{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-0MQ32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-0MQ32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-0MQ32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-0MQ32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-0MQ32-0AA0, molded case circuit breaker, 3-pole, 400 A rated continuous current, 440 kA breaking capacity at 415 V, motor protection design with adjustable trip class.","salesMarkdown":"The adjustable trip class (10A, 10/10E, 20/20E, 30/30E) lets you match the thermal curve to the motor's starting profile, so nuisance tripping on inrush is avoided while still protecting the winding. ## Motor protection design and ground-fault monitoring This MCCB is explicitly designed for motor protection, meaning its trip characteristics are optimized for the high inrush and thermal behavior of induction motors. That ground-fault scheme measures the vector sum of the phase currents — if it's non-zero, leakage is present. It's a common approach in European-style motor feeders where residual current devices aren't always installed per phase. ## Communication and additional functions The breaker has communication capability and other measurement functions, which means it can report status, current draw, and trip events to a PLC or BMS over a fieldbus — typical for a SENTRON 3VA with a communication module. This turns a passive protective device into a data point for predictive maintenance and load monitoring. Depth of 110 mm means it clears most standard gland plates without a spacer.","metaTitle":"Siemens 3VA2440-0MQ32-0AA0 SENTRON MCCB, 400 A, 440 kA at 41","metaDescription":"Siemens SENTRON 3VA2440-0MQ32-0AA0 molded case circuit breaker, 400 A rated, 440 kA breaking capacity at 415 V, motor protection design. Quoted to order against an 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":"138 mm","Height":"248 mm","Maximum":"25 s","Minimum":"3 s","at 415 V":"440 kA","at 690 V":"187 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":"E","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=1417667&mlfb=3VA2440-0MQ32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-0MQ32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2440-0MQ32-0AA0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is 3VA2440-0MQ32-0AA0's breaking capacity at 415 V?","answer":"440 kA at 415 V, which is a very high interrupting rating suitable for installations with high available fault current, such as near large transformers or in heavy industrial switchgear."},{"question":"What compliance documentation does this brand provide for 3VA2440-0MQ32-0AA0?","answer":"As a Siemens SENTRON product, it carries the usual CE marking for the European market and is designed to IEC/EN 60947-2. RoHS and REACH declarations are standard from Siemens for this series."},{"question":"Will 3VA2440-0MQ32-0AA0 drop into a panel that was specified around 5SQ2370-2YA05 without rewiring?","answer":"The 5SQ2370-2YA05 is a different form factor and mounting arrangement — it's a withdrawable or fixed version from a different series. The 3VA2440-0MQ32-0AA0 is a fixed-mount MCCB with a 138 mm width and 110 mm depth; you would need to verify the busbar spacing and mounting holes, as they are not direct drop-in replacements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-0MQ32-0AA0","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/3VA2440-0MQ32-0AA0 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}}