{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1921-1DA11-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1921-1DA11-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH1921-1DA11-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1921-1DA11-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens, auxiliary switch block, 3RH1921-1DA11-ZX95, 1 NO+1 NC, screw connection, size S0...S12, for motor contactors.","salesMarkdown":"The Siemens 3RH1921-1DA11-ZX95 is an auxiliary switch block with one normally-open and one normally-closed contact, designed for lateral mounting on Siemens motor contactors in sizes S0 through S12. It uses screw terminals and conforms to the DIN EN50012 mounting standard, meaning it snaps onto the contactor side at a 10 mm pitch without additional brackets. ## Mounting and integration notes The block mounts laterally to the contactor — not on top — so it does not occupy the auxiliary terminal space used for other add-on modules. Verify the contactor frame size (S0 through S12) matches before ordering; the block will not fit larger S14 or S20 frames.","metaTitle":"Siemens 3RH1921-1DA11-ZX95 Auxiliary Switch Block, 1NO+1NC","metaDescription":"Siemens 3RH1921-1DA11-ZX95 auxiliary switch block, 1 NO+1 NC, screw connection, size S0...S12, for motor contactors. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current"}},"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=230322&mlfb=3RH1921-1DA11-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1921-1DA11-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RH1921-1DA11-ZX95 and get a price?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for availability and current pricing."},{"question":"What contactor sizes does the 3RH1921-1DA11-ZX95 fit?","answer":"It fits Siemens motor contactors in sizes S0 through S12, mounting laterally per DIN EN50012."},{"question":"What is the contact configuration of this auxiliary switch block?","answer":"It provides one normally-open and one normally-closed contact, wired via screw terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1921-1DA11-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/3RH1921-1DA11-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}}