{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF36-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF36-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF36-0DA0, molded case circuit breaker, 3-pole, 40 A rated continuous current, TM240 thermal-magnetic release, with undervoltage release, 70 mm depth, 76.2 mm width.","salesMarkdown":"## Siemens 3VA1140-4EF36-0DA0 — 40 A MCCB with undervoltage release The Siemens SENTRON 3VA1140-4EF36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current at 40 °C, with the TM240 thermal-magnetic overcurrent release. Breaking capacity hits 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault service-entrance or distribution panels without cascading upstream. This is the line-protection version, meaning it's set up for cable and busbar protection in a main or subfeed panel, not motor-circuit protection. No communication function, no phase-failure detection, no ground-fault monitoring — it's a straightforward thermal-magnetic breaker with the UVR as the only accessory built in. Above 55 °C it steps down: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, 36 A at 70 °C. Breaking capacity varies sharply with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 11.9 kA at 690 V. At 690 V it's still adequate for most industrial distribution, but verify your available fault current against the 11.9 kA ceiling. The IP40 front protection means it's splash-proof on the front face but not sealed against hose-down — mount inside a panel with a door. Footprint is 76.2 mm wide (3-pole), 130 mm tall, 70 mm deep. That's a standard MCCB cutout — drops into the same panel space as other 3VA1 frames. No auxiliary contacts fitted, so if you need status feedback to a PLC, you'll add the 3VA9608-0BB25 auxiliary trip block or a separate auxiliary switch. Verify your control voltage matches the UVR coil rating (not listed here, but standard 24 VDC or 230 VAC per the 3VA family).","metaTitle":"Siemens 3VA1140-4EF36-0DA0 SENTRON MCCB, 40 A, 3-Pole, UVR","metaDescription":"Siemens SENTRON 3VA1140-4EF36-0DA0 molded case circuit breaker, 40 A rated, 3-pole, TM240 release, undervoltage release fitted. Breaking capacity 121 kA at 240 V. Current lifecycle","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"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":"S","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":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=505743&mlfb=3VA1140-4EF36-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0DA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1140-4EF36-0DA0?","answer":"We source this part to order against an RFQ. Submit a request for quote and we'll confirm current pricing and availability at that time."},{"question":"What breaking capacity does 3VA1140-4EF36-0DA0 have at 415 V?","answer":"75.6 kA at 415 V. At 240 V it's 121 kA, at 440 V it's 52.5 kA, and at 690 V it's 11.9 kA."},{"question":"Does 3VA1140-4EF36-0DA0 include an undervoltage release?","answer":"Yes, it comes with an integrated undervoltage release (UVR) as the auxiliary release. No separate undervoltage module is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0DA0","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/3VA1140-4EF36-0DA0 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}}