{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 IEC frame 160, switch disconnector in MCCB design, 3-pole, In=125 A, 690 V AC / 500 V DC, 3 auxiliary switches HQ, busbar connection front terminal.","salesMarkdown":"## Switch disconnector, not a breaker — what that means on the line The Siemens SENTRON 3VA1112-1AA32-0AD0 is a 3-pole switch disconnector in an MCCB-style housing, rated for 125 A continuous current (Iu) at up to 690 V AC or 500 V DC. It is designed for isolation and switching duty, not overcurrent protection — the description explicitly states 'without overload protection, without short-circuit protection'. This matters for BOM fit: if your panel relies on the device for branch-circuit protection, this is the wrong part; if you need a load-break disconnect with visible isolation and auxiliary signaling, it is exactly right. The 125 A rating covers the IEC frame 160 footprint, so it handles motor loads, resistive heating banks, or transformer primaries up to that current. The 690 V AC rating covers 400 V line-to-line systems with headroom; the 500 V DC rating suits battery banks or DC bus applications within that voltage ceiling. ## Physical fit and auxiliary wiring The front-terminal busbar connection means incoming and outgoing conductors land on the front face. Three auxiliary switches (HQ type, 3 CO contacts) are built in. The part accepts an optional motor drive for remote switching, and the auxiliary release slot is unused on this variant (no undervoltage or shunt trip fitted). Maximum power loss is 38 W at full rated current.","metaTitle":"Siemens 3VA1112-1AA32-0AD0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens SENTRON 3VA1112-1AA32-0AD0 switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, 690 V AC / 500 V DC. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Limited To 1 S":"2 kA","Trip indicator":"No","Number of poles":"3","Product version":"in MCCB design","Voltage trigger":"No","lifecycle_stage":"current","Limited To 0.5 S":"2 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":"38 W","Auxiliary contact version":"3 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Rated continuous current Iu":"125 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=524187&mlfb=3VA1112-1AA32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-1AA32-0AD0 used for?","answer":"It is a switch disconnector rated 125 A, 690 V AC / 500 V DC, designed for load-break isolation and switching in MCCB-style panels. It does not provide overload or short-circuit protection — use it where a fused disconnect or upstream breaker handles fault interruption."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0AD0","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/3VA1112-1AA32-0AD0 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}}