{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-4EF36-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-4EF36-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-4EF36-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF36-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-4EF36-0KH0, 3-pole molded case circuit breaker, 50 A rated, 121 kA interrupting at 240 V, line protection design with shunt trip and auxiliary switches.","salesMarkdown":"Its interrupting capacity hits 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and holds 11.9 kA all the way up to 690 V — so it handles high-fault scenarios across common industrial voltage levels without needing an upstream current-limiting fuse. That SCCR headroom means you can coordinate downstream branch breakers with confidence, especially on 480 V or 400 V distribution where fault currents can exceed 50 kA. Thermal derating is mild: the breaker holds full 50 A up to 50 °C, then drops to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. ## Auxiliary switches and shunt trip — what's inside No undervoltage release is fitted, so if you need UVR for machine-restart prevention, this isn't the variant. The base switch is order code 3VA11504EF360AA0 — that's the core mechanism this assembly builds on. Communication function is absent; this is a standalone breaker, not a 3VA2 with PROFIBUS or Modbus. Footprint is 76.2 mm wide (3 in), 130 mm tall (5.12 in), and 70 mm deep (2.76 in). The 70 mm depth leaves clearance for wiring gutters and busbar connections; no need to oversize the enclosure just for this breaker.","metaTitle":"Siemens 3VA1150-4EF36-0KH0 SENTRON MCCB, 50 A, 3-Pole, 121 k","metaDescription":"Siemens 3VA1150-4EF36-0KH0 SENTRON molded case circuit breaker, 50 A rated, 3-pole, 121 kA interrupting at 240 V. Line protection with shunt trip and auxiliary switches. Sourced to","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":"Yes","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":"3VA11504EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"S","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=103902&mlfb=3VA1150-4EF36-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF36-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1150-4EF36-0KH0 at 480 V?","answer":"At 440 V it's rated 52.5 kA, and at 500 V it's 11.9 kA. For 480 V (between those two test voltages), expect the lower 11.9 kA figure to apply — the breaker's arc chamber is designed to extinguish at the 500 V level."},{"question":"Where can I buy 3VA1150-4EF36-0KH0 and how is it quoted for volume purchases?","answer":"We source this part to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time. Submit an RFQ for volume pricing and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-4EF36-0KH0","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/3VA1150-4EF36-0KH0 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}}