{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1276-6AP36-ZI41","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1276-6AP36-ZI41","canonicalUrl":"https://aoctrl.com/siemens/3RT1276-6AP36-ZI41","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1276-6AP36-ZI41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS vacuum contactor, 3RT1276-6AP36-ZI41, 250 kW at 400 V AC-3, AC/DC coil 220-240 V, 2NO+2NC auxiliary contacts, 3-pole, size S12, bar connections, conventional operating mechanism.","salesMarkdown":"The Siemens SIRIUS 3RT1276-6AP36-ZI41 is a vacuum contactor rated for 250 kW at 400 V in AC-3 duty — the standard motor-switching category per IEC 60947-4-1 — meaning it handles the inrush and breaking of squirrel-cage motors up to that load. The AC/DC coil accepts 220-240 V control voltage, and the built-in auxiliary contacts are 2NO+2NC, enough for a feedback signal to the PLC and a holding circuit without an add-on block. ## Clearance and mounting Those are the spacing requirements for heat dissipation and arc quenching — pack them tighter and you risk nuisance tripping or accelerated contact wear. Side-by-side mounting is permitted, so multiple units can share a DIN-rail or screw-fixing row as long as the forward clearance is respected. ## What it is not This contactor is not safety-rated for switching off — it lacks the mirror-contact or mechanically linked features required for safety circuits per IEC 60947-4-1. It also carries no communication module; it is a standalone power switching device, not a fieldbus slice.","metaTitle":"3RT1276-6AP36-ZI41 SIRIUS Vacuum Contactor, 250kW/400V AC-3","metaDescription":"Siemens SIRIUS 3RT1276-6AP36-ZI41 vacuum contactor, 250 kW at 400 V AC-3, AC/DC coil 220-240 V, 2NO+2NC aux contacts, bar connections, size S12. Current lifecycle stage, available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Upwards":"10 mm","Forwards":"20 mm","Downwards":"10 mm","At The Side":"10 mm","lifecycle_stage":"current","Auxiliary Switch":"Yes","Product Brand Name":"SIRIUS","Product Designation":"Vacuum contactor","Side-By-Side Mounting":"Yes","Safety-Related Switching On":"No","safety-related switching OFF":"No","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Function Module For Communication":"No"}},"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=438117&mlfb=3RT1276-6AP36-ZI41","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1276-6AP36-ZI41/alternatives.json"},"ai":{"faq":[{"question":"What are the clearance requirements for this contactor?","answer":"Minimum clearances: 10 mm upwards, 20 mm forwards, 10 mm downwards, and 10 mm at the side (–). Side-by-side mounting is permitted."},{"question":"Where can I buy 3RT1276-6AP36-ZI41?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1276-6AP36-ZI41","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/3RT1276-6AP36-ZI41 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}}