{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA36-0AF0, IEC frame 160 switch disconnector, 3-pole SD100, 125 A rated continuous current, without overload or short-circuit protection, front terminal connection, 1 auxiliary switch HQ + 1 trip alarm switch HQ.","salesMarkdown":"The Siemens 3VA1112-1AA36-0AF0 is a SENTRON switch disconnector in the 3VA1 IEC frame 160 platform — a three-pole device rated for 125 A continuous current (Iu) that provides visible isolation of a circuit but carries no overload or short-circuit protection elements. It is designed strictly as a load-break disconnect for maintenance and safety isolation, not as a circuit breaker. Rated continuous current Iu is 125 A — this is the maximum current the disconnect can carry continuously without exceeding its thermal limits. The maximum power loss at that load is 38 W, so panel ventilation matters if multiple units are ganged. Rated insulation voltage Ui is 800 V, and the maximum operational voltage is 690 V AC (50/60 Hz) or 500 V DC. Short-time withstand current is rated at 2 kA for both 0.5 s and 1 s durations. This tells you the disconnect can survive a fault current up to 2 kA for up to one second without welding its contacts — but it will not interrupt that fault. Upstream protection (a fuse or circuit breaker) must clear the fault before the disconnect's thermal limit is reached. The mechanical endurance is 15,000 operating cycles, which is typical for a panel disconnect that sees daily switching but not continuous motor starting. The 3VA1112-1AA36-0AF0 mounts on a DIN rail via the standard 3VA frame footprint: 70 mm deep, 76.2 mm wide (3 inches), 130 mm tall. Front terminal connection for the main circuit — clamp-type terminals accept copper or aluminum conductors. The auxiliary contact block is factory-integrated, so no add-on module occupies adjacent DIN space. An optional motor drive can be added for remote switching (product extension optional). The closest functional peer in the same frame is the 3VA1110-5EF32-0AM0, which is a full molded-case circuit breaker with thermal-magnetic overcurrent protection (TM240), rated 100 A at 40 °C, and carries a much higher interrupting capacity (187 kA at 240 V AC). By contrast, the 3VA1112-1AA36-0AF0 is a switch disconnector only — no overcurrent trip, no fault interruption capability, and a lower short-time withstand (2 kA). The physical footprint is identical (same 70×76.2×130 mm envelope), so a panel designed for the breaker can accept the disconnect without rewiring the bus bars or DIN-rail position. The decision between them is purely functional: if the circuit already has upstream overcurrent protection and you only need a local disconnect, the 3VA1112-1AA36-0AF0 is the correct choice; if you need integrated branch-circuit protection, use the 3VA1110-5EF32-0AM0.","metaTitle":"Siemens 3VA1112-1AA36-0AF0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens 3VA1112-1AA36-0AF0 SENTRON switch disconnector, IEC frame 160, 3-pole, 125 A rated continuous current, no overload or short-circuit protection. Quoted 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":"Yes","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":"1 auxiliary switches + 1 trip alarm switch 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":"2","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Terminal 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=215024&mlfb=3VA1112-1AA36-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-1AA36-0AF0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source to 3VA1112-1AA36-0AF0?","answer":"The closest peer is the 3VA1110-5EF32-0AM0, a full molded-case circuit breaker in the same frame. It shares the same 70×76.2×130 mm footprint but adds thermal-magnetic overcurrent protection and much higher interrupting capacity. For a pure disconnect application, the 3VA1112-1AA36-0AF0 is the correct part; the breaker is not a direct functional substitute."},{"question":"Will 3VA1112-1AA36-0AF0 drop into a panel specified for 3VA1110-5EF32-0AM0?","answer":"Yes — both parts share the same 70×76.2×130 mm footprint and front-terminal arrangement, so the disconnect fits the same DIN-rail position and bus-bar layout without rewiring."},{"question":"What compliance documentation does Siemens provide for 3VA1112-1AA36-0AF0?","answer":"The part carries the SENTRON brand and is designed to IEC standards (reference code Q per DIN EN 81346-2). Standard Siemens documentation includes a declaration of conformity and, where applicable, UL/CSA certifications. Specific documentation is available on request with an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AF0","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/3VA1112-1AA36-0AF0 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}}