{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1140-3EE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1140-3EE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1140-3EE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1140-3EE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1140-3EE42-0AA0, 4-pole molded case circuit breaker, 40 A rated, 76 kA at 240 V, TM220 release, IP40 front.","salesMarkdown":"It carries 40 A continuously at ambient temperatures up to 50 °C without derating, and only drops to 37 A at 70 °C — so you can pack it into a warm enclosure and still hold the full 40 A through most normal operating conditions. This MCCB interrupts 76 kA at 240 VAC, 53 kA at 415 VAC, 32 kA at 440 VAC, and 12 kA at 500 VAC. The 76 kA figure at 240 V is the headline — it handles high-fault-capacity service-entrance panels on 240 V delta or 240/120 V split-phase systems. At 415 V (common in European industrial distribution), the 53 kA rating covers most transformer-fed switchboards; the 32 kA at 440 V still gives headroom for motor control centers. The 12 kA at 500 V is the tail — fine for 480 V panels in North America where typical available fault current runs 10–25 kA, but check your utility's SCCR study if you're above that. The 3VM1140-3EE42-0AA0 measures 130 mm high, 101.6 mm wide, and 70 mm deep. The 101.6 mm width (4 inches) is the standard 4-pole MCCB footprint — it occupies four 25 mm (1-inch) module spaces on a DIN rail or bolts directly to a mounting plate. Front IP40 protection handles typical panel environments; no special gasketing needed for dry indoor installs. ## Key electrical ratings at a glance Rated insulation voltage (Ui) is 690 VAC, and maximum DC operational voltage is 500 VDC — so it works in both AC distribution and DC battery-bank or UPS circuits up to that limit. The TM220 release has an adjustable li max of 400 A for the short-circuit pickup, giving flexibility to coordinate with downstream breakers. Power loss maxes at 11 W, which is modest for a 40 A frame — helps keep the enclosure thermal rise under control. ## What's not on this breaker If you need remote trip signaling or GFCI, you're looking at a different 3VM variant or an add-on accessory. The neutral conductor is not upgradeable or retrofittable on this frame — if your design requires a switched neutral, spec the N-pole version from the start.","metaTitle":"Siemens 3VM1140-3EE42-0AA0 SENTRON MCCB, 40 A, 76 kA at 240","metaDescription":"Siemens SENTRON 3VM1140-3EE42-0AA0 molded case circuit breaker, 4-pole, 40 A rated, 76 kA at 240 VAC. Current lifecycle stage. Quoted to order against 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","title":"3VM1140-3EE42-0AA0","Height":"130 mm","at 240 V":"76 kA","at 415 V":"53 kA","at 440 V":"32 kA","at 500 V":"12 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","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class N Icu=25kA @ 415V 4-pole, line protection TM220, ATFM, In=40A overload protection Ir=28A...40A short-circuit protection Ii=10 x In N conductor unprotected nut keeper kit","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":"11 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"690 V","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM220","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available under Service & Support in the last chapter","protection class IP / on the front":"IP40","design of the N-conductor protection":"Without","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"400 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=575496&mlfb=3VM1140-3EE42-0AA0"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VM1140-3EE42-0AA0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time, not published here."},{"question":"What's the closest functional alternative to 3VM1140-3EE42-0AA0?","answer":"The 3VA1020-3ED36-0AA0 is a similar SENTRON 3VA frame MCCB, but it's a different series with different breaking capacity curves and accessory compatibility. The 3VM1140-3EE42-0AA0 is the current-production 4-pole 40 A line-protection breaker; the 3VA series is the higher-performance sibling with more accessory options. Verify footprint and mounting before substituting — the 3VA frame may have different depth or terminal spacing."},{"question":"What compliance documentation does Siemens provide for 3VM1140-3EE42-0AA0?","answer":"Siemens SENTRON MCCBs carry IEC 60947-2 certification as standard. The manufacturer provides RoHS and REACH declarations, along with UL/CSA listings for the North American market variants. Specific declaration documents are available through Siemens' support portal or upon request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1140-3EE42-0AA0","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/3VM1140-3EE42-0AA0 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}}