{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA42-0JH0, IEC frame 250 switch disconnector, 4-pole, 250 A rated continuous current, shunt trip (STL) 110-127 V DC/AC, 2 auxiliary switches HQ + 1 trip alarm switch HQ, busbar connection front terminal.","salesMarkdown":"## Switch disconnector for isolation and switching duty The Siemens SENTRON 3VA1225-1AA42-0JH0 is a 4-pole switch disconnector in MCCB design, rated for 250 A continuous current (Iu) with a maximum rated operational voltage of 690 V AC 50/60 Hz and 600 V DC. It is built without overload or short-circuit protection — its job is safe isolation and load-break switching under rated conditions, not fault interruption. The shunt trip release (STL) operates on 110–127 V DC or AC 50/60 Hz, allowing remote tripping for emergency-stop or interlock circuits. ## What the ratings mean for panel fit The 250 A rated continuous current (Iu) is the maximum load this disconnector can carry continuously without exceeding its thermal limits — sized for feeder or large motor branch circuits. The 57 W maximum power loss at rated current must be factored into enclosure ventilation; in a sealed panel, that heat adds to the internal rise. The 70 mm depth and 140 mm width fit standard MCCB mounting footprints, and the busbar connection with front terminals simplifies bus-stack assembly or cable landing on the line and load sides. ## Auxiliary contacts and shunt trip configuration This variant ships with 2 auxiliary switches (HQ type) plus 1 trip alarm switch — three CO contacts total for status feedback to a PLC or indication panel. The shunt trip (STL) is factory-installed; there is no undervoltage release. A motor drive is available as an optional extension for remote motorized operation. The IP40 front protection means it is suited for enclosed panel mounting, not open washdown areas. ## Lifecycle and sourcing posture The lifecycle stage is listed as current — this is an active, in-production Siemens SENTRON catalog item. It is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time against an RFQ. No official successor or cross-reference is recorded, so the BOM line should specify this exact order code.","metaTitle":"Siemens 3VA1225-1AA42-0JH0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens SENTRON 3VA1225-1AA42-0JH0 switch disconnector, 250 A rated continuous current, 4-pole, shunt trip STL 110-127V DC/AC, 2 aux + 1 alarm switch. Current lifecycle. Quoted to","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":"Yes","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 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":"Shunt trip (STL)","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=569287&mlfb=3VA1225-1AA42-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0JH0/alternatives.json"},"ai":{"faq":[{"question":"What is the rated continuous current of 3VA1225-1AA42-0JH0?","answer":"The rated continuous current Iu is 250 A, which is the maximum load it can carry continuously without exceeding its thermal limits."},{"question":"What auxiliary contacts does this switch disconnector include?","answer":"It includes 2 auxiliary switches (HQ type) plus 1 trip alarm switch, providing 3 CO contacts total for status feedback."},{"question":"Where can I buy 3VA1225-1AA42-0JH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0JH0","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/3VA1225-1AA42-0JH0 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}}