{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED42-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED42-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Molded case circuit breaker, 3VA1050-4ED42-0CC0, 4-pole, 50 A, TM210 release, 121 kA at 240 V, undervoltage release, IP40 front.","salesMarkdown":"## 4-pole MCCB with UVR for line protection The Siemens SENTRON 3VA1050-4ED42-0CC0 is a 4-pole molded case circuit breaker rated for a continuous current of 50 A at 40 °C, with a TM210 thermal-magnetic overcurrent release and a factory-fitted undervoltage release (UVR). It's set up for line protection duty — no ground-fault monitoring, no N-conductor protection, no comms module. The 121 kA interrupting rating at 240 V means it can handle high-fault utility feeds without cascading upstream; at 415 V it still breaks 75.6 kA, and at 690 V it's 11.9 kA. That's a lot of headroom for a 50 A frame, which is exactly what you want when the available fault current on site is unknown or high. The 50 A rating holds flat from 40 °C to 50 °C, then steps down to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep, which is the standard 4-pole SENTRON 3VA footprint. ## Auxiliary contacts and release configuration No voltage trip, no phase-failure detection, no communication function. The TM210 release is a thermal-magnetic fixed-trip design, so you're not adjusting the magnetic pickup in the field.","metaTitle":"Siemens 3VA1050-4ED42-0CC0 SENTRON MCCB, 50 A, 4-Pole, 121 k","metaDescription":"Siemens 3VA1050-4ED42-0CC0 SENTRON molded case circuit breaker, 50 A rated continuous current, 4-pole, line protection, TM210 release, UVR included. 121 kA at 240 V. Current lifecy","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":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches 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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB24","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=398985&mlfb=3VA1050-4ED42-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0CC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1050-4ED42-0CC0?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through our sourcing channels."},{"question":"What are the key interrupting ratings for this MCCB?","answer":"At 240 V it breaks 121 kA, at 415 V it's 75.6 kA, at 440 V it's 52.5 kA, and at 690 V it's 11.9 kA."},{"question":"Does this MCCB include an undervoltage release?","answer":"Yes, it ships with a factory-fitted undervoltage release (UVR), order code 3VA9608-0BB24."},{"question":"What is the thermal derating above 50 °C?","answer":"The 50 A rating holds 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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0CC0","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/3VA1050-4ED42-0CC0 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}}