{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED32-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED32-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1050-4ED32-0HC0, molded case circuit breaker, 3-pole, 50 A rated, 121 kA at 240 V, line protection design, with shunt trip release.","salesMarkdown":"The Siemens SENTRON 3VA1050-4ED32-0HC0 is a 3-pole molded case circuit breaker rated for 50 A continuous at 40 °C, with a breaking capacity that starts at 121 kA at 240 VAC and drops to 11.9 kA at 690 VAC — a curve that tells you this breaker is sized for high-fault industrial distribution, not residential service. It's a line-protection design (not motor-protection), so the thermal-magnetic trip curve is set for cable and busbar protection in a main or subfeed panel. The 70 mm depth and 76.2 mm width mean it fits the standard SENTRON 3VA mounting footprint — same slot as other 3VA frame sizes, so a panel laid out for a 3VA1110 will accept this physically without re-drilling the backplate. ## Breaking capacity — what the voltage steps mean for selectivity At 240 V the 121 kA rating gives you headroom for a transformer-fed service with a high fault-current contribution. At 415 V it's still 75.6 kA, and at 440 V it drops to 52.5 kA — still enough for most European industrial networks. The 11.9 kA at 690 V is the limit; if your upstream transformer can push more than that at 690 V, this breaker needs a current-limiting upstream device or a larger-frame 3VA. ## Current derating — the real ampacity in a warm panel At 55 °C it derates to 49 A, at 60 °C to 48 A, at 65 °C to 46 A, and at 70 °C to 45 A. ## Built-in auxiliary release and switch configuration ## Sourcing and lifecycle — current production, quoted to order","metaTitle":"Siemens 3VA1050-4ED32-0HC0 SENTRON MCCB, 50 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1050-4ED32-0HC0 molded case circuit breaker, 3-pole, 50 A rated, 121 kA breaking capacity at 240 VAC. 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":"76.2 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]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","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":"3VA10504ED320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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","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":"500 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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=185210&mlfb=3VA1050-4ED32-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0HC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1050-4ED32-0HC0?","answer":"Submit an RFQ through this listing; the part is sourced and quoted to order through independent distribution, with availability and current pricing confirmed at quote time."},{"question":"What is 3VA1050-4ED32-0HC0's listed depth and width?","answer":"Depth is 70 mm, width is 76.2 mm — standard 3VA frame footprint that fits existing SENTRON panel layouts."},{"question":"Will 3VA1050-4ED32-0HC0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"Physically yes — same 70 mm depth and 76.2 mm width, same mounting footprint. The difference is rating: this is 50 A with a shunt trip, while the 3VA1110 is a higher-current variant. Check the load current and release type before swapping."},{"question":"What compliance documentation does this breaker carry?","answer":"As a Siemens SENTRON MCCB it is designed to meet IEC 60947-2 and UL 489 standards. Specific RoHS, REACH, and UL documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0HC0","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/3VA1050-4ED32-0HC0 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}}