{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1450-5EF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1450-5EF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1450-5EF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1450-5EF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1450-5EF42-0AA0, molded case circuit breaker, 4-pole, 500 A at 40 °C, TM240 overcurrent release, 187 kA interrupting at 240 V.","salesMarkdown":"The 4-pole construction makes it the right choice for three-phase plus neutral applications where you need coordinated overcurrent and short-circuit protection on all four paths. Interrupting capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 11.9 kA at 690 V. Above that it steps down: 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, and 452 A at 70 °C. If your panel ambient runs 55 °C — common in sealed enclosures near ovens or in hot climates — you lose 12 A, not a showstopper for most loads. Dimensions: 184 mm wide, 248 mm tall, 110 mm deep. ## Panel wireman's fit check — 184 mm width, 4-pole, no comms If your spec calls for remote tripping or power monitoring, you'll need the accessory slot populated separately. The trip indicator is absent, so visual confirmation of a trip requires checking the handle position or adding an auxiliary contact. Ground-fault monitoring is not built in. For GF protection on the feeder, you'd add an external ground-fault relay and shunt trip, or step up to the 3VA with electronic release. This version is for straightforward line protection where the downstream devices handle ground-fault coordination.","metaTitle":"Siemens 3VA1450-5EF42-0AA0 SENTRON MCCB, 500 A, 4-Pole, TM24","metaDescription":"Siemens 3VA1450-5EF42-0AA0 SENTRON molded case circuit breaker, 500 A at 40 °C, 4-pole, TM240 release, 187 kA at 240 V. Current production. Quoted to order.","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":"3VA1450-5EF42-0AA0","Height":"248 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"11.9 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]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","description":"circuit breaker 3VA1 IEC frame 630 breaking capacity class M Icu=55kA @ 415V 4-pole, line protection TM240, ATAM, In=500A overload protection Ir=350A...500A short-circuit protection Ii=5...10 x In N conductor unprotected nut keeper kit","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":"122.7 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":"without","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":"M","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3942324b312d9b55eca2b7a7f6f9ec39.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569018&mlfb=3VA1450-5EF42-0AA0"},"ai":{"faq":[{"question":"Where can I buy the 3VA1450-5EF42-0AA0 and how is it quoted?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key interrupting ratings for this breaker?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 11.9 kA at 690 V. The 187 kA at 240 V is the standout spec for high-fault industrial services."},{"question":"What is the physical size of the 3VA1450-5EF42-0AA0?","answer":"184 mm wide, 248 mm tall, 110 mm deep. The 184 mm width for a 4-pole frame is standard; verify your backpanel stud spacing before mounting."},{"question":"Does this breaker include ground-fault protection?","answer":"No, this version is without ground-fault monitoring. For GF protection, add an external relay and shunt trip, or use a 3VA with electronic release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1450-5EF42-0AA0","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/3VA1450-5EF42-0AA0 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}}