{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA32-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA32-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA32-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA32-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA32-0AJ0, switch disconnector in MCCB design, 3-pole, 250 A rated continuous current Iu, 690 V AC / 500 V DC, front busbar connection, IP40 front.","salesMarkdown":"Rated continuous current Iu is 250 A, with a maximum AC operational voltage of 690 V (50/60 Hz) and a DC operational voltage of 500 V. The front-mounted busbar connection and IP40 front protection suit it for panel-mount distribution where a visible-break isolator is needed ahead of downstream loads. ## Thermal derating — what the 250 A rating actually delivers Above that, it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. If the panel internal ambient runs hot — say, above 50 °C — the usable current drops. That matters for an MRO planner or panel OEM sizing a disconnect for a densely packed enclosure; the 223 A floor at 70 °C is the real limit if the cabinet runs near its maximum operating temperature. The main circuit connection is via busbar at the front terminals, which keeps wiring clean in a multi-breaker lineup. No undervoltage release or voltage trigger is fitted; motor drive is available as an optional add-on.","metaTitle":"Siemens 3VA1225-1AA32-0AJ0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA32-0AJ0 MCCB-style switch disconnector, 250 A rated continuous current, 3-pole, 690 V AC / 500 V DC. Front busbar connection, IP40 front. Current product","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"105 mm","Height":"158 mm","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Limited To 1 S":"3 kA","Trip indicator":"Yes","Number of poles":"3","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 + 1 trip alarm switch 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":"500 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=569245&mlfb=3VA1225-1AA32-0AJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA32-0AJ0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1225-1AA32-0AJ0 used for?","answer":"It is a switch disconnector in MCCB form factor — used for isolating circuits up to 250 A at 690 V AC or 500 V DC, typically in panel-mounted distribution ahead of motor loads or downstream feeders."},{"question":"Where can I buy 3VA1225-1AA32-0AJ0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 3VA1225-1AA32-0AJ0?","answer":"Rated continuous current Iu 250 A, max AC operational voltage 690 V, max DC operational voltage 500 V, rated insulation voltage Ui 800 V. Thermal derating applies above 50 °C ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA32-0AJ0","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/3VA1225-1AA32-0AJ0 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}}