{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 IEC frame 250, 4-pole switch disconnector, In=250 A, no overload or short-circuit protection, undervoltage release 24 V DC, 2 aux switches + 1 trip alarm switch HQ, busbar connection front terminal.","salesMarkdown":"The integrated undervoltage release (UVR) operates on 24 V DC — if the control voltage drops, the disconnector trips open, which is a common safety interlock for motor feeder circuits or emergency-stop chains. ## Panel Fit & Integration Dimensions are 140 mm wide by 158 mm tall by 70 mm deep — the 70 mm depth is notably shallow for a 250 A rated device, which helps in tight enclosure layouts where gland-plate clearance is limited. Front-face protection is IP40, so the front panel is touch-safe against tools and fingers, but the device is not sealed against washdown — install in a clean, dry cabinet or add an IP-rated enclosure. Main circuit connection is busbar-type via front terminals, which suits panel builders who prefer busbar stacking over cable lugs; an optional motor drive can be added for remote switching. ## What This Part Is Not Because it has no overcurrent release (no thermal or magnetic trip unit), this is strictly a switch disconnector — do not specify it where branch-circuit protection is required. It is intended for isolation, maintenance disconnect, or load-break switching under rated current. Rated short-time withstand is 3 kA for both 0.5 s and 1 s — enough for coordination with upstream fuses or a molded-case breaker, but not for high-fault applications above that threshold.","metaTitle":"Siemens SENTRON 3VA1225-1AA42-0BH0 Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0BH0 switch disconnector, 250 A rated continuous current, 4-pole, 690 V AC / 600 V DC. Current lifecycle stage. Available to order. Request a quote.","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":"Yes","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":"2 auxiliary switches + 1 trip alarm switch HQ","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":"3","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=569275&mlfb=3VA1225-1AA42-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1225-1AA42-0BH0 drop into a panel specified around 5SQ2670-2YA16 without rewiring?","answer":"No — the 5SQ2670-2YA16 is a 16 A miniature circuit breaker (MCB) with a completely different footprint, current rating, and protection function. The 3VA1225-1AA42-0BH0 is a 250 A switch disconnector in a larger frame; it will not fit the same DIN-rail space or busbar arrangement without significant rework."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0BH0","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/3VA1225-1AA42-0BH0 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}}