{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-3ED32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-3ED32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-3ED32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1040-3ED32-0KC0, molded case circuit breaker, 3-pole, 40 A rated current, 75.6 kA breaking capacity at 240 V, line protection design.","salesMarkdown":"It's a 3-pole unit rated at 40 A continuously from 40 °C up to 50 °C ambient, with a slight thermal derating curve above that — at 55 °C it carries 38.4 A, at 70 °C it's good for 36 A. The breaking capacity tells you where this breaker can clear a fault without welding its contacts shut. At 240 V it interrupts 75.6 kA; at 415 V it's 52.5 kA; at 440 V it drops to 32 kA; and at 500 V or 690 V it still holds 7.5 kA. That's a strong SCCR for a 40 A frame — it gives you selectivity headroom in a main or feeder position without stepping up to a larger frame size. The basic switch assembly is order code 3VA10403ED320AA0. The 3VA family shares a common accessory platform across frame sizes. This breaker uses the same auxiliary switches and shunt trips. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into most DIN-rail or panel-mount enclosures without re-drilling. No special derating for ambient below 40 °C — the 40 A rating holds right down to -25 °C. The 3VA1110-5ED36-0AC0 is a higher-current sibling in the same SENTRON family. Where this 3VA1040-3ED32-0KC0 is a 40 A frame, the 3VA1110 is rated at 100 A. The physical footprint is larger — the 100 A frame uses a wider and taller body, so it won't drop into a panel cutout designed for this 40 A unit without enlarging the opening. Both use the same 3VA accessory system (aux switches, shunt trips), but the breaking capacity curves differ: the 100 A breaker typically has lower interrupting ratings at the same voltage because the higher continuous current stresses the arc chamber harder. If your BOM called for the 3VA1110 and you're considering this 40 A as a substitute, check your load first — this one won't carry a 100 A motor circuit.","metaTitle":"Siemens 3VA1040-3ED32-0KC0 SENTRON MCCB, 40A, 3-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1040-3ED32-0KC0 molded case circuit breaker, 40A rated at 40-50°C, 3-pole, 75.6kA breaking at 240V. Current production. Order via 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":"No","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 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":"3VA9688-0BL33","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=219238&mlfb=3VA1040-3ED32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Will the 3VA1040-3ED32-0KC0 drop into a panel designed for the 3VA1110-5ED36-0AC0?","answer":"No — the 3VA1110 is a 100 A frame with larger physical dimensions. This 40 A unit is smaller and would leave gaps in the cutout; it cannot be swapped without panel modification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-3ED32-0KC0","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/3VA1040-3ED32-0KC0 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}}