{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-3ED32-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-3ED32-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-3ED32-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED32-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1040-3ED32-0HH0, molded case circuit breaker, 3-pole, 40 A, 75.6 kA at 240 V, line protection design, shunt trip, 2 aux switches + 1 trip alarm.","salesMarkdown":"The Siemens SENTRON 3VA1040-3ED32-0HH0 is a 3-pole molded case circuit breaker rated 40 A continuous at 40 °C, with an interrupting capacity of 75.6 kA at 240 V and 52.5 kA at 415 V. Those are the numbers that decide whether it clears a fault before the upstream device blows — at 440 V it still holds 32 kA, and at 500 V or 690 V it drops to 7.5 kA, so the voltage at the fault point matters for coordination studies. Power loss at full load runs 10.8 W — not a panel-heating concern in a standard enclosure, but worth a glance if you're packing multiple breakers in a sealed box. ## Thermal derating — the real-world current At 55 °C it derates to 38.4 A, at 60 °C to 37.6 A, at 65 °C to 36.8 A, and at 70 °C to 36 A. The 3VA1040-3ED32-0HH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 3-pole width (76.2 mm) is standard for this frame size — it occupies the same slot as other 3VA1040 variants, so a panel laid out for the 3VA1110-5ED36-0AC0 will accept this breaker without drilling new holes or moving the bus bars.","metaTitle":"Siemens 3VA1040-3ED32-0HH0 SENTRON MCCB, 40 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1040-3ED32-0HH0 molded case circuit breaker, 40 A, 3-pole, 75.6 kA interrupting at 240 V. Active 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":"7.5 kA","at 690 V":"7.5 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":"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":"3VA10403ED320AA0","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":"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":"3VA9688-0BL30","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":"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=261278&mlfb=3VA1040-3ED32-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED32-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1040-3ED32-0HH0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no speculative stock is held."},{"question":"Will 3VA1040-3ED32-0HH0 drop into a panel designed for 3VA1110-5ED36-0AC0?","answer":"Yes, the 76.2 mm width and DIN-rail mounting are common across the 3VA1040 frame. The 3VA1110-5ED36-0AC0 is a higher-current variant (100 A frame), so the bus bar lugs and cable sizing differ, but the physical footprint and mounting pattern are the same — no rewiring of the panel layout is needed."},{"question":"What compliance documentation is available for this MCCB?","answer":"As a Siemens SENTRON product, the 3VA1040 series carries IEC 60947-2 certification. RoHS and REACH declarations are standard from Siemens. UL listing varies by specific variant — confirm at quote time if UL 489 is required for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-3ED32-0HH0","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/3VA1040-3ED32-0HH0 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}}