{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-7JQ42-0AA0, molded case circuit breaker, 4-pole, 400 A continuous, interrupting 330 kA at 240 V, 600–6000 A adjustable trip range.","salesMarkdown":"The Siemens 3VA2440-7JQ42-0AA0 is a SENTRON molded case circuit breaker rated for 400 A continuous current across the full operating temperature range from -25 °C to 70 °C — no derating needed up to 70 °C ambient. Four poles handle three-phase plus neutral or a second protected phase. The adjustable trip unit covers 600 A minimum to 6 000 A maximum, so you set the instantaneous pickup to match the downstream cable and load, not the other way around. Interrupting capacity is the headline: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA figure is still adequate for most motor-circuit fault levels, but verify against your transformer impedance if you are feeding a 690 V drive line. The breaker includes a communication function for remote monitoring or trip-event capture, and a ground-fault monitoring version configured as summation current formation on L + N conductor — it sums the phase and neutral currents to detect leakage without a separate CT. Dimensions: 248 mm high, 184 mm wide, 110 mm deep. The 184 mm width for a 4-pole frame is standard for this class; it occupies four 45 mm module spaces on a DIN rail if using an adapter, or direct screw-mount on the backplate.","metaTitle":"Siemens 3VA2440-7JQ42-0AA0 SENTRON MCCB, 400 A, 4-Pole, 600–","metaDescription":"Siemens 3VA2440-7JQ42-0AA0 SENTRON molded case circuit breaker, 400 A continuous, 4-pole, interrupting 330 kA at 240 V. Active production. Sourced to order against RFQ.","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":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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","Initial Value":"80 A","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"400 A","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":"No","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 130%","Product Function / Grounding Protection":"Yes","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":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","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=464422&mlfb=3VA2440-7JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-7JQ42-0AA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"What is 3VA2440-7JQ42-0AA0's interrupting capacity at 240 V?","answer":"330 kA at 240 V, which is the highest interrupting rating in the 3VA2 line — suitable for high-fault secondary bus applications."},{"question":"What is the continuous current rating of 3VA2440-7JQ42-0AA0?","answer":"400 A continuous, sustained across the entire -25 °C to 70 °C operating range without derating."},{"question":"Does 3VA2440-7JQ42-0AA0 include ground-fault protection?","answer":"Yes, it has a ground-fault monitoring version using summation current formation on L + N conductor — it detects leakage by summing phase and neutral currents."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7JQ42-0AA0","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/3VA2440-7JQ42-0AA0 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}}