{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7MQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7MQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7MQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7MQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 molded case circuit breaker, 3VA2440-7MQ32-0AA0, 400 A, 3-pole, motor protection design, 330 kA interrupting capacity at 240 V.","salesMarkdown":"## What this 400 A MCCB does on your line That means it holds its full 400 A rating in a warm panel, not just on a cool bench. Three-pole construction with motor protection design, so it's built to handle induction motor starts and overload profiles, not just resistive heater banks. Interrupting capacity hits 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 9 kA at 690 V. ## Sourcing and lifecycle — still a current-production part This 3VA2440-7MQ32-0AA0 carries a lifecycle status of 'current', meaning Siemens still manufactures it as an active catalog item. No last-time-buy notice, no successor code to track — it's the standard offering in the 3VA2 motor-protection MCCB family. For BOM freeze or PCN-watch purposes, this is a stable line. The 3VA2 series has been the SENTRON MCCB platform for several years; no phase-out signals on this rating. That 110 mm depth is the critical number for shallow backpanel enclosures — verify your cabinet depth clears it with wiring space behind. Communication function is built in — this variant supports the 3VA2 communication module for remote trip indication and power monitoring over PROFIBUS or PROFINET, depending on the plug-in module selected separately. No separate voltage trigger or undervoltage release on this order code; those are add-on accessories. ## Protection settings and trip characteristics Adjustable overload protection: initial value set at 80 A, full-scale value 400 A. That's a 5:1 adjustment range — you can dial the thermal-magnetic trip down to 80 A for a smaller motor or up to 400 A for the full frame rating. Short-time delay adjustable from 3 s minimum to 25 s maximum, giving selectivity coordination with downstream breakers. Short-circuit withstand: limited to 5 kA at 1 second — this is the short-time withstand rating for selective coordination. No trip indicator, so remote signaling requires the communication module or auxiliary contacts.","metaTitle":"Siemens 3VA2440-7MQ32-0AA0 SENTRON MCCB, 400 A, 3-Pole","metaDescription":"Siemens 3VA2440-7MQ32-0AA0 SENTRON molded case circuit breaker, 400 A rated at 40°C, 3-pole, 330 kA interrupting at 240 V. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"25 s","Minimum":"3 s","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]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"3","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":"Motor protection","Communication Function":"Yes","Phase Failure Detection":"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":"Summation current formation L-conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10/10E, 20/ 20E, 30/30E","Design Of The Overcurrent Release":"ETU860M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"90 000 W","operating power / at AC-3 / at 400 V":"160 000 W","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=569919&mlfb=3VA2440-7MQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7MQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA2440-7MQ32-0AA0 and how is it quoted for volume purchases?","answer":"This MCCB is sourced and quoted to order through independent industrial distribution. Submit an RFQ for current pricing and availability — no minimums, but volume pricing applies at quantity breaks."},{"question":"What is the interrupting capacity of 3VA2440-7MQ32-0AA0 at 240 V?","answer":"330 kA at 240 V, which covers high-fault installations near transformers or large motor banks."},{"question":"What compliance documentation does this brand provide for 3VA2440-7MQ32-0AA0?","answer":"Siemens SENTRON MCCBs typically carry UL 489, CSA C22.2 No. 5, IEC 60947-2, and CE marking. RoHS and REACH declarations are available from Siemens documentation. Specific certification markings should be verified against the nameplate on the unit received."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7MQ32-0AA0","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/3VA2440-7MQ32-0AA0 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}}