{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-3EF46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-3EF46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-3EF46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-3EF46-0AA0, Molded case circuit breaker, 4-pole, 50 A at 40 °C, TM240 overcurrent release, 75.6 kA at 240 V, IP40 front.","salesMarkdown":"## MCCB for line protection — 50 A, 4-pole, TM240 release Breaking capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — figures that give solid SCCR headroom for most industrial and commercial panelboards fed from a transformer of typical impedance. The 70 mm depth and 101.6 mm width (4-inch standard MCCB footprint) mean it fits existing 4-pole breaker slots in SENTRON and most third-party distribution boards without re-drilling the mounting plate. Current rating holds at 50 A from 40 °C up to 50 °C ambient, then derates linearly: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, 45 A at 70 °C. If your panel internal ambient runs above 50 °C (tight enclosure, solar load, adjacent heat sources), size the upstream conductor and breaker for the derated value — the 45 A at 70 °C floor is the worst-case continuous current this breaker can carry without nuisance tripping. Maximum power loss is 14.6 W — modest for a 4-pole 50 A MCCB. In a densely packed panel, that's one less heat source to factor into the thermal budget; you can usually skip forced ventilation unless the enclosure is sealed and full of other dissipating devices. The 75.6 kA at 240 V is the headline number for North American panels where the line-to-neutral fault current is the binding constraint; the 52.5 kA at 415 V covers European 400 V three-phase systems.","metaTitle":"Siemens SENTRON 3VA1150-3EF46-0AA0 MCCB, 50A, 4-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1150-3EF46-0AA0 molded case circuit breaker, 50A rated at 40°C, 4-pole, 75.6kA breaking at 240V. Active production. Sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 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]":"4 in","Height [In]":"5.12 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":"14.6 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":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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/38893e0bb6ba69f54245cc63b5a13560.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=494483&mlfb=3VA1150-3EF46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF46-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-3EF46-0AA0","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/3VA1150-3EF46-0AA0 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}}