{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF32-0DH0, 3-pole molded case circuit breaker, 40 A, 187 kA interrupting at 240 V, line protection, with undervoltage release and auxiliary switches.","salesMarkdown":"It's a 3-pole unit rated 40 A continuous at 40 °C, with an interrupting capacity of 187 kA at 240 V — that's the fault current it can safely clear without welding contacts or rupturing the case, so it's sized for high-fault locations like service entrances or industrial switchboards where available fault current is substantial. The interrupting rating drops as voltage rises: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. That's typical for an MCCB — the arc energy scales with voltage, so the same breaker can't interrupt as much current at higher potentials. Thermal derating is mild: it holds 40 A up to 50 °C, then drops to 39 A at 55–60 °C, 38 A at 65 °C, and 37 A at 70 °C. That means in a hot enclosure near the top of a panel, you still get nearly full rating — no need to oversize for ambient. ## Built-in accessories and integration Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — a standard 3-pole MCCB footprint that fits SENTRON panelboards and most DIN-rail adapters. Power loss is 13.3 W maximum at rated load — useful for thermal calculations in a sealed enclosure.","metaTitle":"Siemens 3VA1140-5EF32-0DH0 SENTRON MCCB, 40 A, 187 kA at 240","metaDescription":"Siemens 3VA1140-5EF32-0DH0 SENTRON molded case circuit breaker, 3-pole, 40 A, 187 kA interrupting at 240 V. Current lifecycle. 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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 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":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"13.3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11405EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB25","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":"M","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=134147&mlfb=3VA1140-5EF32-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0DH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1140-5EF32-0DH0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels — no stock figures or lead-time numbers are published here."},{"question":"What is the interrupting rating of 3VA1140-5EF32-0DH0 at 240 V?","answer":"187 kA at 240 V. At 415 V it's 121 kA, at 440 V it's 75.6 kA, and at 500 V or 690 V it's 17 kA."},{"question":"Does 3VA1140-5EF32-0DH0 include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) plus 2 auxiliary switches and 1 trip alarm switch (HQ)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0DH0","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/3VA1140-5EF32-0DH0 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}}