{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-3EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-3EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-3EF32-0KC0, 3-pole molded case circuit breaker, 50 A at 40 °C, 75.6 kA at 240 V, line protection design with shunt trip and 2 auxiliary switches.","salesMarkdown":"The Siemens SENTRON 3VA1150-3EF32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 50 A continuously at 40 °C ambient and delivering a 75.6 kA interrupting capacity at 240 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. This is a current-production part in the SENTRON family, built for panel builders who need a compact, high-interrupt MCCB with integrated auxiliary switching and shunt trip capability. The interrupting ratings are voltage-sensitive: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V. At 690 V the 11.9 kA rating still covers most industrial motor branch circuits; if your available fault current at that voltage exceeds 11.9 kA, you need a current-limiting upstream device or a higher-rated frame. The breaker holds 50 A from 40 °C through 50 °C ambient, then derates smoothly: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, down to 45 A at 70 °C. Maximum power dissipation is 14.6 W, which is modest for a 50 A MCCB; adjacent devices in a crowded enclosure won't see significant additional heat load. ## Auxiliary switching and shunt trip — what's inside That means you get remote status indication (open/closed/tripped) on two independent contacts, plus a remote trip coil that can be triggered by a safety relay, PLC output, or emergency-stop button. No undervoltage release is fitted, and there is no ground-fault monitoring module — if you need UVR or GF protection, you add them as external accessories or pick a different suffix. The auxiliary release is wired separately from the main load circuit; the shunt trip coil voltage must match your control voltage — verify polarity and coil rating before commissioning.","metaTitle":"Siemens SENTRON 3VA1150-3EF32-0KC0 MCCB, 50 A, 75.6 kA at 24","metaDescription":"Siemens SENTRON 3VA1150-3EF32-0KC0 molded case circuit breaker, 3-pole, 50 A rated at 40 °C, 75.6 kA breaking capacity at 240 V. Line protection design with shunt trip and 2 auxili","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":"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":"3VA11503EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","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":"3VA9688-0BL33","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=94841&mlfb=3VA1150-3EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-3EF32-0KC0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ with your target quantity and delivery window; availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1150-3EF32-0KC0's listed depth?","answer":"The depth is 70 mm (2.76 inches)."},{"question":"What is 3VA1150-3EF32-0KC0's listed width?","answer":"The width is 76.2 mm (3 inches)."},{"question":"What compliance documentation does this breaker come with?","answer":"Siemens provides the standard declaration pack for current-production SENTRON MCCBs, including CE, UKCA, RoHS, and REACH documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0KC0","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/3VA1150-3EF32-0KC0 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}}