{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1440-7MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1440-7MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1440-7MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1440-7MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1440-7MH32-0AA0, molded case circuit breaker, 3-pole, 400 A, TM120M overcurrent release, 440 kA at 240 V AC, IP40 front.","salesMarkdown":"## 400 A MCCB with TM120M — selectivity and motor protection in one frame Breaking capacity reaches 440 kA at 240 V AC, dropping to 242 kA at 415/440 V, 154 kA at 500 V, and 17 kA at 690 V — figures that govern fault-clearing capability at the point of common coupling. Maximum power loss is 76.8 W, which factors into enclosure ventilation sizing. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole MCCB footprint for panel-mount installation with IP40 protection on the front face.","metaTitle":"Siemens 3VA1440-7MH32-0AA0 SENTRON MCCB, 400 A, 3-Pole, TM12","metaDescription":"Siemens SENTRON 3VA1440-7MH32-0AA0 molded case circuit breaker, 400 A, 3-pole, TM120M release, 440 kA 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","title":"3VA1440-7MH32-0AA0","Height":"248 mm","Maximum":"400 A","Minimum":"400 A","at 240 V":"440 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"154 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 C Icu=110kA @ 415 V 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","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","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","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":"C","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/ca4cd2927214dec7d232ee646d47a6cc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1093775&mlfb=3VA1440-7MH32-0AA0"},"ai":{"faq":[{"question":"What does the TM120M release designation mean?","answer":"TM120M is a thermal-magnetic overcurrent release tuned for starter protection — the thermal element handles overloads, the magnetic element handles short-circuits, with a fixed magnetic trip threshold suitable for motor branch circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1440-7MH32-0AA0","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/3VA1440-7MH32-0AA0 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}}