{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2015-1BG42-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2015-1BG42-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3RT2015-1BG42-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1BG42-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2015-1BG42-0CC0, AC-3 contactor, 3 kW at 400 V, 1 NC auxiliary, DC 125 V coil, size S00, screw terminals.","salesMarkdown":"## Contactor for motor switching — SIRIUS 3RT2 series The Siemens 3RT2015-1BG42-0CC0 is a 3-pole contactor from the SIRIUS 3RT2 series, rated AC-3 for motor switching at 3 kW on a 400 V three-phase supply. The coil is DC 125 V, and the built-in auxiliary is 1 NC. The size S00 frame keeps the panel footprint compact — roughly the width of a 45 mm terminal block — and the screw terminals accept standard power and control wiring without special tooling. ## What the AC-3 rating means for your motor load AC-3 duty covers starting and switching off squirrel-cage motors under load. The DC 125 V coil is worth noting: it draws a steady holding current with no AC hum, but the coil suppression circuit must match the DC polarity. Verify the free-wheel diode or varistor orientation on the control board before wiring. ## Panel integration — size S00 screw terminals The S00 frame snaps onto a DIN rail (EN 60715) and occupies a single 45 mm width unit. Screw terminals accept 1.5 to 4 mm² stranded or solid wire. The 1 NC auxiliary is factory-fitted on the left side; if you need additional auxiliary contacts, the 3RT2 series accepts add-on blocks that clip onto the front without increasing the panel width. The DC coil draws about 2.5 W holding power — negligible for the control transformer budget.","metaTitle":"Siemens 3RT2015-1BG42-0CC0 Contactor, AC-3 3kW/400V, DC 125V","metaDescription":"Siemens SIRIUS 3RT2015-1BG42-0CC0 contactor, AC-3 rated 3 kW at 400 V, 1 NC auxiliary contact, DC 125 V coil, size S00, screw terminals. Current lifecycle stage: active production.","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=132051&mlfb=3RT2015-1BG42-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2015-1BG42-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What is the AC-3 rating and what motor can it switch?","answer":"The AC-3 rating is 3 kW at 400 V. That covers a 4 HP (3 kW) induction motor on a 400 V three-phase supply — typical for small pumps, fans, and conveyor drives. The DC 125 V coil requires correct polarity on the control supply."},{"question":"What auxiliary contact configuration does this contactor have?","answer":"It comes with one normally-closed (1 NC) auxiliary contact factory-fitted. Additional auxiliary contact blocks can be added to the front of the S00 frame without increasing the panel width."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2015-1BG42-0CC0","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/3RT2015-1BG42-0CC0 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}}