{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 switch disconnector, IEC frame 250, 4-pole, In=250 A, without overload or short-circuit protection, busbar connection, 2 auxiliary switches HP + 1 trip alarm switch HP, IP40 front.","salesMarkdown":"The front terminal accepts busbar connection, typical for panel main-switch or distribution positions. The trip indicator flags a mechanical fault, though there's no undervoltage release or communication module onboard. Width 140 mm, height 158 mm, depth 70 mm — that's a standard 3VA1 frame footprint. The busbar connection on the front terminal means the busbars run across the front face; plan your gland plate and wireway clearance accordingly. ## What it is not — and why that matters This is a switch disconnector, not a circuit breaker. It has no overload protection (no thermal/magnetic trip) and no short-circuit protection — the 3 kA limited-time ratings (1 s and 0.5 s) are short-time withstand, not breaking capacity. It isolates a load under no-fault conditions only. If your BOM needs overcurrent protection, you need a separate MCCB or fuse upstream. ## Ambient and storage limits The 70 °C upper operating limit is above typical panel ambient, but derate for continuous full-load current at the high end per Siemens thermal curves. Latching endurance is 15,000 operations — adequate for a main disconnect cycled a few times per shift, not for a high-frequency switching role.","metaTitle":"Siemens SENTRON 3VA1225-1AA42-0AJ0 Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0AJ0 switch disconnector, 250 A rated continuous current, 4-pole, 690 V AC / 600 V DC. No overload or short-circuit protection. Active production. Quo","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":"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":"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=569272&mlfb=3VA1225-1AA42-0AJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0AJ0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0AJ0","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/3VA1225-1AA42-0AJ0 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}}