{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-4EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-4EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-4EF32-0DA0, molded case circuit breaker, 3-pole, 50 A, line protection, undervoltage release, 121 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1150-4EF32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 50 A continuously at 40 °C ambient without derating. Per the datasheet, the TM240 overcurrent release is a thermal-magnetic type, so it handles sustained overloads thermally and short-circuit faults magnetically — no electronic adjustment, no communication module. Breaking capacity is specified per IEC 60947-2 across multiple voltage levels: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA figure at 240 V is high for a 50 A frame — it tells you this breaker can interrupt very high fault currents on the secondary side of a distribution transformer without welding contacts or rupturing the case. The 11.9 kA at 690 V is the limiting value for three-phase industrial supplies at that voltage. Rated current holds at 50 A from 40 °C through 50 °C, then begins a gradual derating curve: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your panel ambient runs above 50 °C, you lose roughly 1 A per 5 °C rise. The maximum power loss is 17.1 W, which is modest for a 50 A MCCB — that heat has to be dissipated into the enclosure, so factor it into your thermal budget if the panel is densely packed. Physical dimensions are 76.2 mm wide, 130 mm tall, and 70 mm deep. That 76.2 mm width is a standard 3-pole MCCB footprint — it fits a typical DIN-rail or panel-mount cutout without surprises.","metaTitle":"Siemens SENTRON 3VA1150-4EF32-0DA0 MCCB, 50 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1150-4EF32-0DA0 molded case circuit breaker, 50 A rated at 40 °C, 3-pole, 121 kA breaking at 240 V. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"49 A","at 60 °C":"48 A","at 65 °C":"46 A","at 70 °C":"45 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"17.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11504EF320AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=179385&mlfb=3VA1150-4EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-4EF32-0DA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ to receive current pricing and a delivery commitment — no stock count or price is published here."},{"question":"What is 3VA1150-4EF32-0DA0's rated current at 40 °C?","answer":"The rated current is 50 A at 40 °C ambient, holding steady through 50 °C before beginning a derating curve."},{"question":"What is the breaking capacity of 3VA1150-4EF32-0DA0 at 415 V?","answer":"Breaking capacity is 75.6 kA at 415 V per IEC 60947-2. At 240 V it is 121 kA, and at 690 V it is 11.9 kA."},{"question":"What are the physical dimensions of 3VA1150-4EF32-0DA0?","answer":"Width is 76.2 mm, height is 130 mm, and depth is 70 mm. The width matches the standard 3-pole MCCB footprint."},{"question":"Does 3VA1150-4EF32-0DA0 include an undervoltage release?","answer":"Yes, the auxiliary release is an undervoltage release (UVR), which trips the breaker when control voltage drops below the dropout threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0DA0","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/3VA1150-4EF32-0DA0 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}}