{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA36-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA36-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 series, switch disconnector in MCCB design, 3-pole, 125 A rated continuous current, IEC frame 160, front terminal connection, undervoltage release 208-230 V AC 50/60 Hz, 2 auxiliary switches + 1 trip alarm switch HQ.","salesMarkdown":"The Siemens 3VA1112-1AA36-0DH0 is a SENTRON 3VA1 switch disconnector in an MCCB-style housing — IEC frame 160, three poles, rated for 125 A continuous current (Iu). It is a pure disconnect: no overload or short-circuit protection built in, so it functions as a manual load-break switch for isolation and switching of circuits where the upstream protection handles the fault clearing. ## Undervoltage Release and Auxiliary Contacts No leading contact on the UVR, so the coil must be energized before the main contacts close. Auxiliary contact configuration is 2 form-C auxiliary switches plus 1 form-C trip alarm switch, all HQ (high-utilization) rated. The trip alarm switch changes state only on a UVR-triggered opening, not on manual operation — useful for distinguishing a fault trip from a normal shutdown. Footprint is 76.2 mm wide (3-inch grid compatible), 130 mm tall, 70 mm deep — same mechanical envelope as the 3VA1 MCCB line. The front terminals are accessible with the panel door closed, so wiring checks don't require removing the device.","metaTitle":"Siemens 3VA1112-1AA36-0DH0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens 3VA1112-1AA36-0DH0 SENTRON switch disconnector, 125 A, 3-pole, IEC frame 160, with undervoltage release 208-230 V AC. Current lifecycle stage. 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":"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":"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 + 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":"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":"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=380923&mlfb=3VA1112-1AA36-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA36-0DH0/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 3VA1112-1AA36-0DH0 and 3VA1112-5EF32-0CA0?","answer":"The 3VA1112-5EF32-0CA0 is a full molded-case circuit breaker with an electronic overcurrent release (TM240) providing LI protection — it can clear faults. The 3VA1112-1AA36-0DH0 is a switch disconnector only, with no overload or short-circuit protection; it relies on an upstream protective device. Both share the same frame, dimensions, and terminal arrangement, so they are mechanically interchangeable in the panel."},{"question":"Will 3VA1112-1AA36-0DH0 drop into a panel specified for 3VA1112-5EF32-0CA0 without rewiring?","answer":"Yes — both share the same 76.2 mm width, 130 mm height, 70 mm depth, and front terminal connection pattern. The mounting footprint and lug positions are identical, so a panel cutout and bus bar layout designed for the MCCB sibling will accept this switch disconnector without modification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA36-0DH0","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/3VA1112-1AA36-0DH0 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}}