{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1946-6A","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1946-6A","canonicalUrl":"https://aoctrl.com/siemens/3RT1946-6A","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1946-6A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, replacement contact pieces, 3RT1946-6A, for contactor frame size S3, 3-pole, AC-3 45 kW, 3 NO main contacts, consists of 3 movable and 6 fixed contacts with mounting parts.","salesMarkdown":"The Siemens 3RT1946-6A is a replacement contact-piece kit for a SIRIUS S3-frame power contactor. It covers the main contacts only — 3 NO poles — and ships as three movable and six fixed contacts plus the mounting hardware. The kit is rated for AC-3 duty at 45 kW, which means it handles the inrush and breaking of squirrel-cage motors up to that load. If you are rebuilding an S3 contactor in a panel, this is the factory-matched set of silver-alloy tips and arc runners, not a generic substitute. The 3RT1946-6A is marked as a phased-out product. The official successor is the SIRIUS 3RT2 contactor series — meaning if you are stocking spares for a legacy S3-based panel, this kit is the correct consumable for the installed base, but new designs should move to the 3RT2. No last-time-buy date is recorded, so treat it as a critical-spare item — one in the cabinet before it fails.","metaTitle":"3RT1946-6A Siemens SIRIUS Replacement Contact Kit, S3, 45 kW","metaDescription":"Siemens 3RT1946-6A replacement contact pieces for SIRIUS S3 contactor. 3-pole, AC-3 45 kW, 3 NO main contacts. Phased-out product; successor is SIRIUS 3RT2. Sourced to order agains","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"lifecycle_stage":"current","Substance Prohibitance (Date)":"07/01/2006"}},"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=136771&mlfb=3RT1946-6A","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1946-6A/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for the 3RT1946-6A?","answer":"The official successor is the SIRIUS 3RT2 contactor series. For a direct drop-in replacement of the contact pieces, no second-source exists — the 3RT1946-6A is the factory service kit for the S3 frame. If you need a complete contactor, the 3RT2 series is the replacement path."},{"question":"Will the 3RT1946-6A drop into a panel specified around the 3RT1044-1FB46?","answer":"The 3RT1044-1FB46 is a complete S3-frame power contactor with screw terminals and a 24 V DC coil. The 3RT1946-6A is the replacement contact kit for that same S3 frame. If you are rebuilding a 3RT1044-1FB46, this kit is the correct set of main contacts. No rewiring is needed — it uses the same mounting and terminal hardware."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1946-6A","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/3RT1946-6A 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}}