{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1215-0KA15-1BB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1215-0KA15-1BB4","canonicalUrl":"https://aoctrl.com/siemens/3RA1215-0KA15-1BB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1215-0KA15-1BB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA1215-0KA15-1BB4, combination reversing starter, IEC, DIN/panel mount, frame size S00, 0.9-1.25 A, 110 VDC control voltage, MSP auxiliary 1 SPDT NO/NC, contactor auxiliary 2 NO.","salesMarkdown":"The Siemens 3RA1215-0KA15-1BB4 is a combination reversing starter in the SIRIUS family, frame size S00. It integrates a reversing contactor pair, overload relay, and auxiliary contacts into one DIN-rail or panel-mount unit. Rated for 0.9-1.25 A with a 110 VDC control voltage, it handles reversing motor loads — conveyors, hoists, or any application needing forward/reverse switching — within that current band. The built-in MSP auxiliary provides one SPDT NO/NC contact, and the contactor auxiliary adds a second NO contact for status feedback or interlocking. ## Frame size and integration At 0.9-1.25 A, it fits light-duty reversing applications where panel space is tight — think small conveyors, gate operators, or pump direction control. The 110 VDC coil matches control systems using DC supplies; verify the coil suppression polarity when wiring inductive loads.","metaTitle":"Siemens 3RA1215-0KA15-1BB4 Reversing Starter, S00, 0.9-1.25A","metaDescription":"Siemens 3RA1215-0KA15-1BB4 combination reversing starter, SIRIUS S00 frame, 0.9-1.25 A, 110 VDC control. Current lifecycle stage. Sourced to order against RFQ.","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=160515&mlfb=3RA1215-0KA15-1BB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1215-0KA15-1BB4/alternatives.json"},"ai":{"faq":[{"question":"What is the frame size of the 3RA1215-0KA15-1BB4?","answer":"Frame size S00 — the smallest SIRIUS frame, designed for compact DIN-rail or panel-mount installations."},{"question":"What are the specifications of the 3RA1215-0KA15-1BB4?","answer":"It is a combination reversing starter rated 0.9-1.25 A with a 110 VDC control voltage. It includes an MSP auxiliary with one SPDT NO/NC contact and a contactor auxiliary with one NO contact."},{"question":"What is the difference between a reversing and non-reversing starter?","answer":"A reversing starter contains two contactors (one for forward, one for reverse) mechanically and electrically interlocked so both cannot close simultaneously. A non-reversing starter uses a single contactor for one direction only. The 3RA1215-0KA15-1BB4 is a reversing starter, so it can switch motor direction without external interlocking."},{"question":"How to wire the 3RA1215-0KA15-1BB4 reversing starter?","answer":"Wire the 110 VDC control voltage to the coil terminals. Connect the motor to the load side of the reversing contactor pair. The MSP auxiliary (1 SPDT NO/NC) and contactor auxiliary (1 NO) provide feedback or interlock signals. Follow the wiring diagram on the unit label for the specific terminal assignments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1215-0KA15-1BB4","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/3RA1215-0KA15-1BB4 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}}