{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-1AA42-0CE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-1AA42-0CE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-1AA42-0CE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-1AA42-0CE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON switch disconnector, 3VA1 IEC frame 400, 4-pole SD100, In=400A, without overload or short-circuit protection, nut keeper kit, undervoltage release 120-127 V AC 50/60 Hz, 4 auxiliary changeover switches.","salesMarkdown":"It provides visible isolation for a circuit but carries no overload or short-circuit protection — that's handled upstream by a separate breaker or fuse. The integrated undervoltage release (120-127 V AC, 50/60 Hz) drops the switch open if control voltage is lost, which is useful for emergency-stop chains or undervoltage protection schemes. Four auxiliary changeover contacts report the switch position back to a PLC or status lamp. This is a panel-mount disconnect, not a DIN-rail breaker. The nut keeper kit on both sides of the main current circuit means you bolt the busbars or cable lugs directly to the front terminals — no spring-cage or screw-clamp terminals for the power path. The frame 400 footprint is standard for the 3VA1 family, so if you're replacing a failed disconnect in an existing SENTRON panel, the mounting hole pattern and busbar spacing should match. The auxiliary switch block and undervoltage release are factory-integrated; no field wiring of separate accessories needed.","metaTitle":"Siemens SENTRON 3VA1340-1AA42-0CE0 Switch Disconnector, 400A","metaDescription":"Siemens SENTRON 3VA1340-1AA42-0CE0 switch disconnector, IEC frame 400, 4-pole, 400A rated current. No overload or short-circuit protection. Lifecycle stage: current. Sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"title":"3VA1340-1AA42-0CE0","description":"switch disconnector 3VA1 IEC frame 400 4-pole SD100, In=400A without overload protection w/o short-circuit protection nut keeper kit switch disconnector 3VA1 IEC frame 400 4-pole SD100, In=400A without overload protection w/o short-circuit protection nut keeper kit UNDERVOLTAGE RELEASE 120-127 V AC 50/60 HZ ACCESSORY FOR 3VA1 4 AUXILIARY SWITCH CHANGEOVER H","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Switch disconnector"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f59d8c360c846d5ff9ef773daebb7908.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1512510&mlfb=3VA1340-1AA42-0CE0"},"ai":{"faq":[{"question":"What is 3VA1340-1AA42-0CE0 used for?","answer":"It is a 400 A, 4-pole switch disconnector used for visible isolation of a circuit in industrial panels. It does not provide overload or short-circuit protection — that must be provided upstream."},{"question":"Where can I buy 3VA1340-1AA42-0CE0?","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":"Does 3VA1340-1AA42-0CE0 include overload protection?","answer":"No, this switch disconnector is specified without overload protection and without short-circuit protection. It is a pure isolation device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1340-1AA42-0CE0","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/3VA1340-1AA42-0CE0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}