{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1FA22-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1FA22-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1FA22-ZW95, 2 NO + 2 NC, screw terminals, size S00, 10 A, snap-on mounting.","salesMarkdown":"It snaps onto size S00 contactors and contactor relays in the SIRIUS family, adding four auxiliary poles for signal feedback or interlocking in a control panel. Rated for 10 A thermal current (Ith), the contacts carry 10 A at 24 V DC and derate across the voltage range — 6 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.5 A at 440 V DC. The AC-15 rating at 690 V is 1 A, matching typical pilot-duty loads like contactor coils and solenoid valves. That 10 A thermal figure governs the maximum continuous current through any one pole; the DC switching curve matters more for actual break capability on inductive DC loads. The block is IP20 on the front, rated for a surge voltage of 6 kV, and accepts 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) conductors with ferruled ends. Mounts by snap-on onto any SIRUS S00 contactor or contactor relay — no tools needed, but verify the contactor's auxiliary slot accepts the 3RH1 block profile. The 36.5 mm width keeps the assembly within the S00 envelope, important for high-density DIN-rail layouts where every millimeter of space is allocated. Screw terminals are standard; strip length of 8 to 10 mm avoids whiskers under the terminal clamp.","metaTitle":"Siemens 3RH1911-1FA22-ZW95 SIRIUS Auxiliary Switch Block, 2N","metaDescription":"Siemens SIRIUS 3RH1911-1FA22-ZW95 auxiliary switch block, 2 NO + 2 NC, 10 A thermal, screw terminals, snap-on S00. Phased-out; successor 3RH2 series. Sourced to order against RFQ.","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","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","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=13751&mlfb=3RH1911-1FA22-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1FA22-ZW95/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RH1911-1FA22-ZW95?","answer":"The official successor is the SIRIUS 3RH2 series auxiliary switch block, such as the 3RH2122-1WB40. It offers the same 2 NO + 2 NC configuration and screw terminals but in a larger 45 mm wide, 73 mm deep package with a varistor and 30 million cycle mechanical life. The form factor differs, so panel rework is required."},{"question":"What are the key ratings for 3RH1911-1FA22-ZW95?","answer":"Thermal current Ith is 10 A. DC switching capacity is 10 A at 24 V, 6 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.5 A at 440 V. AC-15 rating at 690 V is 1 A. Mechanical life is 10 million cycles typical. Contact reliability is 1 fault per 100 million operations at 17 V, 1 mA."},{"question":"Where can I buy 3RH1911-1FA22-ZW95?","answer":"Sourced to order against an RFQ through independent distribution. Since this is a phased-out product, availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1FA22-ZW95","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-ZW95 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}}