{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-4EF32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-4EF32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-4EF32-0JA0, molded case circuit breaker, 3-pole, 50 A (40 °C), 121 kA at 240 V, line protection, shunt trip release.","salesMarkdown":"Its breaking capacity reaches 121 kA at 240 V and 75.6 kA at 415 V, with a rated insulation voltage of 800 V. The 50 A rating is maintained from 40 °C up to 50 °C, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. This thermal derating curve matters when the breaker is mounted in a warm enclosure or alongside other heat-generating devices — the actual continuous current it can carry drops as ambient rises. The 121 kA breaking capacity at 240 V and 75.6 kA at 415 V mean this MCCB can safely interrupt high fault currents typical of large transformer-fed panels or motor control centers. At 500 V and 690 V the capacity is 11.9 kA, so verify the available fault current at the point of installation if the system voltage is above 440 V. The undervoltage release is not fitted, so if undervoltage protection is required, a different variant or an add-on accessory is needed. ## Panel integration The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep, fitting standard 3-pole MCCB panel cutouts. Power loss is 14.6 W maximum, which should be factored into enclosure thermal calculations to avoid exceeding the 70 °C maximum operating temperature.","metaTitle":"Siemens 3VA1150-4EF32-0JA0 SENTRON MCCB, 50 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1150-4EF32-0JA0 molded case circuit breaker, 50 A rated at 40 °C, 3-pole, 121 kA breaking capacity at 240 V. Active production, quoted to order.","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":"Yes","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","Of The Supplied Basic Switch":"3VA11504EF320AA0","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL32","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=94963&mlfb=3VA1150-4EF32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA1150-4EF32-0JA0 include an undervoltage release?","answer":"No, this variant does not include an undervoltage release. It is fitted with a shunt trip release for remote tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0JA0","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/3VA1150-4EF32-0JA0 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}}