{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA1125-0DA23-1BW4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA1125-0DA23-1BW4","canonicalUrl":"https://aoctrl.com/siemens/3RA1125-0DA23-1BW4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA1125-0DA23-1BW4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA1125-0DA23-1BW4, nonreversing combination starter, frame size S0, 0.22-0.32 A, 24 VAC control voltage, FastBus mount, with MSP auxiliary contact and front-mount auxiliary contact.","salesMarkdown":"The Siemens 3RA1125-0DA23-1BW4 is a nonreversing combination starter in the SIRIUS S0 frame, rated for 0.22-0.32 A with a 24 VAC control voltage. It integrates a contactor, overload relay, and short-circuit protection into one FastBus-mount unit, saving panel space over discrete components. The MSP auxiliary contact provides one SPDT NO/NC set, and a separate front-mount NO auxiliary contact is included for status feedback or interlocking. The 0.22-0.32 A current range sets the motor full-load current (FLC) it can protect — this is not a contactor-only rating; the overload relay inside is factory-set or adjustable to that band. A 24 VAC control coil means the starter pulls in on a 24 VAC signal, common in older or transformer-isolated control circuits; verify your control transformer supplies clean 24 VAC at the coil's inrush, not just holding current. Frame size S0 sets the physical footprint and the maximum motor current the overload block can handle. UL File E156943 in Vol.1 Sec.14 confirms the starter carries UL listing for the US market, meaning it meets UL 508A requirements for industrial control panels. If your panel requires CSA or CE marks, verify those are also on the nameplate — the description only explicitly states UL. Combination starters like this one are the standard way to switch and protect small three-phase motors in industrial control panels — conveyors, pumps, fans, and compressors up to the rated current. The nonreversing variant handles one direction of rotation; for reversing applications you would need two contactors or a dedicated reversing starter. This is an active, standard-catalog Siemens SIRIUS part. Submit an RFQ for the latest delivery window.","metaTitle":"Siemens 3RA1125-0DA23-1BW4 Combination Starter, 0.22-0.32A","metaDescription":"Siemens 3RA1125-0DA23-1BW4 nonreversing combination starter, SIRIUS S0 frame, 0.22-0.32A, 24 VAC 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=235252&mlfb=3RA1125-0DA23-1BW4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA1125-0DA23-1BW4/alternatives.json"},"ai":{"faq":[{"question":"How to wire Siemens 3RA1125-0DA23-1BW4 combination starter?","answer":"The FastBus mount carries the three-phase power bus; the control circuit connects to the 24 VAC coil terminals. The MSP auxiliary contact (SPDT NO/NC) and the front-mount NO contact are wired separately for status feedback. Follow the wiring diagram in the datasheet for your specific control voltage and interlock scheme."},{"question":"Where can I buy 3RA1125-0DA23-1BW4 available via RFQ confirmation?","answer":"This part is sourced to order against an RFQ. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA1125-0DA23-1BW4","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/3RA1125-0DA23-1BW4 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}}