{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-3EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-3EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-3EF32-0JH0, molded case circuit breaker, 3-pole, 40 A rated at 40 °C, 75.6 kA breaking capacity at 240 V, line protection design, with shunt trip and auxiliary switches.","salesMarkdown":"The Siemens SENTRON 3VA1140-3EF32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated 40 A at 40 °C, designed for line protection in distribution panels. Its 75.6 kA interrupting capacity at 240 V gives headroom for high-fault service entrances or sub-distribution boards where the available fault current is substantial. The 800 V rated insulation voltage means it can be applied in 480Y/277 V or 600 V industrial systems without derating the insulation path. Rated current holds at 40 A from 40 °C through 50 °C, then steps down to 39 A at 55–60 °C and 38 A at 65 °C, 37 A at 70 °C (–). For a panel that runs warm — say a packed enclosure near a motor drive — the 38 A at 65 °C figure is the one to size against, not the 40 A nameplate. Maximum power loss is 10.8 W, which adds to the enclosure thermal budget. ## Breaking Capacity by Voltage — Selectivity Planning The interrupting ratings step down with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–). In a 480 V panel, the 32 kA figure governs; if the available fault current at the board is 35 kA, this breaker is not the right choice upstream — you would need a higher-rated frame or a current-limiting fuse ahead of it. At 240 V, the 75.6 kA rating covers essentially any service entrance in North America. The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep (–). The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for this frame size — it fits the same DIN-rail or panel-mount cutout as other SENTRON 3VA1 breakers. Depth of 70 mm (2.76 in) leaves room for rear-connection busbars or a backplate in a 200 mm deep enclosure. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. The storage minimum of -40 °C matters for unheated warehouses or site containers in cold climates — the breaker can sit through a winter without damage. The product is designed to IEC/EN 60947-2 and carries CE marking for European installations; UL/CSA listing is standard for the SENTRON family, though the specific file number is not in this record.","metaTitle":"Siemens 3VA1140-3EF32-0JH0 SENTRON MCCB, 40 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1140-3EF32-0JH0 molded case circuit breaker, 40 A rated, 3-pole, 75.6 kA breaking at 240 V. Current production. 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":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 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]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Of The Supplied Basic Switch":"3VA11403EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=81323&mlfb=3VA1140-3EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-3EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1140-3EF32-0JH0?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — both are confirmed at quote time, not published as live stock figures."},{"question":"What is the breaking capacity of this MCCB at 240 V?","answer":"75.6 kA at 240 V. At 415 V it is 52.5 kA, at 440 V it is 32 kA, and at 500 V and 690 V it is 11.9 kA (–)."},{"question":"Does this breaker include a shunt trip or auxiliary switches?","answer":"Yes. It has a shunt trip release (STL) for remote tripping, plus two auxiliary switches and one trip alarm switch (HQ) for status feedback."},{"question":"What compliance documentation does this brand provide?","answer":"The SENTRON series is designed to IEC/EN 60947-2 and carries CE marking. UL and CSA listings are standard for the family, though the specific certification file is not in this record. RoHS and REACH compliance documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-3EF32-0JH0","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/3VA1140-3EF32-0JH0 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}}