{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-6EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-6EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-6EF32-0DA0, molded case circuit breaker, 3-pole, 40 A rated continuous current, TM240 thermal-magnetic release, undervoltage release, breaking capacity 220 kA at 240 V.","salesMarkdown":"## What it is — and what the ratings mean for fit The Siemens SENTRON 3VA1140-6EF32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current (Iu). It carries a TM240 thermal-magnetic release — the thermal element handles overloads, the magnetic element handles short-circuits — and includes an undervoltage release (UVR) that trips the breaker when supply voltage drops below a set threshold. That UVR is the 3VA9608-0BB25 auxiliary trip unit, integrated at the factory. Breaking capacity is the headline number here: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. That means it can safely interrupt a fault current up to those levels at the respective voltage — critical for high-fault installations like transformer secondaries or large motor control centers where available fault current can exceed 100 kA. The 220 kA at 240 V figure is especially relevant for North American 240 V delta or 277/480 V wye systems where the line-to-ground fault can be severe. Thermal derating is published across the full operating range: full 40 A from 40 °C to 50 °C, then tapering to 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. If the panel ambient runs hot — say, a crowded enclosure near a furnace line — you need to account for that drop. The rated insulation voltage is 800 V, so it's comfortable on 690 V systems with margin. ## Where it goes — panel integration and environment This MCCB is designed for DIN-rail mounting in a distribution or motor control center panel. Dimensions are 70 mm deep, 76.2 mm wide, and 130 mm tall — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and third-party enclosures with the appropriate busbar adapter. The front face carries an IP40 rating, meaning protection against tools and wires greater than 1 mm, but not against water ingress — keep it inside a rated enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. That covers most indoor industrial environments, but if the breaker sits in an unheated warehouse or a refrigerated area, the storage low end is fine, but the operating minimum of -25 °C means it won't trip reliably below that — not an issue for most plants, but worth noting for cold-climate outdoor enclosures.","metaTitle":"Siemens 3VA1140-6EF32-0DA0 SENTRON MCCB, 40 A, 3-Pole, 220 k","metaDescription":"Siemens SENTRON 3VA1140-6EF32-0DA0 molded case circuit breaker, 40 A continuous, 3-pole, 220 kA breaking at 240 V. TM240 release, undervoltage release. Active production, sourced t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 690 V":"17 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"38.4 A","at 60 °C":"37.6 A","at 65 °C":"36.8 A","at 70 °C":"36 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"40 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"40 A","Adjustable response value current / li max.":"400 A","Adjustable response value current / li min.":"200 A","Adjustable response value current / lr min.":"28 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":"H","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=171554&mlfb=3VA1140-6EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-6EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-6EF32-0DA0?","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 breaking capacity of this MCCB at 240 V?","answer":"220 kA at 240 V — that's the highest interrupting rating in the lineup, suitable for high-fault installations like transformer secondaries."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, it comes with an integrated undervoltage release (UVR) — the factory-fitted auxiliary trip unit is order code 3VA9608-0BB25."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-6EF32-0DA0","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/3VA1140-6EF32-0DA0 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}}