{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1450-5GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1450-5GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1450-5GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1450-5GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1450-5GF42-0AA0, molded case circuit breaker, 4-pole, 500 A continuous at 40 °C, TM240 overcurrent release, 187 kA breaking at 240 V.","salesMarkdown":"It carries a continuous current rating of 500 A at 40 °C, and the TM240 overcurrent release means the thermal-magnetic trip unit is fixed at a 240 A frame rating, so this breaker is sized for feeders or main switches in the 500 A class. The 800 V rated insulation voltage confirms it is suitable for 480/277 V and 600/347 V systems common in North American and European installations. This MCCB delivers 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 11.9 kA at 690 V. For a 500 A feeder in a 480 V panel with an available fault current of, say, 65 kA, this breaker has headroom to spare. Above that, it derates linearly: 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, and 452 A at 70 °C (–). In a sealed, uncooled enclosure, ambient inside the panel can easily reach 55–60 °C — so if you are pulling near 500 A continuously, factor in the derating. The 122.7 W maximum power loss is the heat the breaker dissipates at full load; that heat must be removed from the enclosure to stay within the derating curve.","metaTitle":"Siemens 3VA1450-5GF42-0AA0 SENTRON MCCB, 500 A, 4-Pole","metaDescription":"Siemens SENTRON 3VA1450-5GF42-0AA0 molded case circuit breaker, 500 A rated at 40 °C, 4-pole, 187 kA at 240 V. Active 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","Height":"248 mm","Maximum":"5 000 A","Minimum":"2 500 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","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","Continuous Current / Rated Value":"500 A","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","Continuous Current / Rated Value / Maximum":"630 A","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c34ef6b5412ad0d33e0055c6d85bfb50.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569020&mlfb=3VA1450-5GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1450-5GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1450-5GF42-0AA0 and get a price?","answer":"This part is sourced and quoted 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 is the breaking capacity of this MCCB at 240 V?","answer":"The breaking capacity is 187 kA at 240 V AC, which is the highest interrupting rating this breaker offers across its voltage range."},{"question":"What are the physical dimensions of 3VA1450-5GF42-0AA0?","answer":"Width is 184 mm, height is 248 mm, and depth is 110 mm. These dimensions match the standard 4-pole SENTRON 3VA footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1450-5GF42-0AA0","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/3VA1450-5GF42-0AA0 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}}