{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA36-0AH0, switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, 70 mm depth, front terminal connection, with 2 auxiliary switches + 1 trip alarm switch HQ.","salesMarkdown":"The Siemens 3VA1112-1AA36-0AH0 is a SENTRON switch disconnector in a molded-case circuit breaker (MCCB) form factor, rated for 125 A continuous current (Iu) on a 160 A frame. It provides visible isolation for a circuit — it switches load current on and off, but it does not include overload or short-circuit protection. That makes it a pure disconnect for maintenance isolation or load switching where upstream protection already exists. Rated for 690 V AC and 500 V DC, it handles both line and DC bus applications. The 3-pole unit uses front terminal connections. The 125 A continuous rating (Iu) at 800 V insulation voltage (Ui) means this disconnect is sized for a 125 A feeder or motor branch circuit. The short-time withstand ratings — 2 kA for 1 s and 2 kA for 0.5 s — tell you it can pass fault current long enough for an upstream breaker to clear, but it is not rated to interrupt a fault itself. That is consistent with its role as a switch disconnector, not a circuit breaker. The trip alarm switch signals when the disconnect has been opened — useful for remote status monitoring on a motor control center or distribution panel. Maximum power loss is 38 W at rated current, which matters for thermal management inside a sealed enclosure. That is the same 3-pole MCCB footprint as the rest of the 3VA1 160 A frame — drops into the same DIN-rail or screw-mount panel cutout as a 3VA1 circuit breaker. Front terminals accept lug or clamp connections (clamp connection per the description). The disconnect accepts an optional motor drive (product extension optional), so it can be remotely operated for applications like automated load shedding or remote disconnect.","metaTitle":"Siemens 3VA1112-1AA36-0AH0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens SENTRON 3VA1112-1AA36-0AH0 switch disconnector, 125 A rated continuous current, 3-pole, IP40 front. Current lifecycle stage. Sourced to order against RFQ.","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":"2 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":"3","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=323779&mlfb=3VA1112-1AA36-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0AH0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1112-1AA36-0AH0 used for?","answer":"It is a switch disconnector in MCCB design — used to manually isolate a 125 A circuit for maintenance, with no overload or short-circuit protection. It provides visible isolation and remote status via its auxiliary contacts."},{"question":"Will 3VA1112-1AA36-0AH0 drop into a panel specified for 3VA1110-5EF32-0AM0?","answer":"Yes — both share the same 70 mm depth, 76.2 mm width, and 130 mm height, and both use front terminal connections. The 3VA1112-1AA36-0AH0 is a switch disconnector (no overcurrent protection), while the 3VA1110-5EF32-0AM0 is a molded case circuit breaker with TM240 trip unit. Same mechanical footprint, different function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0AH0","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/3VA1112-1AA36-0AH0 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}}