{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA22-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA22-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1FA22-ZX95, 2 NO + 2 NC contacts, screw-type terminals, snap-on mounting, 10 A maximum, IP20 front protection.","salesMarkdown":"## Auxiliary Switch Block for SIRIUS Contactors – Phased Out, Successor Identified The Siemens 3RH1911-1FA22-ZX95 is a SIRIUS auxiliary switch block with a 2 NO + 2 NC contact configuration, designed for snap-on mounting onto contactor relays and power contactors of the 3RH1 series. The part is noted as a phased-out product with the successor being the SIRIUS 3RH2 series. The block carries a maximum thermal current of 10 A, but the real switching capacity depends on the voltage and duty. At 24 V DC it switches 6 A, at 125 V DC it handles 6 A, and at 230 V AC it also manages 6 A. For higher DC voltages the rating drops sharply — 0.3 A at 220 V DC and 0.26 A at 600 V DC. The AC-15 rating at 690 V is 1 A. These numbers define the actual load you can break, not just carry — important when selecting for a DC control circuit or an AC auxiliary contactor application. ## Snap-On Mounting and Panel Integration The block snaps onto the contactor without tools — no additional DIN-rail space needed. Dimensions are 36.5 mm wide, 37.5 mm high, and 41.5 mm deep, fitting the S00 contactor footprint. Screw terminals accept 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) with core end processing, or 2x (20...16) and 2x (18...14) AWG. ## Lifecycle Reality – Phased Out, Successor Available This part is marked as a phased-out product. The official successor is the SIRIUS 3RH2 series. For a BOM line that requires the 3RH1911-1FA22-ZX95, the 3RH2 series is the drop-in functional replacement — same contact arrangement (2 NO + 2 NC), similar current ratings, and the same snap-on mounting principle, though the physical dimensions and terminal layout differ.","metaTitle":"Siemens 3RH1911-1FA22-ZX95 SIRIUS Auxiliary Switch Block, 10","metaDescription":"Siemens 3RH1911-1FA22-ZX95 SIRIUS auxiliary switch block, 2 NO + 2 NC, 10 A, screw terminals, snap-on. Phased-out product; successor 3RH2 series available. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH1","Depth":"41.5 mm","Width":"36.5 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","Mounting type":"snap-on mounting","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Product brand name":"SIRIUS","Contact reliability":"one incorrect switching operation of 100 million switching operations (17 V, 5 mA)","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 conductors 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","Insulation voltage with degree of pollution 3 rated value":"690 V","Type of electrical connection for auxiliary and control current circuit":"screw-type terminals"}},"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=7475&mlfb=3RH1911-1FA22-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZX95/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RH1911-1FA22-ZX95?","answer":"The part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote — submit an RFQ for the latest position."},{"question":"What is the closest functional second-source for 3RH1911-1FA22-ZX95?","answer":"The official successor is the SIRIUS 3RH2 series, for example the 3RH2122-1WB40. It offers the same 2 NO + 2 NC contact arrangement and similar current ratings, but check the physical dimensions and terminal layout — the 3RH2 is larger (73 mm deep vs 41.5 mm, 45 mm wide vs 36.5 mm) and uses screw and snap-on mounting onto 35 mm DIN rail rather than direct snap-on to the contactor."},{"question":"What compliance documentation does this brand provide for 3RH1911-1FA22-ZX95?","answer":"As a Siemens SIRIUS product, standard documentation includes a CE declaration of conformity and compliance with relevant IEC/EN standards. The insulation voltage is rated at 690 V with degree of pollution 3, and surge voltage resistance is 6 kV. Contact reliability is specified as one incorrect switching operation per 100 million switching operations at 17 V, 5 mA."},{"question":"Will 3RH1911-1FA22-ZX95 drop into a panel specified around 3RH2122-1WB40?","answer":"Not directly without rewiring or adapter. The 3RH1911-1FA22-ZX95 snaps directly onto a 3RH1 contactor, while the 3RH2122-1WB40 mounts on 35 mm DIN rail and is larger (73 mm deep, 45 mm wide vs 41.5 mm deep, 36.5 mm wide). The terminal layout and wiring scheme also differ — the 3RH2122 uses screw terminals for 2x 4 mm² conductors, while the 3RH1911 accepts up to 2.5 mm². A panel designed for the 3RH2122 would need mechanical and wiring changes to accept the 3RH1911."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-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/3RH1911-1FA22-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}}