{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA32-0BC0, switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, with undervoltage release 24V DC, 2 auxiliary switches HQ, busbar front terminals.","salesMarkdown":"## Switch Disconnector for Isolation Duty The 125 A Iu rating on the 160 A frame means it handles continuous load up to that current, with headroom in the frame for fault-withstand capability. The 2 kA limited-time rating (at 1 s and 0.5 s) confirms it can survive brief fault currents during upstream breaker coordination, but it does not self-interrupt a fault. ## Undervoltage Release and Auxiliaries The front-terminal busbar connection mates with SENTRON busbar systems for clean, low-profile panel wiring — no lug terminals to torque, which speeds assembly on a DIN-rail or mounting-plate layout. The 70 mm depth and 76.2 mm width match the 3VA MCCB footprint, so it drops into a panel designed for a 3VA breaker without re-spacing the gland plate.","metaTitle":"Siemens 3VA1112-1AA32-0BC0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens SENTRON 3VA1112-1AA32-0BC0 switch disconnector, 125 A rated continuous current, 3-pole, with undervoltage release 24V DC and 2 auxiliary switches HQ. Current lifecycle stag","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":"Yes","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"38 W","Auxiliary contact version":"2 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":"Undervoltage release (UVR)","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":"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=502346&mlfb=3VA1112-1AA32-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0BC0/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 3VA1112-1AA32-0BC0 and the 3VA1112-5EF32-0CA0 circuit breaker?","answer":"The 3VA1112-1AA32-0BC0 is a switch disconnector with no overcurrent protection — it isolates load but does not trip on overload or short circuit. The 3VA1112-5EF32-0CA0 is a full molded case circuit breaker (MCCB) with a TM240 thermal-magnetic release, rated for line protection up to 125 A with interrupting ratings up to 187 kA at 240 V. The mechanical dimensions (70×76.2×130 mm) and frame size are identical, so the disconnector can replace the MCCB in a panel only if upstream protection already covers the fault duty — never as a drop-in substitute for a breaker that provides branch-circuit pr"},{"question":"Where can I buy 3VA1112-1AA32-0BC0 and how is it quoted?","answer":"This part is sourced to order through independent industrial-automation distribution against an RFQ. Availability and current pricing are confirmed at quote time — no stock or price is published here. Submit an RFQ for a firm quote with lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0BC0","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/3VA1112-1AA32-0BC0 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}}