{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1040-3ED46-0AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1040-3ED46-0AA2","canonicalUrl":"https://aoctrl.com/siemens/3VM1040-3ED46-0AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1040-3ED46-0AA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1040-3ED46-0AA2, Molded case circuit breaker, 4-pole, 40 A, 76 kA at 240 V, TM210 overcurrent release, N switching capacity class.","salesMarkdown":"The Siemens SENTRON 3VM1040-3ED46-0AA2 is a 4-pole molded case circuit breaker rated 40 A continuous at 40 °C, with a TM210 thermal-magnetic overcurrent release (LI protective function). It's in the N switching capacity class, meaning it's sized for standard industrial distribution — not the high-breaking version, but still capable of 76 kA at 240 VAC and 53 kA at 415 VAC. Frame size is 100 A, so the breaker itself is physically larger than the 40 A trip unit suggests — the same frame can be re-rated up to 100 A if you swap the release later. The interrupting ratings drop fast as voltage climbs: 76 kA at 240 V, 53 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 500 V. If your system runs 480 V wye, the 440 V figure is the closest published value — 32 kA — and that's the one to check against your available fault current. The thermal curve holds 40 A from 40 °C up to 50 °C, then derates to 39 A at 55–60 °C and 38 A at 65 °C, 37 A at 70 °C. That's a shallow derate; you don't lose much headroom in a warm enclosure. Box terminals on the front for main circuit connection — standard panel wiring, no special lug kit needed. Front-connected box terminals accept copper or aluminum conductors — strip length and torque per the terminal marking on the breaker. Maximum power loss is 14 W at rated current — negligible for panel heat calc, but worth noting if you're packing a dozen of these in a small enclosure.","metaTitle":"Siemens 3VM1040-3ED46-0AA2 SENTRON MCCB, 40 A, 76 kA at 240","metaDescription":"Siemens SENTRON 3VM1040-3ED46-0AA2 molded case circuit breaker, 4-pole, 40 A rated, 76 kA at 240 VAC. TM210 release, N class. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"at 240 V":"76 kA","at 415 V":"53 kA","at 440 V":"32 kA","at 500 V":"7.5 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"39 A","at 60 °C":"39 A","at 65 °C":"38 A","at 70 °C":"37 A","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"14 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"40 A","Rated insulation voltage Ui":"690 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM210","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"Without","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product extension / optional / motor drive":"No","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"N","Max. rated operational current of the frame size":"100 A","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e96686e468e7bc670165c4dfac00ed75.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=682754&mlfb=3VM1040-3ED46-0AA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1040-3ED46-0AA2/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VM1040-3ED46-0AA2 at 240 V?","answer":"76 kA at 240 VAC. It also carries 53 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 500 V."},{"question":"Where can I buy 3VM1040-3ED46-0AA2 and get current pricing?","answer":"We source this breaker to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an inquiry and we'll respond with a firm quote."},{"question":"What is the continuous current rating of 3VM1040-3ED46-0AA2 at elevated temperatures?","answer":"40 A from 40 °C to 50 °C, then derates to 39 A at 55–60 °C, 38 A at 65 °C, and 37 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1040-3ED46-0AA2","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/3VM1040-3ED46-0AA2 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}}