{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-3EF32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-3EF32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-3EF32-0BH0, molded case circuit breaker, 3-pole, 50 A (40 °C), 75.6 kA at 240 V, line protection, undervoltage release, 2 aux + 1 trip alarm switch.","salesMarkdown":"It is a 3-pole unit rated 50 A at 40 °C, with a rated insulation voltage of 800 V, and it carries an undervoltage release (UVR) plus a 2-auxiliary-switch + 1-trip-alarm-switch block built in. This MCCB delivers 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V. For a 480 V panel in North America, the 32 kA at 440 V figure governs (480 V is the line-to-line nominal; the actual fault test voltage is typically 480/277 V, but the closest published rating is 440 V). ## Thermal derating — don't size at the 40 °C number alone Above that it derates: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If this MCCB lives in a non-air-conditioned enclosure near a transformer or drive, the 45–48 A range is the real continuous limit. The maximum power loss is 17.1 W — that's the heat the breaker dumps into the enclosure, which matters for thermal rise calculations in a sealed panel.","metaTitle":"Siemens 3VA1150-3EF32-0BH0 SENTRON MCCB, 50 A, 75.6 kA at 24","metaDescription":"Siemens SENTRON 3VA1150-3EF32-0BH0 molded case circuit breaker, 3-pole, 50 A rated at 40 °C, 75.6 kA breaking capacity at 240 V. Active production, sourced to order. Request a quot","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 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":"Yes","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":"3VA11503EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","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":"3VA9608-0BB11","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"N","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=297542&mlfb=3VA1150-3EF32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-3EF32-0BH0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Submit a request for quote (RFQ) to confirm current availability and pricing."},{"question":"What are the key ratings for 3VA1150-3EF32-0BH0?","answer":"It is a 3-pole MCCB rated 50 A at 40 °C, with a breaking capacity of 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V. It includes an undervoltage release and a 2-auxiliary-switch plus 1-trip-alarm-switch block."},{"question":"What is the physical size of 3VA1150-3EF32-0BH0?","answer":"The dimensions are 130 mm height, 76.2 mm width, and 70 mm depth — a standard 3-pole MCCB footprint for panel mounting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0BH0","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/3VA1150-3EF32-0BH0 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}}