{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-0MN32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-0MN32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-0MN32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-0MN32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-0MN32-0AA0, molded case circuit breaker, 3-pole, 400 A, ETU350M electronic release, 440 kA at 415 V, motor protection design.","salesMarkdown":"## MCCB with real headroom for motor circuits The Siemens SENTRON 3VA2440-0MN32-0AA0 is a 3-pole molded case circuit breaker rated for 400 A continuous current, with a breaking capacity of 440 kA at 415 V — that's the kind of short-circuit rating that lets you place this breaker close to the transformer without worrying about cascading failures upstream. It's designed specifically for motor protection, so the ETU350M electronic release gives you adjustable trip classes of 10A, 10E, and 20E, meaning you can dial in the overload curve to match the starting characteristics of your motor load — pump, conveyor, or compressor — without nuisance tripping on inrush. ## Sizing and thermal performance That's flat derating across the typical panel temperature range — you don't have to oversize the frame just because the enclosure runs hot. That storage range matters if you're staging spares in an unheated warehouse — it won't degrade sitting through a cold winter. That's a standard MCCB form factor for the 400 A frame class — it'll drop into a typical DIN-rail or panel-mount arrangement without surprises. The width is the critical dimension for multi-breaker lineups; 138 mm per pole set means you can calculate your backpanel real estate in advance.","metaTitle":"Siemens 3VA2440-0MN32-0AA0 SENTRON MCCB, 400 A, 440 kA at 41","metaDescription":"Siemens SENTRON 3VA2440-0MN32-0AA0 molded case circuit breaker, 400 A continuous, 440 kA breaking capacity at 415 V. Motor protection design with ETU350M release. Current productio","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":"17 s","Minimum":"4 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","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Motor protection","Communication Function":"No","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":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","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":"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":"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=1417865&mlfb=3VA2440-0MN32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-0MN32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-0MN32-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the breaking capacity of 3VA2440-0MN32-0AA0?","answer":"It is rated 440 kA at 415 V and 187 kA at 690 V, giving substantial short-circuit withstand for motor branch circuits."},{"question":"What trip classes are available on this MCCB?","answer":"The ETU350M electronic release offers adjustable trip classes 10A, 10E, and 20E, letting you match the overload curve to motor starting characteristics."},{"question":"Does this breaker include phase failure protection?","answer":"Yes, phase failure detection is built in — it will trip on loss of a phase to prevent motor single-phasing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-0MN32-0AA0","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/3VA2440-0MN32-0AA0 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}}