{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-7EF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-7EF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-7EF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7EF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-7EF42-0AA0, molded case circuit breaker, 4-pole, 320 A at 40 °C, 440 kA breaking capacity at 240 V, TM240 overcurrent release.","salesMarkdown":"## What this MCCB does for a panel The Siemens SENTRON 3VA1332-7EF42-0AA0 is a 4-pole molded case circuit breaker rated for 320 A continuous at 40 °C, with a TM240 thermal-magnetic overcurrent release. It's built for line protection in distribution panels where you need high interrupting capacity — 440 kA at 240 V, 242 kA at 415 V, and still 17 kA all the way up at 690 V. That kind of SCCR headroom means it can sit upstream of a fault without taking the whole feeder down, which is the whole point of selective coordination in an industrial plant. The 320 A rating holds flat from 40 °C through 50 °C, then starts to taper: 313 A at 55 °C, 306 A at 60 °C, 299 A at 65 °C, and 292 A at 70 °C. ## Mounting and footprint The breaker measures 248 mm high, 184 mm wide, and 110 mm deep — a 4-pole frame that'll need a solid backplate or DIN-rail adapter.","metaTitle":"Siemens 3VA1332-7EF42-0AA0 SENTRON MCCB, 320 A, 4-Pole, 440","metaDescription":"Siemens SENTRON 3VA1332-7EF42-0AA0 molded case circuit breaker, 320 A rated current, 4-pole, 440 kA breaking capacity 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":"184 mm","Height":"248 mm","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":"320 A","at 45 °C":"320 A","at 50 °C":"320 A","at 55 °C":"313 A","at 60 °C":"306 A","at 65 °C":"299 A","at 70 °C":"292 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"80.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"320 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM240","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","design of the N-conductor protection":"Without","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"3 200 A","Adjustable response value current / li min.":"1 600 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"400 A","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0336227b7c9215de12dac6af2167ac8e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1093763&mlfb=3VA1332-7EF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7EF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at different voltages?","answer":"The 3VA1332-7EF42-0AA0 delivers 440 kA at 240 V, 242 kA at 415 V and 440 V, 154 kA at 500 V, and 17 kA at 690 V."},{"question":"Where can I buy 3VA1332-7EF42-0AA0 and get a price?","answer":"This part is sourced to order through our independent distribution channel. Submit an RFQ for current pricing and availability — both are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-7EF42-0AA0","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/3VA1332-7EF42-0AA0 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}}