{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1450-1AA42-0HB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1450-1AA42-0HB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1450-1AA42-0HB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1450-1AA42-0HB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 series, switch disconnector, IEC frame 630, 4-pole SD100, In=500 A, shunt trip left 24 V AC 50/60 Hz / 24-30 V DC, nut keeper kit.","salesMarkdown":"The Siemens SENTRON 3VA1450-1AA42-0HB0 is a 4-pole switch disconnector on the 3VA1 IEC frame 630, rated at 500 A continuous current. It provides visible isolation and safe disconnection of a circuit under load — no overload or short-circuit protection built in, so it pairs with upstream protective devices. The 500 A continuous rating (In) on the IEC frame 630 means this disconnect handles full-load current for large motor circuits, transformer feeders, or main panel incomers up to that level. Four poles give it the ability to switch three-phase plus neutral, common in 4-wire distribution systems. The shunt trip at 24 V AC/DC allows integration with emergency-stop circuits, fire-alarm panels, or remote PLC-based trip commands — wired to a normally-open contact, it trips the disconnect when voltage is applied. ## Deployment context Mounts in a standard panel enclosure on a mounting plate or DIN-rail adapter (the 3VA1 frame uses a bolt-on footprint). The nut keeper kit on both ends simplifies box-terminal wiring for the main current circuit — no loose hardware to drop into live gear. The shunt trip and auxiliary switch connections land on the front terminals, accessible with the panel door open.","metaTitle":"Siemens SENTRON 3VA1450-1AA42-0HB0 Switch Disconnector, 500","metaDescription":"Siemens SENTRON 3VA1450-1AA42-0HB0 switch disconnector, IEC frame 630, 4-pole, In=500 A. Shunt trip left 24 V AC/DC. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Switch disconnector"}},"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=1494982&mlfb=3VA1450-1AA42-0HB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1450-1AA42-0HB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1450-1AA42-0HB0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the shunt trip voltage for this disconnect?","answer":"The shunt trip operates on 24 V AC 50/60 Hz or 24-30 V DC, wired to the left-side accessory slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1450-1AA42-0HB0","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/3VA1450-1AA42-0HB0 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}}