{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA36-0KC0, switch disconnector in MCCB design, 3-pole, 125 A, shunt trip (STL) 220-250 V DC / 208-277 V AC, 2 auxiliary switches HQ, front terminal connection.","salesMarkdown":"It is a straight disconnect switch with no overcurrent or short-circuit protection built in; the description explicitly states 'without overload protection' and 'without short-circuit protection.' That means it is intended for isolation and switching duty, not for circuit protection. Rated insulation voltage Ui is 800 V, and the maximum operational voltage is 690 V AC (50/60 Hz) or 500 V DC. That covers standard 400 V three-phase panels and most 480 V industrial systems with headroom. The shunt trip release (STL) is wired for 220-250 V DC or 208-277 V AC — a common trip coil voltage range for remote emergency-stop or undervoltage-trip schemes. The front-terminal connection for the main circuit uses clamp-type terminals, which accept solid or stranded copper conductors. ## What the shunt trip and aux contacts mean for your circuit The shunt trip (STL) is a voltage-triggered release that mechanically trips the switch when voltage is applied to its coil — used for remote emergency-off, undervoltage protection, or interlocking with another device. The coil range (220-250 V DC / 208-277 V AC) is common for industrial control voltages; verify your control circuit matches before wiring. The two auxiliary switches (HQ) are rated for the same voltage class and provide status feedback — one normally-open and one normally-closed contact per switch, giving you two CO pairs total. That is enough to signal 'open' and 'closed' to a PLC and a local indicator without adding an external aux block.","metaTitle":"Siemens 3VA1112-1AA36-0KC0 SENTRON Switch Disconnector, 125A","metaDescription":"Siemens SENTRON 3VA1112-1AA36-0KC0 switch disconnector, 125A rated continuous current, 3-pole, with shunt trip 220-250V DC / 208-277V AC. Current production. Available 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":"Yes","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":"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":"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":"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=515988&mlfb=3VA1112-1AA36-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0KC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1112-1AA36-0KC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; current pricing and availability are confirmed at quote time."},{"question":"Will 3VA1112-1AA36-0KC0 drop into a panel specified around 3VA1010-2ED32-0JA0?","answer":"Yes, the physical dimensions are identical (130 x 76.2 x 70 mm), the same frame size, and the same front-terminal connection pattern. It will mount on the same DIN rail or backplate without rewiring the bus bars or conductors, provided the current rating (125 A vs 100 A) and the absence of overcurrent protection are acceptable for the circuit design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0KC0","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/3VA1112-1AA36-0KC0 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}}