{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-4ED32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-4ED32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-4ED32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-4ED32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1040-4ED32-0DA0, 3-pole molded case circuit breaker, 40 A rated current, 121 kA interrupting capacity at 240 V, undervoltage release, active production.","salesMarkdown":"The Siemens 3VA1040-4ED32-0DA0 is a SENTRON 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous at ambient temperatures from 40 °C to 50 °C, with a slight derating curve above that — 38.4 A at 55 °C, down to 36 A at 70 °C. Its interrupting capacity hits 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and holds 11.9 kA all the way to 690 V. ## Integration & Ratings That Matter The 3-pole footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard for a SENTRON 3VA frame, meaning it drops into existing 3VA panel layouts without re-drilling the mounting plate. Power loss maxes out at 13.3 W, which is modest for a 40 A MCCB; ventilation in a sealed enclosure is still advisable if you're stacking several in a row. If you're looking at the 3VA1110-5EF32-0LA0 as a potential second-source, the key difference is the frame size. The 3VA1040-4ED32-0DA0 is a 40 A frame; the 3VA1110 series starts at 100 A and goes up. Both are 3-pole SENTRON MCCBs with UVR options, but the 3VA1110 is physically larger (wider and taller) and carries higher interrupting ratings at the same voltage points. They are not footprint-interchangeable — you cannot drop the 3VA1110 into a panel cutout designed for the 3VA1040 without reworking the bus bars and mounting holes. For a 40 A line-up, stick with the 3VA1040 frame.","metaTitle":"Siemens 3VA1040-4ED32-0DA0 SENTRON MCCB, 40A 3-Pole, 121kA a","metaDescription":"Siemens 3VA1040-4ED32-0DA0 SENTRON 3-pole MCCB, 40A rated (40°C–50°C), 121 kA interrupting at 240 V. Undervoltage release included. Active production. Quoted to order.","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"38.4 A","at 60 °C":"37.6 A","at 65 °C":"36.8 A","at 70 °C":"36 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","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":"3VA10404ED320AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM210","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":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","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=269163&mlfb=3VA1040-4ED32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1040-4ED32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1040-4ED32-0DA0 and get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What are the key interrupting ratings for 3VA1040-4ED32-0DA0?","answer":"121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V."},{"question":"Does 3VA1040-4ED32-0DA0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) as standard — the '4ED32' code signals that."},{"question":"What are the physical dimensions of 3VA1040-4ED32-0DA0?","answer":"Width 76.2 mm, height 130 mm, depth 70 mm — standard 3VA1040 frame size."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-4ED32-0DA0","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/3VA1040-4ED32-0DA0 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}}