{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED42-0HA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED42-0HA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0HA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0HA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED42-0HA0, molded case circuit breaker, 4-pole, 50 A, line protection, TM210 overcurrent release, 121 kA at 240 V, IP40 front.","salesMarkdown":"## MCCB for main feeder or large branch — 50 A continuous, 4-pole, with shunt trip The Siemens 3VA1050-4ED42-0HA0 is a SENTRON molded case circuit breaker rated for 50 A continuous current at 40 °C, with a 4-pole configuration and a TM210 thermal-magnetic overcurrent release. It carries a 121 kA interrupting rating at 240 V and 75.6 kA at 415 V, making it suitable for high-fault-capacity main feeders or large branch circuits in industrial switchboards and panelboards. The 121 kA interrupting rating at 240 V and 75.6 kA at 415 V give this MCCB headroom for high-fault installations where upstream transformer capacity is large. The TM210 release holds 50 A continuously from 40 °C up to 50 °C; above that it derates to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. For a panel running at 55 °C ambient, the effective continuous rating is 48 A, not the nameplate 50 A. ## Shunt trip included — no auxiliary contacts, no communication It does not include undervoltage release, auxiliary contacts, phase failure detection, ground fault monitoring, or communication functions. The N-conductor protection is also omitted. For applications requiring remote status feedback or ground fault protection, a different 3VA variant or an add-on accessory kit is needed. ## Lifecycle and sourcing — current production, quoted to order No official successor has been announced; the 3VA family remains the active SENTRON platform for molded case breakers.","metaTitle":"Siemens 3VA1050-4ED42-0HA0 SENTRON MCCB, 50 A, 4-Pole, 121 k","metaDescription":"Siemens 3VA1050-4ED42-0HA0 SENTRON molded case circuit breaker, 50 A rated, 4-pole, line protection, TM210 release, 121 kA at 240 V. Current production. 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":"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":"3VA9688-0BL30","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=237143&mlfb=3VA1050-4ED42-0HA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0HA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1050-4ED42-0HA0 and how is it quoted?","answer":"This MCCB is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quotation."},{"question":"What is the interrupting capacity of 3VA1050-4ED42-0HA0 at different voltages?","answer":"The interrupting rating is 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V."},{"question":"What is the rated continuous current and how does it derate with temperature?","answer":"Rated continuous current Iu is 50 A. It holds 50 A 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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0HA0","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/3VA1050-4ED42-0HA0 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}}