{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-4GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-4GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-4GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-4GF42-0AA0, molded case circuit breaker, 4-pole, 320 A, TM240 thermal-magnetic release, line protection, 121 kA at 240 VAC interrupting rating.","salesMarkdown":"## Rating and interrupting performance Above that, the thermal curve steps down: 313 A at 55 °C, 306 A at 60 °C, 299 A at 65 °C, and 292 A at 70 °C. That matters for a warm panel — if the enclosure ambient runs at 55 °C, you lose 7 A of headroom from the nameplate. Interrupting capacity is given per voltage level: 121 kA at 240 VAC, 75.6 kA at both 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V. ## Construction and release Dimensions: 248 mm high, 184 mm wide, 110 mm deep. The 184 mm width is the panel cutout dimension to check — it is wider than a typical 3-pole MCCB of similar rating because this is a 4-pole frame. Verify the mounting footprint against the existing backplate or DIN-rail adapter before ordering. Maximum power dissipation at rated load is 80.1 W — factor that into the enclosure thermal calculation if the breaker is in a sealed cabinet with other heat sources.","metaTitle":"Siemens 3VA1332-4GF42-0AA0 SENTRON MCCB, 320 A, 4-Pole, 121","metaDescription":"Siemens 3VA1332-4GF42-0AA0 SENTRON molded case circuit breaker, 320 A, 4-pole, TM240 release. Rated 121 kA at 240 VAC, 75.6 kA at 415 V. Current lifecycle. Sourced to order against","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","Maximum":"320 A","Minimum":"320 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]":"7.24 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"4","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","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","design of the N-conductor protection":"100%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":"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":"https://cdn.aoctrl.com/ec0699dac94c61d6adb48cf3fb145727.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568986&mlfb=3VA1332-4GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA1332-4GF42-0AA0 at 415 V?","answer":"75.6 kA at 415 VAC. The same rating applies at 440 V. At 240 V it is 121 kA, at 500 V it is 52.5 kA, and at 690 V it is 11.9 kA."},{"question":"Does 3VA1332-4GF42-0AA0 have a ground-fault monitoring function?","answer":"No. This variant is built without ground-fault monitoring. It is a straight line-protection breaker with a TM240 thermal-magnetic release."},{"question":"Where can I buy 3VA1332-4GF42-0AA0 and how is it quoted?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-4GF42-0AA0","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/3VA1332-4GF42-0AA0 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}}