{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1332-4GE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1332-4GE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1332-4GE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1332-4GE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1332-4GE42-0AA0, Molded case circuit breaker, 4-pole, 320 A at 40 °C, TM220 LI trip unit, 121 kA at 240 V AC, IP40 front.","salesMarkdown":"## Siemens SENTRON 3VM1332-4GE42-0AA0 — 320 A, 4-Pole MCCB with TM220 Trip Unit The Siemens SENTRON 3VM1332-4GE42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying 320 A continuously at 40 °C through 50 °C ambient, then derating to 292 A at 70 °C. Its TM220 thermal-magnetic trip unit provides LI protection — fixed thermal overload plus adjustable short-circuit pickup up to 3,200 A. Breaking capacity reaches 121 kA at 240 V AC, 76 kA at 415/440 V, and 53 kA at 500 V, giving it strong fault-clearing headroom for industrial distribution panels. ## Current Ratings and Thermal Derating Above that, it steps down: 313 A at 55 °C, 306 A at 60 °C, 299 A at 65 °C, and 292 A at 70 °C. ## Breaking Capacity and Voltage Ratings Rated insulation voltage Ui is 690 V AC. Maximum rated operational voltage on DC is 500 V. The interrupting ratings cover common industrial supply voltages: 121 kA at 240 V AC, 76 kA at 415 V and 440 V AC, and 53 kA at 500 V AC. These figures support selective coordination downstream — the high 240 V rating is useful for large step-down transformer secondaries in North American panels. ## Trip Unit and Protection Functions The TM220 overcurrent release provides LI protection: fixed thermal overload (L) and adjustable instantaneous short-circuit (I) pickup, settable up to 3,200 A. No ground-fault monitoring is built in. No communication function or motor drive option is available on this version. ## Physical Integration and Environment The 4-pole footprint matches standard Siemens SENTRON MCCB cutouts; verify the mounting pattern against your existing panel drill plan before ordering.","metaTitle":"Siemens SENTRON 3VM1332-4GE42-0AA0 MCCB, 320 A, 4-Pole, TM22","metaDescription":"Siemens SENTRON 3VM1332-4GE42-0AA0 molded case circuit breaker, 320 A rated at 40 °C, 4-pole, TM220 trip unit, 121 kA at 240 V. Active 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","title":"3VM1332-4GE42-0AA0","Height":"248 mm","at 240 V":"121 kA","at 415 V":"76 kA","at 440 V":"76 kA","at 500 V":"53 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]":"4.3 in","Width [In]":"7.2 in","Height [In]":"9.8 in","description":"circuit breaker 3VM1 IEC frame 400 breaking capacity class N Icu=36kA @ 415V 4-pole, line protection TM220, ATFM, In=320A overload protection Ir=224A...320A short-circuit protection Ii=10 x In N conductor protection 100% nut keeper kit","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 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"690 V","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM220","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available under Service & Support in the last chapter","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"3 200 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":"S","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/86cbb92bc3ad6bdc48e958b7e3ce540a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569103&mlfb=3VM1332-4GE42-0AA0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VM1332-4GE42-0AA0 at 415 V?","answer":"The breaking capacity is 76 kA at 415 V AC, matching the rating at 440 V. At 240 V it reaches 121 kA, and at 500 V it is 53 kA."},{"question":"What trip unit does this MCCB use?","answer":"It uses a TM220 thermal-magnetic overcurrent release providing LI protection — fixed thermal overload and adjustable short-circuit pickup up to 3,200 A."},{"question":"Where can I buy 3VM1332-4GE42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the depth of 3VM1332-4GE42-0AA0?","answer":"The depth is 110 mm (4.3 in). Overall dimensions are 248 mm high by 184 mm wide."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1332-4GE42-0AA0","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/3VM1332-4GE42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}