{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA42-0AD0, switch disconnector in MCCB design, 4-pole, In=250 A, without overload or short-circuit protection, 3 auxiliary switches HQ, IP40 front, busbar connection.","salesMarkdown":"The Siemens 3VA1225-1AA42-0AD0 is a SENTRON switch disconnector in an MCCB (moulded-case circuit breaker) form factor, rated for 250 A continuous current (Iu) across 4 poles. It is designed for isolation and safe disconnection of loads under load or fault conditions, but it carries no overload or short-circuit protection elements — it is a pure disconnector, not a protective device. The 250 A rating means it can handle full-load current for motor feeders, distribution busbars, or incoming supplies up to that level without derating in standard ambient conditions. Rated insulation voltage (Ui) is 800 V, with maximum operational voltage of 690 V AC 50/60 Hz and 600 V DC. This covers common 400 V and 480 V industrial distribution systems with headroom, and supports DC bus applications up to 600 V. The 4-pole configuration allows simultaneous switching of three phases plus neutral, which is standard for TN-S or TN-C-S systems where neutral isolation is required. It accepts a busbar connection on the main current circuit, with front terminals for wiring access. An optional motor drive is available for remote operation. Dimensions are 158 mm height, 140 mm width, 70 mm depth. IP40 on the front protects against tools and solid objects larger than 1 mm; the rear and sides are open to the enclosure, so the overall panel IP rating governs. Busbar connection on the main circuit simplifies bus-stack assembly in distribution panels. ## Environmental limits and endurance Maximum power loss is 57 W at rated current, which should be factored into enclosure thermal calculations.","metaTitle":"Siemens 3VA1225-1AA42-0AD0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0AD0 switch disconnector, 250 A rated continuous current, 4-pole, IP40 front. Current lifecycle stage. Sourced to order against RFQ.","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":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"57 W","Auxiliary contact version":"3 auxiliary switches 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":"Without auxiliary release","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=569267&mlfb=3VA1225-1AA42-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AD0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-1AA42-0AD0 and how do I get a price?","answer":"This part 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 commitment."},{"question":"What is the difference between this switch disconnector and a 5SQ2670-2YA63?","answer":"The 5SQ2670-2YA63 is a 63 A 4-pole miniature circuit breaker (MCB) with C-curve overload and short-circuit protection, rated 3 kA breaking capacity per EN 60898. The 3VA1225-1AA42-0AD0 is a 250 A switch disconnector with no overcurrent protection — it is a different class of device for a different duty. They are not functional substitutes; the 3VA is sized for main feeders or large loads, the 5SQ for final subcircuits."},{"question":"What is the depth of the 3VA1225-1AA42-0AD0?","answer":"The depth is 70 mm. This is the dimension from the mounting surface to the front of the device, excluding any protruding busbar connections or auxiliary contact wiring."},{"question":"What compliance documentation is available for this part?","answer":"The part is a Siemens SENTRON product carrying standard CE marking for the European market. Specific RoHS, REACH, and UL documentation should be requested at quote time, as the evidence does not list individual certs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AD0","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/3VA1225-1AA42-0AD0 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}}