{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 3VA2440-5KP42-0AA0, 400 A continuous, 4-pole, ETU850 electronic trip unit, line protection design, communication capable.","salesMarkdown":"Four poles, with an ETU850 electronic trip unit designed for line protection. Insulation voltage rated at 800 V. The interrupting ratings climb to 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 9 kA at 690 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream. Physical footprint: 248 mm tall, 184 mm wide, 110 mm deep. Mounts in standard panel or enclosure backpan layouts; the 4-pole width is the dimension to check against existing busbar or cable ladder spacing. The 400 A continuous rating is flat across the ambient range — that is unusual and means no thermal derating curve to manage in warm enclosures. The interrupting range (600 A minimum to 6 000 A maximum) covers most distribution panelboard and motor control center applications. The 187 kA at 240 V is a very high SCCR; this breaker can sit on the secondary of a large 480 V–208Y/120 V transformer without needing a current-limiting fuse upstream. The communication function allows remote trip indication and current monitoring via a compatible bus system, useful for energy management or predictive maintenance setups.","metaTitle":"Siemens 3VA2440-5KP42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU8","metaDescription":"Siemens 3VA2440-5KP42-0AA0 SENTRON molded case circuit breaker, 400 A continuous, 4-pole, ETU850 trip unit. Active production. SCCR to 187 kA at 240 V. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","Maximum":"6 000 A","Minimum":"600 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"9 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"400 A","at 60 °C":"400 A","at 65 °C":"400 A","at 70 °C":"400 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"63.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 130%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"630 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=20658&mlfb=3VA2440-5KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-5KP42-0AA0 and how is it quoted?","answer":"We source and quote this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no blanket stock count or price is published."},{"question":"What are the key interrupting ratings for 3VA2440-5KP42-0AA0?","answer":"Rated interrupting capacity: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V. The minimum interrupting rating is 600 A, maximum 6 000 A."},{"question":"What is the continuous current rating and does it derate with temperature?","answer":"Rated 400 A continuous from 40 °C through 70 °C ambient — no derating required across that range."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU850 electronic trip unit, which is a communicating release for line protection. Ground-fault monitoring is not included on this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5KP42-0AA0","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/3VA2440-5KP42-0AA0 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}}