{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9257-0HA20","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9257-0HA20","canonicalUrl":"https://aoctrl.com/siemens/3VA9257-0HA20","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9257-0HA20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON motorized operating mechanism (MO), 3VA9257-0HA20, 110-230V AC / 110-250V DC control supply, 250 VA, for 3VA1 250 frame.","salesMarkdown":"The Siemens SENTRON 3VA9257-0HA20 is a motorized operating mechanism (MO) accessory designed specifically for the 3VA1 250 molded case circuit breaker frame. It provides remote electrical switching capability — opening and closing the breaker via a control signal rather than manual handle operation. Rated control supply voltage covers 110-230 V AC at 60 Hz and 110-250 V DC, with an operating apparent power of 250 VA. Typical make and break times are both 0.9 s, giving predictable switching performance for automated load shedding or emergency shutdown sequences. The mechanism fits within a 132 mm depth, 105 mm width, and 75 mm height footprint — sized to mount directly onto the 3VA1 250 breaker without additional panel rework. ## Integration Notes The motor operator mounts directly onto the 3VA1 250 breaker, sharing its DIN-rail or screw-mounting footprint. The stripped length of 7 mm on the control wiring terminals matches standard ferrule sizing for panel wiring. Control voltage selection must match the available supply — the mechanism accepts both AC and DC, but the 250 VA inrush at make should be factored into the control transformer sizing if multiple operators are ganged on the same circuit.","metaTitle":"Siemens 3VA9257-0HA20 SENTRON Motor Operator, 110-230V AC","metaDescription":"Siemens SENTRON 3VA9257-0HA20 motorized operating mechanism for 3VA1 250. 110-230V AC/110-250V DC control supply, 250 VA. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"132 mm","Width":"105 mm","Height":"75 mm","Maximal":"250 V","Maximum":"80 °C","Minimum":"-40 °C","Stripped Length":"7 mm","lifecycle_stage":"current","Product Brand Name":"SENTRON","Make Time / Typical":"0.9 s","Product Designation":"Accessories","Break Time / Typical":"0.9 s","Design Of The Product":"Motorized operating mechanism (MO)","Operating Apparent Power":"250 VA","Rated control supply voltage Us at AC 60 Hz /minimum":"110 V","Rated control supply voltage Us at AC 60 Hz / maximum":"230 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$236.22","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/334be1513dcd029dedde4ea88db5f400.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=578122&mlfb=3VA9257-0HA20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9257-0HA20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA9257-0HA20 motor operator?","answer":"The 3VA9257-0HA20 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment."},{"question":"What are the key specifications for 3VA9257-0HA20?","answer":"The motor operator accepts 110-230 V AC at 60 Hz or 110-250 V DC control supply, draws 250 VA operating apparent power, and has typical make/break times of 0.9 s. It fits within 132 mm depth, 105 mm width, and 75 mm height, and operates from -40 °C to 80 °C."},{"question":"What breaker does the 3VA9257-0HA20 fit?","answer":"It is designed as an accessory for the Siemens SENTRON 3VA1 250 molded case circuit breaker frame. It mounts directly onto that breaker without additional hardware."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9257-0HA20","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/3VA9257-0HA20 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}}