{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED36-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED36-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED36-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED36-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED36-0KH0, molded case circuit breaker, 3-pole, 50 A rated continuous current Iu, 121 kA breaking capacity at 240 V AC, line protection version with TM210 thermal-magnetic release and shunt trip.","salesMarkdown":"The 121 kA breaking capacity at 240 V AC is the headline number for fault clearing; at 415 V it still holds 75.6 kA, and at 690 V it drops to 11.9 kA — the voltage-dependent SCCR matters for the point of common coupling in your system. ## Current derating and thermal reality At 55 °C it carries 48 A, at 60 °C it's 47 A, at 65 °C it's 46 A, and at 70 °C it's 45 A. If your panel internal ambient runs hot (enclosed, sun-loaded, next to drives), size the load side for the derated figure, not the nameplate 50 A. ## Integrated auxiliary and shunt trip The shunt trip is the integrated auxiliary release design; its order code is 3VA9688-0BL33. If you need remote undervoltage protection or Modbus communication, this is not the variant — look at the 3VA1 family with electronic releases. Front IP40 protection class — suitable for enclosure mounting behind a door or cover, not for washdown. Dimensions: 130 mm height, 76.2 mm width (3-pole standard), 70 mm depth. Latching endurance is 15,000 operations — not a high-cycle switching device, but fine for infrequent disconnect duty.","metaTitle":"Siemens 3VA1050-4ED36-0KH0 SENTRON MCCB, 50 A, 121 kA at 240","metaDescription":"Siemens 3VA1050-4ED36-0KH0 SENTRON molded case circuit breaker, 50 A rated, 121 kA breaking at 240 V. Active lifecycle. 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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"48 A","at 60 °C":"47 A","at 65 °C":"46 A","at 70 °C":"45 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"50 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","Design of the overcurrent release":"TM210","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"50 A","Adjustable response value current / li max.":"500 A","Adjustable response value current / li min.":"500 A","Adjustable response value current / lr min.":"50 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"100 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=283029&mlfb=3VA1050-4ED36-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED36-0KH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1050-4ED36-0KH0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional alternative to 3VA1050-4ED36-0KH0?","answer":"The 3VA1110-5EE32-0JA0 is a higher-current sibling with an electronic release and communication capability, but it shares the same SENTRON platform and 3-pole form factor. It will not drop into a panel wired for the 50 A TM210 without checking the load-side cable sizing and trip coordination."},{"question":"What is the depth of 3VA1050-4ED36-0KH0?","answer":"70 mm depth, 76.2 mm width, 130 mm height."},{"question":"Will 3VA1050-4ED36-0KH0 drop into a panel specified around 3VA1110-5EE32-0JA0?","answer":"The 3VA1050-4ED36-0KH0 shares the same 3-pole SENTRON footprint (76.2 mm wide per pole), so it will physically mount on the same DIN rail or screw-mount pattern. However, the 3VA1110-5EE32-0JA0 is a higher-rated device with an electronic release — verify the load-side cable ampacity and coordination study before swapping down in rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED36-0KH0","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/3VA1050-4ED36-0KH0 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}}