{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA42-0DA0 switch disconnector, IEC frame 250, 4-pole, In=250 A, without overload or short-circuit protection, with undervoltage release (UVR) 208-230 V AC 50/60 Hz, front busbar connection.","salesMarkdown":"The Siemens 3VA1225-1AA42-0DA0 is a SENTRON switch disconnector in an MCCB-style housing — IEC frame 250, 4-pole, rated for 250 A continuous current (Iu). It is a pure disconnector: no overload or short-circuit protection inside. The 250 A rating means it can carry that current continuously in a 40 °C ambient; the 4-pole design handles three-phase plus neutral or a second isolated pole, common in main incomer or generator applications. Rated insulation voltage is 800 V, and it can switch up to 690 V AC 50/60 Hz or 600 V DC — so it fits 400/480 V panels with headroom, and DC bus applications up to 600 V. The built-in undervoltage release (UVR) is wired for 208-230 V AC 50/60 Hz — if control voltage drops, the disconnector trips open, which is a standard safety requirement for machine main switches to prevent auto-restart after a power loss. ## Deployment context — panel integration and environment Mounts in a standard panel enclosure; the front terminal arrangement accepts busbar connection for the main circuit, so it's designed for fixed-mount distribution boards rather than plug-in bases. Dimensions are 140 mm wide, 158 mm high, 70 mm deep — a 4-pole frame 250 device. IP40 on the front means it is splash-protected from the front. It carries no auxiliary contacts as standard (without auxiliary contact version), but the product extension allows optional motor drive — so you can add remote switching capability later if needed.","metaTitle":"Siemens 3VA1225-1AA42-0DA0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0DA0 switch disconnector, 250 A rated continuous current, 4-pole, 690 V AC / 600 V DC. Undervoltage release 208-230 V AC. Current production. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","Limited To 1 S":"3 kA","Trip indicator":"No","Number of poles":"4","Product version":"in MCCB design","Voltage trigger":"No","lifecycle_stage":"current","Limited To 0.5 S":"3 kA","Product brand name":"SENTRON","Product designation":"Switch disconnector","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"57 W","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"250 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Number of CO contacts / for auxiliary contacts":"0","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"busbar connection","Arrangement of electrical connectors / for main current circuit":"Front terminal"}},"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=569279&mlfb=3VA1225-1AA42-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0DA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0DA0","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/3VA1225-1AA42-0DA0 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}}