{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2018-2BG42-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2018-2BG42-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3RT2018-2BG42-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2018-2BG42-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2018-2BG42-0CC0, AC-3 contactor, 7.5 kW / 400 V, 1 NC, 125 VDC coil, 3-pole, size S00, spring-loaded terminals.","salesMarkdown":"The 3RT2018-2BG42-0CC0: The AC-3 rating of 7.5 kW at 400 V governs motor switching — that is the load a standard 400 V induction motor draws under starting and running conditions. The 125 VDC coil suits control circuits common in North American and some European DC-powered PLC or relay panels. Size S00 is the smallest SIRIUS frame; it occupies roughly 45 mm of DIN-rail width, which matters when packing multiple contactors into a compact panel. The single NC auxiliary is built in; if your circuit needs more than one auxiliary contact or an NO, you add a side-mount block from the 3RT29 series.","metaTitle":"Siemens 3RT2018-2BG42-0CC0 Contactor, AC-3 7.5kW/400V, S00","metaDescription":"Siemens SIRIUS 3RT2018-2BG42-0CC0 contactor, AC-3 rated 7.5kW at 400V, 1NC auxiliary, 125 VDC coil, size S00, spring-loaded terminals. Current lifecycle stage.","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=367689&mlfb=3RT2018-2BG42-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2018-2BG42-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What is the AC-3 rating and what does it mean?","answer":"The contactor is rated for 7.5 kW at 400 V in AC-3 duty, which covers starting and stopping of squirrel-cage induction motors. That is the rating to match against your motor nameplate for switching capability."},{"question":"What coil voltage does this contactor use?","answer":"The coil is rated for 125 VDC. Confirm your control circuit voltage matches this before specifying."},{"question":"What terminals does it have?","answer":"Spring-loaded (cage-clamp) terminals on both power and control circuits. No screw-torque check needed after installation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2018-2BG42-0CC0","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/3RT2018-2BG42-0CC0 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}}