{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-1AA32-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-1AA32-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-1AA32-0HC0, switch disconnector in MCCB design, IEC frame 160, 3-pole, SD100, In=125 A, without overload or short-circuit protection, with shunt trip (STL) 12-30 V DC / 24 V AC 50/60 Hz, 2 auxiliary switches HQ, busbar connection.","salesMarkdown":"The Siemens 3VA1112-1AA32-0HC0 is a SENTRON switch disconnector built in MCCB (moulded-case circuit breaker) design, but configured without overload or short-circuit protection — it is a pure disconnect, not a breaker. This is a load-break switch for isolation and switching duty, sized for IEC frame 160, and carries a shunt trip (STL) coil for remote tripping plus two HQ auxiliary switches for status feedback. That simplifies BOM sizing: if your load pulls 125 A or less, this disconnect handles it at any ambient within that band. Insulation voltage of 800 V means the internal clearance and creepage are designed for 800 V class, so it is comfortable on 690 V systems without voltage stress concerns. Power loss is 38 W maximum at rated current. That matters for enclosure thermal management — a 125 A disconnect dumping 38 W into a small stainless enclosure may need ventilation or derating of adjacent devices. The IP40 front protection means it is splash-proof from the front but not hose-down; suitable for indoor panel mounting, not washdown zones.","metaTitle":"Siemens 3VA1112-1AA32-0HC0 SENTRON Switch Disconnector, 125","metaDescription":"Siemens SENTRON 3VA1112-1AA32-0HC0 switch disconnector, 125 A continuous at 40-70 °C, 3-pole, 690 V AC, with shunt trip and 2 HQ aux switches. Active production, 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","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"125 A","at 60 °C":"125 A","at 65 °C":"125 A","at 70 °C":"125 A","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Switch disconnector","Undervoltage Release":"No","Design Of The Product":"in MCCB design","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"38 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"Shunt trip (STL)","Insulation Voltage / Rated Value":"800 V","protection class IP / on the front":"IP40","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","Product Function / Communication Function":"No","Undervoltage Release With Leading Contact":"No","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","number of CO contacts / for auxiliary contacts":"2","Mechanical Service Life (Operating Cycles) / Typical":"15 000","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=501551&mlfb=3VA1112-1AA32-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-1AA32-0HC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-1AA32-0HC0 and get a price?","answer":"It 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 does the 125 A rating mean for a hot panel?","answer":"The 125 A rating is flat from 40 °C through 70 °C — no derating required. If your load is ≤125 A, this disconnect handles it at any ambient within that range without recalculating."},{"question":"What is the shunt trip voltage range?","answer":"The shunt trip (STL) coil accepts 12-30 V DC or 24 V AC 50/60 Hz — a wide-range coil covering common control voltages in that band."},{"question":"Will 3VA1112-1AA32-0HC0 drop into a panel specified around 5SQ2370-2YA05?","answer":"No — the 5SQ2370-2YA05 is a miniature circuit breaker (MCB) with different form factor, protection function, and ratings (0.5 A, 400 V AC, IP20). The 3VA1112 is a 125 A switch disconnector in MCCD design with busbar connection; they are not mechanically or electrically interchangeable without panel redesign."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-1AA32-0HC0","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/3VA1112-1AA32-0HC0 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}}