{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2916-1FA22","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2916-1FA22","canonicalUrl":"https://aoctrl.com/siemens/3RH2916-1FA22","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2916-1FA22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 3RH2916-1FA22, size S00, 2 N/O + 2 N/C, snap-on front mount, 6 A at 230 V AC-15, 43.7 × 36 × 37.5 mm.","salesMarkdown":"The Siemens 3RH2916-1FA22 is a SIRIUS auxiliary switch block designed to snap onto the front of size S00 contactor relays and power contactors (3RT2 series). It adds two normally-open and two normally-closed instantaneous auxiliary contacts to the base contactor, giving you four poles total for feedback, interlocking, or PLC input signals. Rated at 6 A at 230 V AC-15 for inductive solenoid loads, it also carries 10 A at 24 V AC-15 and 1 A at 690 V AC-15 — covering the full control-voltage range you'll see in a 400 V panel. Snaps onto the front of the contactor — no tools, no DIN-rail space consumed beyond the contactor itself. The 36 mm width matches the S00 contactor footprint, and the 43.7 mm depth stays within the contactor envelope, so panel layout doesn't change when you add it. ## Contact reliability and mirror contact function This switch block also provides a mirror contact function per IEC 60947-4-1 when used with the 3RT2 contactor. That means one of the N/C contacts mechanically mirrors the main contactor's N/O power poles — critical for safety circuits where you need positive indication that the main contacts have opened before allowing access to the load. RoHS compliant per the substance prohibition date of October 1, 2009. Surge voltage resistance rated at 6 kV, which covers the impulse withstand requirements for 400 V industrial control circuits. Terminal capacity accepts 2 × (0.5 to 1.5 mm²) solid or 2 × (0.75 to 2.5 mm²) stranded with ferrule, or 2 × (20 to 16) AWG solid / 2 × (18 to 14) AWG stranded — covers the wire sizes you'll typically run to auxiliary contacts in a control panel.","metaTitle":"Siemens 3RH2916-1FA22 SIRIUS Auxiliary Switch, 2 N/O + 2 N/C","metaDescription":"Siemens 3RH2916-1FA22 SIRIUS auxiliary switch, size S00, snap-on front mount for 3RT2 contactors. 2 N/O + 2 N/C contacts, 6 A at 230 V AC-15, 43.7 mm depth. Current production. Quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"43.7 mm","Width":"36 mm","Height":"37.5 mm","at 24 V":"6 A","at 48 V":"2 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"0.9 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"0.3 A","at 400 V":"3 A","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Product Category":"Auxiliary switch","Lagging Switching":"0","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch","Suitability For Use":"Contactor relay and power contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 440 V rated value":"0.5 A","at 600 V rated value":"0.26 A","Design Of The Product":"for snapping onto the front","Instantaneous Contact":"2","Substance Prohibitance (Date)":"10/01/2009","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes; with 3RT2","operational current at AC-15 at 690 V rated value":"1 A","Mechanical Service Life (Operating Cycles) Typical":"1 000 000","operational current of auxiliary contacts at AC-12 maximum":"10 A","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","number of CO contacts of auxiliary contacts instantaneous contact":"0","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=96609&mlfb=3RH2916-1FA22","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2916-1FA22/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RH2916-1FA22?","answer":"The 3RH2122-1BA40 is a similar SIRIUS auxiliary switch block, but it's designed for size S2 contactors (wider footprint) and uses screw terminals rather than the snap-on front design of the S00-size 3RH2916-1FA22. The 3RH2916-1FA22 will not drop into a panel wired for the 3RH2122-1BA40 without changing the contactor base and rewiring the terminal layout."},{"question":"What compliance documentation does Siemens provide for 3RH2916-1FA22?","answer":"RoHS compliance is confirmed with a substance prohibition date of October 1, 2009. The part carries IP20 front protection and 6 kV surge voltage resistance. Standard Siemens declarations of conformity and material declarations are available through the SIRIUS documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2916-1FA22","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RH2916-1FA22 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}