{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-0MS32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-0MS32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-0MS32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-0MS32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-0MS32-0AA0, molded case circuit breaker, 400 A, 3-pole, ETU310M electronic trip unit, 440 kA at 415 V, motor protection design.","salesMarkdown":"The Siemens SENTRON 3VA2440-0MS32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current, designed specifically for motor protection with an ETU310M electronic overcurrent release. Its interrupting capacity hits 440 kA at 415 V and 187 kA at 690 V, meaning it can clear a massive fault without the arc flash escalating — critical for high-fault panels feeding motor control centers. The adjustable trip range spans 600 A to 5 200 A, so you can dial it in for the motor's locked-rotor current without swapping the breaker body. Mounts in a standard panel on a DIN rail or bolted bus — footprint is 138 mm wide, 248 mm tall, 110 mm deep, which is a common 3-pole frame size for this class. Front face is IP40 rated, fine for clean indoor switchgear; no washdown protection, so keep it out of wet environments. Operates from -25 °C to 70 °C ambient, and the current rating holds at 400 A all the way up to 70 °C — no derating needed in a warm panel. ## What the trip unit means for the job No undervoltage release, no phase-failure detection, no communication function built in — this is a standalone thermal-magnetic replacement for a motor starter feeder.","metaTitle":"Siemens 3VA2440-0MS32-0AA0 SENTRON MCCB, 400 A, 440 kA at 41","metaDescription":"Siemens SENTRON 3VA2440-0MS32-0AA0 molded case circuit breaker, 400 A rated, 440 kA breaking capacity at 415 V, ETU310M trip unit. Current production. Sourced to order.","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","title":"3VA2440-0MS32-0AA0","Height":"248 mm","Maximum":"5 200 A","Minimum":"600 A","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","description":"circuit breaker 3VA2 IEC frame 630 breaking capacity class E Icu=200 kA @ 415 V 3-pole motor starter protection ETU310M, I, In=400A short circuit protection Ii=3...13 x In busbar connection","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":"No","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","Design Of The Overcurrent Release":"ETU310M","protection class IP / on the front":"IP40","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":"I","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,"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=1417668&mlfb=3VA2440-0MS32-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-0MS32-0AA0?","answer":"This part is sourced to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of this MCCB?","answer":"440 kA at 415 V and 187 kA at 690 V, making it suitable for high-fault-current panels."},{"question":"What are the mounting dimensions?","answer":"Width 138 mm, height 248 mm, depth 110 mm — a standard 3-pole frame size."},{"question":"Does this breaker include ground-fault protection?","answer":"No, this variant ships without ground-fault monitoring (version 'Without')."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-0MS32-0AA0","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/3VA2440-0MS32-0AA0 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}}