{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF42-0AA0-ZD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF42-0AA0-ZD00","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF42-0AA0-ZD00","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF42-0AA0-ZD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160, breaking capacity class S, Icu=36kA @ 415V, 4-pole, In=40A, TM240, ATAM, line protection, nut keeper kit for DC Power OEM in China.","salesMarkdown":"The 3VA1140-4EF42-0AA0-ZD00: The neutral conductor is unprotected on this variant — the breaker switches the three phases and leaves the N solid. That is the intended configuration for a 4-pole breaker feeding a TN-S or TN-C-S system where the neutral is bonded to ground and does not require overcurrent protection; if your design requires a protected neutral (e.g., for an IT system or a separately derived source), you need a different 3VA1 order code with an N-pole release. The nut keeper kit (included per the order-code suffix) retains the terminal nuts during wiring — a practical detail when the panel is built on a bench and then shipped: the nuts do not rattle loose in transit. The breaker ships with the TM240 thermal-magnetic trip unit already installed; no separate trip-unit purchase is needed.","metaTitle":"Siemens 3VA1140-4EF42-0AA0-ZD00 Circuit Breaker, 40A, 36kA @","metaDescription":"Siemens 3VA1140-4EF42-0AA0-ZD00 IEC frame 160 MCCB, 4-pole, 40A, 36kA IC @ 415V. Current lifecycle stage. Sourced to order against RFQ. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/86c7673da5bd652099823ba489ed98d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1667737&mlfb=3VA1140-4EF42-0AA0-ZD00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF42-0AA0-ZD00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF42-0AA0-ZD00 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ); availability and current pricing are confirmed at quote time."},{"question":"What does the 36 kA interrupting rating at 415 V mean for my panel?","answer":"It means this MCCB can safely interrupt a fault current up to 36 kA at 415 V without failing catastrophically — the standard breaking capacity (class S) for distribution boards where available fault current is below 40 kA. It is not suited for high-fault installations (e.g., directly downstream of a large transformer) where the prospective short-circuit current exceeds 36 kA."},{"question":"Does this breaker protect the neutral conductor?","answer":"No — the neutral conductor is unprotected (solid N). This is the correct choice for TN-S or TN-C-S systems where the neutral is bonded to earth and does not require overcurrent protection. For a protected neutral, select a 3VA1 order code with an N-pole release."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"Siemens 3VA1 series breakers carry IEC 60947-2 certification as standard. RoHS and REACH declarations are part of the manufacturer's standard documentation package. The evidence does not list UL or CSA marks for this exact order code; confirm with the manufacturer if a UL-listed variant is required for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF42-0AA0-ZD00","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/3VA1140-4EF42-0AA0-ZD00 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}}