDC-C Siemens	3,408	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	24VDC	24 V ~ 230 V	20 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR, VDE	-	-
3RF21201AA42 SS RELAY,22.5MM,20A,230V,4-30VDC Siemens	3,745	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	4 ~ 30VDC	24 V ~ 230 V	20 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR, VDE	-	-
3RF21203AA02 SS RELAY,22.5MM,20A,230V,24VDC-C Siemens	3,500	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	24VDC	24 V ~ 230 V	20 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR, VDE	-	-
3RF20201AA22 SS RELAY,45MM,20A,230V,110-230VA Siemens	4,839	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	110 ~ 230VAC	24 V ~ 230 V	20 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR	-	-
3RF20504AA02 24-230V,45MM RELAY,50 A,SCRW/SPR Siemens	2,898	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	24VDC	24 V ~ 230 V	50 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR	-	-
3RF20301BA04 SEMICONDUCTOR RELAY 3RF2 Siemens	4,600	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC	24VDC	48 V ~ 460 V	30 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR	-	-
3RF20301AA04 230/460V,45MM SS RELAY,30 A,SCRE Siemens	1,467	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	24VDC	48 V ~ 460 V	30 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR	-	-
3RF21202AA42 SS RELAY,22.5MM,20A,230V,4-30VDC Siemens	1,122	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	4 ~ 30VDC	24 V ~ 230 V	20 A	-	Spring Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR, VDE	-	-
3RF21202AA02 SS RELAY,22.5MM,20A,230V,24VDC,S Siemens	3,450	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	24VDC	24 V ~ 230 V	20 A	-	Spring Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR, VDE	-	-
3RF20301AA22 SS RELAY,45MM,30A,230V,110-230VA Siemens	1,687	-	RFQ	Datasheet	SIRIUS	Box	Active	Chassis Mount	SPST-NO (1 Form A)	AC, Zero Cross	110 ~ 230VAC	24 V ~ 230 V	30 A	-	Screw Terminal	-25°C ~ 60°C	-	CE, CSA, EAC, RCM, UKCA, UR	-	-

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FREQUENTLY ASKED QUESTIONS

Solid State Relays (SSR) FAQ

Common questions about filtering, comparing and sourcing Solid State Relays (SSR) components.

How can I narrow the Solid State Relays (SSR) 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 Solid State Relays (SSR) 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.