{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1440-6MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1440-6MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1440-6MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1440-6MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1440-6MH32-0AA0, 3-pole molded case circuit breaker, 400 A continuous, TM120M release, 220 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1440-6MH32-0AA0 is a 3-pole molded case circuit breaker rated for 400 A continuous current at 40 °C to 50 °C ambient, with a TM120M thermal-magnetic overcurrent release. Its interrupting capacity hits 220 kA at 240 VAC, 154 kA at 415 V and 440 V, 121 kA at 500 V, and 17 kA at 690 V — so it handles high-fault utility feeds and transformer secondaries without cascading upstream. Designed as a starter protector, it's a fit for motor branch circuits where you need coordinated short-circuit and overload protection in one package. If your spec calls for those, you add external accessories or choose a different variant. The absence of a trip indicator means you'll need a panel meter or status lamp to confirm the breaker state remotely. ## Thermal derating — what the numbers mean At 55 °C it's 392 A, at 60 °C it's 384 A, at 65 °C it's 376 A, and at 70 °C it's 367 A (–). Max power loss is 76.8 W — that heat has to leave the panel, so don't bury it in a sealed box without ventilation. ## Panel fit The 3-pole footprint is compact for a 400 A MCCB; check your gland plate and busbar spacing before committing the cutout. No communication function means no auxiliary wiring for remote monitoring unless you add an external accessory.","metaTitle":"Siemens 3VA1440-6MH32-0AA0 SENTRON MCCB, 400A, 220kA at 240V","metaDescription":"Siemens SENTRON 3VA1440-6MH32-0AA0 molded case circuit breaker, 3-pole, 400A continuous, 220kA interrupting at 240VAC. Current lifecycle stage. Quoted 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":"3VA1440-6MH32-0AA0","Height":"248 mm","Maximum":"4 800 A","Minimum":"2 400 A","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"154 kA","at 500 V":"121 kA","at 690 V":"17 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"392 A","at 60 °C":"384 A","at 65 °C":"376 A","at 70 °C":"367 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","description":"circuit breaker 3VA1 IEC frame 630 breaking capacity class H Icu=70kA @ 415V 3-pole, starter protection TM120M, AM, In=400A without overload protection short-circuit protection Ii=8...16 x In nut keeper kit","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":"Starter protection","Communication Function":"No","Phase Failure Detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"76.8 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":"TM120M","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","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":"H","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","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/432cf01bbef45253051db55baaf8f83b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569012&mlfb=3VA1440-6MH32-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VA1440-6MH32-0AA0 and get current pricing?","answer":"We source this part to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What are the interrupting ratings for 3VA1440-6MH32-0AA0 at different voltages?","answer":"At 240 V it's 220 kA, at 415 V and 440 V it's 154 kA, at 500 V it's 121 kA, and at 690 V it's 17 kA (–)."},{"question":"What is the continuous current rating of 3VA1440-6MH32-0AA0?","answer":"400 A continuous from 40 °C to 50 °C ambient (–). It derates to 367 A at 70 °C."},{"question":"What overcurrent release does 3VA1440-6MH32-0AA0 use?","answer":"It uses a TM120M thermal-magnetic release. That's a fixed-trip unit — no interchangeable rating plugs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1440-6MH32-0AA0","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/3VA1440-6MH32-0AA0 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}}