{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-4EF32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-4EF32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-4EF32-0AA0, molded case circuit breaker, 3-pole, 320 A, TM240 release, 121 kA breaking capacity at 240 V AC.","salesMarkdown":"The Siemens 3VA1332-4EF32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 320 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release adjustable from 1 600 A to 3 200 A. It breaks up to 121 kA at 240 V AC, 75.6 kA at 415 V AC, and 75.6 kA at 440 V AC, with a rated insulation voltage of 800 V. The 121 kA at 240 V and 75.6 kA at 415 V mean this breaker can safely interrupt high-fault currents typical in large distribution panels without cascading upstream — it holds its SCCR at those levels. At 500 V the capacity drops to 52.5 kA, and at 690 V to 11.9 kA, so for 690 V applications verify the available fault current is below that threshold. The continuous current holds at 320 A from 40 °C through 50 °C ambient; above that it derates linearly to 292 A at 70 °C. ## Panel fit and approvals At 138 mm wide by 248 mm tall by 110 mm deep, this MCCB occupies a standard 3-pole MCCB cutout. The TM240 release is fixed-trip thermal and magnetic, not electronic, so coordination studies should use the published time-current curves for the TM240.","metaTitle":"Siemens 3VA1332-4EF32-0AA0 SENTRON MCCB, 320 A, 3-Pole, 121","metaDescription":"Siemens 3VA1332-4EF32-0AA0 SENTRON molded case circuit breaker, 320 A rated, 3-pole, 121 kA at 240 V. Active production. Quoted 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":"138 mm","Height":"248 mm","Maximum":"3 200 A","Minimum":"1 600 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 kA","at 690 V":"11.9 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]":"5.43 in","Height [In]":"9.76 in","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":"Line protection","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","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"320 A","Insulation Voltage / Rated Value":"800 V","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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568983&mlfb=3VA1332-4EF32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1332-4EF32-0AA0?","answer":"Submit an RFQ through this listing. The part is sourced through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1332-4EF32-0AA0 at 415 V?","answer":"75.6 kA at 415 V AC, and the same at 440 V. At 240 V it reaches 121 kA."},{"question":"What overcurrent release does this MCCB use?","answer":"A TM240 thermal-magnetic release, adjustable from 1 600 A to 3 200 A on the magnetic pickup. The thermal element is fixed at 320 A continuous rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0AA0","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/3VA1332-4EF32-0AA0 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}}