{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 switch disconnector, IEC frame 250, 4-pole SD100, In=250 A, without overload or short-circuit protection, busbar connection, 2 auxiliary switches HP, IP40 front.","salesMarkdown":"It's built in an MCCB-style housing but functions as a disconnect, not a breaker — meaning it provides no overload or short-circuit protection on its own. That's the key distinction: this part is for isolating a circuit under load, not protecting it. Rated continuous current Iu of 250 A is the headline number — this switch disconnector carries that current continuously without exceeding temperature limits. The max rated operational voltage is 690 V AC 50/60 Hz and 600 V DC, so it's suited for 400 V and 480 V distribution panels and for DC bus applications up to 600 V. The power loss at rated current maxes out at 57 W, which matters for thermal management inside a closed panel — that's heat that needs to be ventilated or accounted for in the enclosure sizing. Mechanical endurance is 15,000 operations, so it's built for regular switching duty, not just infrequent isolation. ## Deployment context This switch disconnector mounts in a panel with busbar connection for the main circuit — the terminals are arranged on the front. The 70 mm depth, 140 mm width, and 158 mm height mean it fits standard MCCB cutouts in the 3VA1 frame family. A motor drive can be added as an optional extension for remote operation.","metaTitle":"Siemens 3VA1225-1AA42-0AB0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0AB0 4-pole switch disconnector, 250 A rated continuous current, 690 V AC. Current lifecycle stage. Quoted 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":"2 auxiliary switches HP","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":"2","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=569265&mlfb=3VA1225-1AA42-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-1AA42-0AB0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial automation distribution. Availability and current pricing are confirmed at the time of quotation."},{"question":"What is the difference between 3VA1225-1AA42-0AB0 and a molded case circuit breaker?","answer":"This is a switch disconnector, not a circuit breaker — it provides no overload or short-circuit protection. It isolates a circuit under load but relies on upstream protection devices for fault interruption."},{"question":"What are the key ratings for 3VA1225-1AA42-0AB0?","answer":"Rated continuous current Iu is 250 A. Max operational voltage is 690 V AC 50/60 Hz and 600 V DC. Mechanical endurance is 15,000 operations. Power loss is 57 W max."},{"question":"Does 3VA1225-1AA42-0AB0 include auxiliary contacts?","answer":"Yes, it comes with 2 auxiliary switches (HP version) for status signaling. These are built in and don't require a separate add-on module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AB0","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/3VA1225-1AA42-0AB0 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}}