{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-7GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-7GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-7GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-7GF42-0AA0, 4-pole molded case circuit breaker, 320 A rated current, TM240 thermal-magnetic release, 440 kA breaking capacity at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1332-7GF42-0AA0 is a 4-pole molded case circuit breaker rated for 320 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. It carries a 440 kA breaking capacity at 240 V, which drops to 242 kA at 415 V and 440 V, and 154 kA at 500 V — still 17 kA at 690 V. That SCCR headroom means it can be placed upstream of distribution panels without worrying about cascading faults, even on high-fault utility feeds. ## Thermal derating and real-world loading Above that, it derates linearly: 313 A at 55 °C, 306 A at 60 °C, 299 A at 65 °C, and 292 A at 70 °C. Power loss at full load hits 80.1 W, which adds to the enclosure heat budget. The breaker measures 248 mm high, 184 mm wide, and 110 mm deep. The 184 mm width for a 4-pole frame is standard for this class; it occupies roughly 7.24 inches of DIN-rail or mounting-plate width. The TM240 release is non-interchangeable in the field, so verify the trip curve against your load before mounting. A motor drive option is available as a factory or field accessory, which allows remote open/close without opening the door.","metaTitle":"Siemens 3VA1332-7GF42-0AA0 SENTRON MCCB, 320 A, 4-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1332-7GF42-0AA0 molded case circuit breaker, 320 A, 4-pole, TM240 release. 440 kA at 240 V. Current lifecycle. Sourced to order against RFQ.","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":"100%","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1093766&mlfb=3VA1332-7GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What overcurrent release does this MCCB use?","answer":"It uses a TM240 thermal-magnetic release, which is a fixed, non-interchangeable trip unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-7GF42-0AA0","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/3VA1332-7GF42-0AA0 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}}