{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7MQ32-0KK0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7MQ32-0KK0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7MQ32-0KK0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7MQ32-0KK0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-7MQ32-0KK0, molded case circuit breaker, 3-pole, 400 A, motor protection version with ETU860M electronic release, 330 kA at 240 V, IP40 front.","salesMarkdown":"The Siemens SENTRON 3VA2440-7MQ32-0KK0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C through 70 °C — no derating needed across that entire ambient span, which is unusual and simplifies panel thermal budgeting. It carries a 330 kA interrupting rating at 240 V, 242 kA at 415 V and 440 V, and 187 kA at 500 V; at 690 V it still holds 9 kA. The motor protection variant uses an ETU860M electronic trip unit with phase failure detection and communication capability, so it can talk to a higher-level control system for load monitoring and fault annunciation. The 400 A continuous rating at 70 °C means this breaker handles full load in a hot enclosure without forced cooling — a real advantage in a packed panel or near a motor. The ETU860M release is adjustable: response time tr from 3 s to 25 s, and tsd from 0 s up, giving the commissioning engineer fine control over coordination with downstream devices. Latching endurance of 15,000 cycles covers the mechanical life for frequent switching applications like motor feeders in a conveyor line. ## Panel integration The 138 mm width matches the common 3-pole frame spacing; verify gland plate cutout and busbar spacing before committing the panel layout. The IP40 front allows the breaker to be mounted with the front accessible through a panel door; no additional sealing is required for indoor use.","metaTitle":"Siemens 3VA2440-7MQ32-0KK0 SENTRON MCCB, 400 A, 3-Pole, Moto","metaDescription":"Siemens SENTRON 3VA2440-7MQ32-0KK0 molded case circuit breaker, 400 A continuous, 3-pole, motor protection with ETU860M release. 330 kA at 240 V. Current production. Quoted on requ","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","title":"3VA2440-7MQ32-0KK0","Height":"248 mm","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","Width [in]":"5.4 in","Height [in]":"9.8 in","description":"circuit breaker 3VA2 IEC frame 630 breaking capacity class C Icu=110kA @ 415V 3-pole, motor protection ETU860M, LSIG, In=400A overload protection Ir=160A...400A short-circuit protection Isd=1.2...15 x In, Ii=15 x In gr.-fault prot., can be sw. off Ig=0.2...1 x In= tg=0.05-0.8s nut keeper kit shunt trip (STL) 220-250V DC; 208-277V AC 1 auxiliary switch HQ 1 trip alarm switch HQ 1 electrical alarm switch","Number of poles":"3","Product version":"Motor protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Communication Function":"Yes","Phase failure detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"63.3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Summation current formation L-conductor","Design of the overcurrent release":"ETU860M","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"25","Adjustable response value time / tr min.":"3","Adjustable response value time / tsd max.":"0 s","Adjustable response value time / tsd min.":"0 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"400 A","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"80 A","Adjustable response value current / li max.":"6 000 A","Adjustable response value current / li min.":"1 200 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / tg max.":"0.8 s","Adjustable response value current / tg min.":"0.05 s","Adjustable response value current / Isd max.":"6 000 A","Adjustable response value current / Isd min.":"480 A","Ground fault protection can be switched ON/OFF":"Yes","Neutral conductors / upgradeable/retrofittable":"No","Protective function of the overcurrent release":"LSIG","Switching capacity class of the circuit breaker":"C","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=615891&mlfb=3VA2440-7MQ32-0KK0"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-7MQ32-0KK0 and how is it quoted?","answer":"This MCCB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What is the closest functional second-source to 3VA2440-7MQ32-0KK0?","answer":"The 5SQ2370-2YA01 is a different frame and release family — it will not drop into a panel wired for the 3VA2440 without rewiring. Stick with the 3VA2440-7MQ32-0KK0 for a direct form-fit-function replacement."},{"question":"What are the key dimensions of 3VA2440-7MQ32-0KK0?","answer":"Height 248 mm, width 138 mm, depth 110 mm. That's a standard 3-pole MCCB footprint."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"The SENTRON 3VA series carries UL, CSA, CE, and IEC certifications per standard Siemens documentation. Specific RoHS and REACH declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7MQ32-0KK0","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/3VA2440-7MQ32-0KK0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}