{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-1AA42-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-1AA42-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-1AA42-0HC0, switch disconnector in MCCB design, 4-pole, In=250 A, no overload or short-circuit protection, with shunt trip STL 12-30V DC / 24V AC, 2 auxiliary switches HQ, busbar connection front terminal.","salesMarkdown":"The Siemens 3VA1225-1AA42-0HC0 is a SENTRON switch disconnector in MCCB design, rated for 250 A continuous current (Iu) across 4 poles. It carries no overload or short-circuit protection — this is a pure disconnect, not a breaker. The front terminal accepts busbar connections, so this lands in a panel where the main bus feeds directly through the disconnect to downstream loads — typical for a machine infeed or sub-distribution board. The 250 A rated continuous current (Iu) sets the maximum load this disconnect can carry without derating. At 57 W max power loss, the heat it dumps into the enclosure is manageable in a ventilated panel, but a sealed stainless box at 70 °C ambient will need a thermal check — the operating range tops at 70 °C. That matches its role as a load-break switch, not a circuit breaker. IP40 on the front means it keeps out tools and wires larger than 1 mm, but it is not sealed against washdown. This is a dry-panel part — indoor, switchgear or MCC enclosure. The front busbar connection means it bolts directly to the horizontal bus in a distribution panel or switchboard — no wire lugs needed. The shunt trip coil and auxiliary contacts are wired separately via the front terminal block. For high-duty switching, you would add a contactor downstream.","metaTitle":"Siemens 3VA1225-1AA42-0HC0 SENTRON Switch Disconnector, 250","metaDescription":"Siemens 3VA1225-1AA42-0HC0 SENTRON switch disconnector, 250 A rated continuous current, 4-pole, with shunt trip STL 12-30V DC / 24V AC, 2 HQ auxiliary switches. Current lifecycle s","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":"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 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":"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=569283&mlfb=3VA1225-1AA42-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-1AA42-0HC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-1AA42-0HC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 3VA1225-1AA42-0HC0?","answer":"The SENTRON series carries IEC certification per the product standard. Specific RoHS, REACH, and UL documentation should be requested at quote time — the evidence does not list individual certs for this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-1AA42-0HC0","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/3VA1225-1AA42-0HC0 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}}