{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED32-0KH0, molded case circuit breaker, 3-pole, 50 A rated continuous current Iu, 121 kA breaking capacity at 240 V, TM210 thermal-magnetic release, line protection version.","salesMarkdown":"Its 50 A continuous current (Iu) holds flat from 40 °C to 50 °C, then derates to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C — so in a warm panel you lose 5 A by the time ambient hits 70 °C. The breaking capacity is the headline: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 70 mm depth, 76.2 mm width, and 130 mm height fit the standard SENTRON 3VA footprint — drops into a panel that was laid out for a 3VA frame without re-drilling the mounting plate. ## Built-in auxiliaries and release options The shunt trip (STL) is integrated for remote tripping via a control voltage; the integrated auxiliary trip order code is 3VA9688-0BL33 if you need a spare. Latching endurance is rated at 15,000 operations, which is typical for a distribution MCCB not cycled daily like a contactor.","metaTitle":"Siemens 3VA1050-4ED32-0KH0 SENTRON MCCB, 50 A, 121 kA at 240","metaDescription":"Siemens 3VA1050-4ED32-0KH0 SENTRON molded case circuit breaker, 50 A rated, 121 kA breaking at 240 V. 3-pole line protection with TM210 release. Active production, sourced 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":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=234580&mlfb=3VA1050-4ED32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at different voltages?","answer":"121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. The 121 kA at 240 V is the highest rating and suits high-fault service entrances."},{"question":"What is the closest functional second-source for 3VA1050-4ED32-0KH0?","answer":"The 3VA1010-2ED32-0JA0 is a lower-current sibling in the same 3VA frame family. It shares the same footprint and TM210 release design but at a lower amp rating — it will not drop in as a direct replacement for a 50 A circuit without rewiring the load conductors and verifying the trip curve matches the protected circuit."},{"question":"Where can I buy 3VA1050-4ED32-0KH0 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0KH0","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/3VA1050-4ED32-0KH0 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}}