{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-2ED42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-2ED42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-2ED42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-2ED42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-2ED42-0CH0, molded case circuit breaker, 4-pole, 50 A rated current, 52.5 kA breaking capacity at 240 V AC, line protection design.","salesMarkdown":"It carries a 50 A rated current at 40 °C and delivers a 52.5 kA breaking capacity at 240 V AC — the figure that governs its fault-interruption capability at common low-voltage supply points. The interrupting rating drops as system voltage rises: 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V (–). The 52.5 kA at 240 V covers high-fault scenarios on split-phase or 240 V line-to-line feeds. Rated current holds at 50 A from 40 °C through 50 °C, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C (–). Maximum power loss is 17.1 W — negligible for most panels but worth checking if multiple breakers sit in a sealed, uncooled compartment. The UVR drops the breaker on loss of control voltage — standard for safety circuits where a downstream contactor or safety relay must not re-energize until voltage is restored. The trip alarm switch signals the breaker's thermal-magnetic trip separately from manual open, useful for remote fault annunciation. ## Physical Fit and Environmental Range The 101.6 mm width is a standard 4-inch footprint for a 4-pole MCCB — it occupies one full modular position in a SENTRON distribution panel or any DIN-rail adapter. The operating range covers most indoor industrial enclosures; the storage range accommodates unheated warehouses.","metaTitle":"Siemens 3VA1050-2ED42-0CH0 SENTRON MCCB, 50A, 52.5kA at 240V","metaDescription":"Siemens SENTRON 3VA1050-2ED42-0CH0 molded case circuit breaker, 4-pole, 50A rated, 52.5kA breaking capacity at 240V AC. Active production. Quoted on request.","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","Maximum":"0 A","Minimum":"0 A","at 240 V":"52.5 kA","at 415 V":"32 kA","at 440 V":"13.6 kA","at 500 V":"7.5 kA","at 690 V":"7.5 kA","at 40 °C":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"49 A","at 60 °C":"48 A","at 65 °C":"46 A","at 70 °C":"45 A","Depth [In]":"2.76 in","Width [In]":"4 in","Height [In]":"5.12 in","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"17.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA10502ED420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB24","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"B","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=357137&mlfb=3VA1050-2ED42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-2ED42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1050-2ED42-0CH0 at 240 V?","answer":"The breaking capacity is 52.5 kA at 240 V AC. At higher voltages it drops to 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 500 V and 690 V."},{"question":"Does 3VA1050-2ED42-0CH0 include an undervoltage release?","answer":"Yes, this variant is equipped with an undervoltage release (UVR) plus 2 auxiliary switches and 1 trip alarm switch (HQ)."},{"question":"Where can I buy 3VA1050-2ED42-0CH0 and how is it quoted?","answer":"This part is sourced through independent distribution channels. Submit an RFQ for a volume-based quote; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-2ED42-0CH0","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/3VA1050-2ED42-0CH0 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}}