{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1450-4GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1450-4GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1450-4GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1450-4GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1450-4GF42-0AA0, molded case circuit breaker, 500 A, 4-pole, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"## What this 500 A MCCB brings to a panel Four poles give you the option to switch a neutral or protect a three-phase plus neutral system in a single envelope, common in North American and IEC distribution panels where the neutral needs isolation. The 500 A frame carries a 500 A minimum rating. ## Breaking capacity — what the voltage columns tell you This breaker delivers 121 kA at 240 V, 75.6 kA at 415/440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V — the interrupting rating drops as voltage climbs, which is typical for a thermal-magnetic MCCB. The 121 kA at 240 V is especially useful on the secondary side of a step-down transformer where fault current can spike; the 690 V rating at 11.9 kA covers 600 V class systems but watch the available fault current at that voltage. ## Temperature derating — real-world continuous current At 55 °C it derates to 488 A, at 60 °C to 476 A, at 65 °C to 464 A, and at 70 °C to 452 A. The 184 mm width is the critical dimension for multi-breaker lineup spacing; verify your bus bar centers before committing the layout. ## What the TM240 release means for coordination The TM240 designation indicates a thermal-magnetic trip unit with a 240 A fixed rating. The breaker itself is rated 500 A continuous. Confirm the trip unit setting matches your load.","metaTitle":"Siemens 3VA1450-4GF42-0AA0 SENTRON MCCB, 500 A, 4-Pole","metaDescription":"Siemens SENTRON 3VA1450-4GF42-0AA0 molded case circuit breaker, 500 A, 4-pole, TM240 release. Breaking capacity 121 kA at 240 V. Current production. Sourced to order. Request quote","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":"3VA1450-4GF42-0AA0","Height":"248 mm","Maximum":"500 A","Minimum":"500 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":"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 S Icu=36kA @ 415V 4-pole, line protection TM240, ATAM, In=500A overload protection Ir=350A...500A short-circuit protection Ii=5...10 x In N conductor protection 100% 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":"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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb0250b9d2584087edcc6059e4a1bca8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569016&mlfb=3VA1450-4GF42-0AA0"},"ai":{"faq":[{"question":"What is the depth of 3VA1450-4GF42-0AA0?","answer":"110 mm (4.33 in). That's the body depth excluding handle throw and rear connection lugs."},{"question":"What is the width of 3VA1450-4GF42-0AA0?","answer":"184 mm (7.24 in). This is the critical dimension for multi-unit panel spacing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1450-4GF42-0AA0","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/3VA1450-4GF42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}