{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1140-3GD42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1140-3GD42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1140-3GD42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1140-3GD42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VM1140-3GD42-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, interrupting 76 kA at 240 V, 53 kA at 415 V, 32 kA at 440 V, 11.9 kA at 500 V.","salesMarkdown":"Its interrupting capacity hits 76 kA at 240 V AC and still holds 53 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V — numbers that tell you it can clear high-fault bolted faults without cascading upstream, which is the deciding factor for panel SCCR compliance (IEC 60947-2). The breaker holds its full 40 A rating from 40 °C up to 50 °C, then drops to 39 A at 55 °C and 60 °C, 38 A at 65 °C, and 37 A at 70 °C. That derating curve is what you need when the panel runs hot — if your enclosure ambient sits at 60 °C, you're limited to 39 A continuous, not the nameplate 40 A. The TM210 thermal-magnetic release (adjustable Ir up to 40 A) lets you fine-tune the trip point to the actual load without swapping the breaker. The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep — a standard 4-pole MCCB footprint that fits most DIN-rail or screw-mount panel layouts. ## Electrical ratings and approvals context Rated insulation voltage Ui is 690 V, and max operational voltage for DC applications is 500 V — so it can serve DC bus or battery circuits within that limit. The 12 000-cycle mechanical endurance is typical for a panel-mounted MCCB; it's not a switching contactor, but it will handle routine isolation without issue.","metaTitle":"SENTRON 3VM1140-3GD42-0AA0 MCCB, 40 A, 4-Pole, 76 kA at 240","metaDescription":"SENTRON 3VM1140-3GD42-0AA0 molded case circuit breaker, 40 A rated continuous current, 4-pole, interrupting up to 76 kA at 240 V. Active production. Sourced to order against an RFQ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","at 240 V":"76 kA","at 415 V":"53 kA","at 440 V":"32 kA","at 500 V":"11.9 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","Depth [in]":"2.8 in","Width [in]":"4 in","Height [in]":"5.1 in","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"12 000","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"10.8 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":"100%","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"40 A","Adjustable response value current / li max.":"400 A","Adjustable response value current / li min.":"400 A","Adjustable response value current / lr min.":"40 A","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":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front connection","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6,5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/be82629451abee9fe4aefb8d0544915b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575497&mlfb=3VM1140-3GD42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1140-3GD42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VM1140-3GD42-0AA0 and how do I get a price?","answer":"This part is sourced 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 is 3VM1140-3GD42-0AA0's listed depth?","answer":"The depth is 70 mm (2.8 in)."},{"question":"What is 3VM1140-3GD42-0AA0's listed width?","answer":"The width is 101.6 mm (4 in)."},{"question":"Will 3VM1140-3GD42-0AA0 drop into a panel specified around 3VA1020-3ED36-0AA0 without rewiring?","answer":"The 3VM1140-3GD42-0AA0 is a 4-pole 40 A MCCB with a TM210 release, while the 3VA1020-3ED36-0AA0 is a different frame size and rating — panel fit is not guaranteed without verifying mounting footprint, lug spacing, and bus bar alignment. Always compare the dimensional drawing and terminal layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1140-3GD42-0AA0","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/3VM1140-3GD42-0AA0 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}}