{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1215-0KA15-1BA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1215-0KA15-1BA4","canonicalUrl":"https://aoctrl.com/siemens/3RA1215-0KA15-1BA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1215-0KA15-1BA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S00 reversing combination starter, 3RA1215-0KA15-1BA4, 0.9-1.25 A, 24 VDC control, with MSP auxiliary and SPDT NO/NC contactor auxiliary.","salesMarkdown":"## What this reversing combination starter packs The Siemens 3RA1215-0KA15-1BA4 is a reversing combination starter in the SIRIUS S00 frame, rated 0.9-1.25 A with a 24 VDC control voltage. It integrates a reversing contactor pair, overload relay, and short-circuit protection into one DIN-rail or panel-mount unit — one part number instead of wiring three separate devices. The MSP auxiliary supplies a 1 SPDT NO/NC contactor auxiliary, and there is a second NO auxiliary contact built in. Mounts on DIN rail or direct to a panel backplate. The S00 frame is the smallest SIRIUS footprint, so it fits tight control cabinets.","metaTitle":"Siemens 3RA1215-0KA15-1BA4 Reversing Combination Starter","metaDescription":"Siemens 3RA1215-0KA15-1BA4 reversing combination starter, SIRIUS S00 frame, 0.9-1.25A, 24 VDC coil, MSP aux + SPDT aux. Current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"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=239925&mlfb=3RA1215-0KA15-1BA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1215-0KA15-1BA4/alternatives.json"},"ai":{"faq":[{"question":"Is the 3RA1215-0KA15-1BA4 a reversing starter or non-reversing?","answer":"It is a reversing combination starter. The description explicitly states 'REVERSING' — it contains two contactors interlocked for forward/reverse motor control, plus overload and short-circuit protection in one housing."},{"question":"What are the specifications for 3RA1215-0KA15-1BA4 (current rating, control voltage)?","answer":"The current setting range is 0.9-1.25 A, and the control voltage is 24 VDC. It includes an MSP auxiliary with 1 SPDT NO/NC contact and a separate NO auxiliary contact."},{"question":"What is the difference between 3RA1215-0KA15-1BA4 and 3RA1215-0KA15-1BA0?","answer":"The difference is in the auxiliary contact configuration. The -1BA4 carries an MSP auxiliary (1 SPDT NO/NC) plus a separate NO auxiliary contact, while the -1BA0 variant has a different auxiliary contact arrangement. Both are S00 frame reversing starters at the same current range and control voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1215-0KA15-1BA4","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/3RA1215-0KA15-1BA4 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}}