{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED42-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED42-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED42-0KA0, molded case circuit breaker, 4-pole, 50 A rated continuous current, 121 kA at 240 V, 75.6 kA at 415 V, IP40 front.","salesMarkdown":"## MCCB with high interrupting capacity for line protection It is configured for line protection — no undervoltage release, no ground fault monitoring, no auxiliary contacts, and no communication module. The interrupting ratings are 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. At 55 °C it drops to 48 A, at 60 °C to 47 A, at 65 °C to 46 A, and at 70 °C to 45 A. Front protection is IP40 — sealed against tools and small wires, not washdown. No auxiliary contact version is fitted, and there is no N-conductor protection. For DC network applications, the 3VA molded case circuit breaker device manual covers the specifics.","metaTitle":"Siemens 3VA1050-4ED42-0KA0 SENTRON MCCB, 50 A, 4-pole, 121 k","metaDescription":"Siemens 3VA1050-4ED42-0KA0 SENTRON molded case circuit breaker, 50 A, 4-pole, 121 kA at 240 V. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 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":"No","Number of poles":"4","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":"Without","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","Design of the N-conductor protection":"Without","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":"600 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":"0","Protective function of the overcurrent release":"LI","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=148666&mlfb=3VA1050-4ED42-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0KA0/alternatives.json"},"ai":{"faq":[{"question":"Is 3VA1050-4ED42-0KA0 available via RFQ confirmation and what is the lead time?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source for 3VA1050-4ED42-0KA0?","answer":"The closest functional peer is 3VA1110-5EE32-0JA0, a higher-current variant. The 3VA1050-4ED42-0KA0 has a 50 A rating and a TM210 release; the 3VA1110-5EE32-0JA0 carries a higher current rating and a different release type. They share the same SENTRON platform and 4-pole form factor, but the interrupting ratings and release curves differ — verify the BOM specs before swapping."},{"question":"What is 3VA1050-4ED42-0KA0's listed depth?","answer":"The depth is 70 mm."},{"question":"What is 3VA1050-4ED42-0KA0's listed width?","answer":"The width is 101.6 mm."},{"question":"Will 3VA1050-4ED42-0KA0 drop into a panel specified around 3VA1110-5EE32-0JA0 without rewiring?","answer":"The 3VA1050-4ED42-0KA0 shares the same SENTRON platform and 4-pole form factor as 3VA1110-5EE32-0JA0, so the mounting footprint and busbar pitch are identical — no rewiring for the physical fit. However, the interrupting ratings and release curves differ, so the protection coordination must be rechecked against the BOM specs."},{"question":"What compliance documentation does Siemens provide for 3VA1050-4ED42-0KA0?","answer":"As a SENTRON molded case circuit breaker, the 3VA1050-4ED42-0KA0 is designed to meet applicable IEC and UL standards. Specific compliance documentation (RoHS, REACH, UL, IEC) is available from Siemens upon request or through the product support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0KA0","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/3VA1050-4ED42-0KA0 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}}