{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1450-4EE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1450-4EE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1450-4EE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1450-4EE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1450-4EE42-0AA0, molded case circuit breaker, 4-pole, 500 A rated continuous current, TM220 thermal-magnetic overcurrent release, breaking capacity 121 kA at 240 V / 76 kA at 415 V.","salesMarkdown":"## SENTRON 3VM1450-4EE42-0AA0 — 500 A MCCB with TM220 Release The TM220 designation means the thermal pickup (Ir) is adjustable up to 500 A, and the magnetic short-circuit pickup (Ii) is fixed at 5000 A — ten times the rated current — providing instantaneous trip on high fault currents without intentional delay. Breaking capacity varies by system voltage: 121 kA at 240 V, 76 kA at both 415 V and 440 V, and 53 kA at 500 V. Above that, derate linearly: 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, and 452 A at 70 °C. For a panel with multiple breakers ganged in a confined enclosure, use the 60 °C column as the practical design limit unless forced-air ventilation is verified. Dimensions are 184 mm wide, 248 mm high, 110 mm deep — a 4-pole frame that occupies roughly 7.2 inches of DIN-rail width. Maximum power dissipation is 122.7 W at full rated current. Account for this in the enclosure thermal budget — at 500 A continuous, that heat must be removed to stay within the derating curve above. It is a straight thermal-magnetic breaker for branch-circuit or feeder protection in distribution panels.","metaTitle":"3VM1450-4EE42-0AA0 SENTRON MCCB, 500 A, 4-Pole, TM220 Releas","metaDescription":"Siemens SENTRON 3VM1450-4EE42-0AA0 molded case circuit breaker, 500 A rated continuous current, 4-pole, TM220 thermal-magnetic release. Breaking capacity 121 kA at 240 V, 76 kA at","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":"3VM1450-4EE42-0AA0","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":"500 A","at 45 °C":"500 A","at 50 °C":"500 A","at 55 °C":"488 A","at 60 °C":"476 A","at 65 °C":"464 A","at 70 °C":"452 A","Depth [in]":"4.3 in","Width [in]":"7.2 in","Height [in]":"9.8 in","description":"circuit breaker 3VM1 IEC frame 630 breaking capacity class N Icu=36kA @ 415V 4-pole, line protection TM220, ATFM, In=500A overload protection Ir=350A...500A short-circuit protection Ii=10 x In N conductor unprotected 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":"122.7 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"500 A","Rated insulation voltage Ui":"690 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM220","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"Without","Reference code / acc. to DIN EN 81346-2":"Q","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"500 A","Adjustable response value current / li max.":"5 000 A","Adjustable response value current / li min.":"5 000 A","Adjustable response value current / lr min.":"350 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Mechanical service life (switching cycles) / typical":"8 000","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/2878070f703cae6a21adac2d46c34435.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569129&mlfb=3VM1450-4EE42-0AA0"},"ai":{"faq":[{"question":"Where can I buy the 3VM1450-4EE42-0AA0 and get a price?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Submit a request for quotation; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of this MCCB at different voltages?","answer":"Breaking capacity is 121 kA at 240 V, 76 kA at both 415 V and 440 V, and 53 kA at 500 V. These are the maximum short-circuit currents the breaker can safely interrupt at each voltage level."},{"question":"What does the TM220 release mean on this breaker?","answer":"The TM220 is a thermal-magnetic overcurrent release. The thermal pickup (Ir) is adjustable up to 500 A, matching the breaker's rated continuous current. The magnetic short-circuit pickup (Ii) is fixed at 5000 A — ten times Ir — providing instantaneous trip on high fault currents."},{"question":"What are the mounting dimensions of the 3VM1450-4EE42-0AA0?","answer":"The breaker measures 184 mm wide, 248 mm high, and 110 mm deep. It mounts on a standard DIN rail and requires 7.2 inches of rail width for the 4-pole frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1450-4EE42-0AA0","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/3VM1450-4EE42-0AA0 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}}