{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED42-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED42-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED42-0HH0, molded case circuit breaker, 4-pole, 50 A at 40 °C, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1050-4ED42-0HH0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying 50 A continuous at 40 °C with no derating needed up to 50 °C — at 55 °C it still holds 49 A, and at 70 °C it's still good for 45 A. That thermal curve means you can run it near its nameplate in a warm panel without dropping frame size. Breaking capacity is the headline: 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and still 11.9 kA at 690 VAC. That's a high-interrupting rating for a 50 A frame — it clears serious fault current without cascading upstream, which matters when you're coordinating downstream feeders in a distribution panel. Dimensions are 101.6 mm wide, 130 mm high, 70 mm deep — a standard SENTRON 3VA frame footprint. The 4-pole width is the same as a 3-pole plus one module; check your enclosure fill factor if you're replacing a 3-pole unit. That covers most indoor electrical rooms and mild outdoor enclosures. The -25 °C minimum means it's fine for unheated shelters in temperate climates.","metaTitle":"3VA1050-4ED42-0HH0 SENTRON MCCB, 4-pole, 50 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1050-4ED42-0HH0 molded case circuit breaker, 4-pole, 50 A rated at 40 °C, 121 kA breaking capacity at 240 VAC. Available to order — request quote for pricing and","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 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":"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":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA10504ED420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL30","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":"S","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=34207&mlfb=3VA1050-4ED42-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED42-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1050-4ED42-0HH0 and what is the lead time?","answer":"This part is sourced to order through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key ratings for 3VA1050-4ED42-0HH0?","answer":"It's a 4-pole MCCB rated 50 A at 40 °C with breaking capacities of 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. Rated insulation voltage is 800 V."},{"question":"What is the physical size of 3VA1050-4ED42-0HH0?","answer":"Width is 101.6 mm, height is 130 mm, depth is 70 mm — standard SENTRON 3VA frame dimensions for a 4-pole MCCB."},{"question":"Does 3VA1050-4ED42-0HH0 include auxiliary contacts or a shunt trip?","answer":"Yes, it comes with 2 auxiliary switches plus a trip alarm switch (HQ) and a shunt trip release (STL) for remote tripping. No undervoltage release is included."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED42-0HH0","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/3VA1050-4ED42-0HH0 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}}