{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1FA22-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1FA22-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1FA22-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1FA22-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, 2 NO + 2 NC, screw-type terminals, snap-on mounting, 10 A maximum, for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"It snaps onto 3RT2 power contactors and 3RH2 contactor relays, expanding the control circuit without extra wiring space on the DIN rail. The contact arrangement is laid out as 1 NO, 1 NC, 1 NC, 1 NO across four current paths, giving you two independent changeover pairs. With a mechanical life of 10 million switching cycles and contact reliability of 1 fault per 100 million operations at 17 V / 1 mA, this block is built for high-cycle auxiliary circuits where signal integrity matters. The thermal continuous current is 10 A, but the switching capacity depends on voltage and duty. At 24 V DC the rated operational current is 10 A; at 60 V DC it drops to 4.7 A; at 110 V DC it's 3 A; at 220 V DC it's 1.2 A; at 440 V DC it's 0.5 A; and at 600 V DC it's 0.26 A. For AC-15 inductive loads at 690 V the rating is 1 A. These numbers govern whether the contacts will hold up under your specific coil or pilot-duty load — don't size by the 10 A blanket figure alone. Snap-on mounting directly onto the front of 3RT2 contactors or 3RH2 contactor relays — no DIN-rail space consumed. The screw-type terminals accept two conductors per clamp: 2x (0.5 to 1.5 mm²) with core-end processing, or 2x (0.75 to 2.5 mm²). AWG equivalents are 2x (20 to 16) and 2x (18 to 14). Dimensions are 36 mm wide, 37.5 mm high, and 43.7 mm deep — compact enough to fit inside a shallow enclosure without protruding past the contactor profile.","metaTitle":"Siemens 3RH2911-1FA22-ZX95 SIRIUS Auxiliary Switch, 2 NO + 2","metaDescription":"Siemens SIRIUS auxiliary switch 3RH2911-1FA22-ZX95, 2 NO + 2 NC contacts, 10 A max, screw terminals, snap-on for 3RT2/3RH2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"43.7 mm","Width":"36 mm","Height":"37.5 mm","Maximum":"10 A","at 24 V":"6 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"6 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"6 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","Lagging Switching":"0","Product Brand Name":"SIRIUS","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","Instantaneous Contact":"2","With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AC-15 at 690 V rated value":"1 A","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Switching Cycles) Typical":"10 000 000","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"}},"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=21253&mlfb=3RH2911-1FA22-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1FA22-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the note 'with 3RH2' on this component line?","answer":"The note indicates this auxiliary switch is designed for use with 3RH2 contactor relays (and 3RT2 power contactors). It snaps onto the front of those devices, not onto a DIN rail."},{"question":"What is the depth of 3RH2911-1FA22-ZX95?","answer":"The depth is 43.7 mm."},{"question":"Will 3RH2911-1FA22-ZX95 drop into a panel specified around 3RH2122-1WB40 without rewiring?","answer":"No — the 3RH2911-1FA22-ZX95 is a front-mounted block for 3RT2/3RH2, while the 3RH2122-1WB40 is a standalone coupling relay that mounts on DIN rail. The wiring layout and physical footprint are different; you would need to rewire and possibly adjust the panel layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1FA22-ZX95","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/3RH2911-1FA22-ZX95 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}}