{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-4EF32-0DG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-4EF32-0DG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0DG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0DG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-4EF32-0DG0, molded case circuit breaker, 3-pole, 320 A at 40 °C, 121 kA breaking capacity at 240 V, line protection design, with undervoltage release and auxiliary switch.","salesMarkdown":"It carries a rated current of 320 A at 40 °C and delivers a breaking capacity of 121 kA at 240 V, scaling down to 75.6 kA at 415 V and 52.5 kA at 500 V. This is an active-production unit — lifecycle status is current, so it remains a standard catalog item through normal Siemens distribution channels. The 320 A rating holds flat from 40 °C through 50 °C, then derates linearly to 292 A at 70 °C. Breaking capacity of 121 kA at 240 V and 75.6 kA at 415 V puts this breaker squarely in high-fault-current applications — large transformer secondaries, industrial mains, or busway feeds where available fault current exceeds typical 65 kA MCCB ratings. The 11.9 kA figure at 690 V is still adequate for most 690 V industrial systems, but verify against your transformer impedance. ## Integrated accessories and wiring The trip indicator is present, so a visual flag shows whether the breaker tripped on fault versus being manually opened — helpful for fault isolation on a live panel without metering. No communication module or ground-fault monitoring is included. This is a line-protection breaker without integrated metering or networking.","metaTitle":"Siemens SENTRON 3VA1332-4EF32-0DG0 MCCB, 320A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA1332-4EF32-0DG0 molded case circuit breaker, 320A at 40°C, 3-pole, 121kA breaking at 240V. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"0 A","Minimum":"0 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":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"82.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA13324EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HP","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","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","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB11","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=1415000&mlfb=3VA1332-4EF32-0DG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0DG0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation is available for this MCCB?","answer":"As a Siemens SENTRON product, it carries UL, CSA, and IEC certifications standard for the series. Specific RoHS and REACH declarations are available from Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0DG0","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/3VA1332-4EF32-0DG0 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}}