{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1050-4ED32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1050-4ED32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA1050-4ED32-0BH0, 3-pole, 50 A rated at 40 °C, 121 kA breaking capacity at 240 VAC, line protection design with undervoltage release.","salesMarkdown":"## Siemens SENTRON 3VA1050-4ED32-0BH0 — 50 A MCCB, 3-Pole, High Interrupting Capacity Its interrupting capacity hits 121 kA at 240 VAC, dropping to 75.6 kA at 415 VAC and 52.5 kA at 440 VAC — numbers that tell you this breaker is built for high-fault panels where upstream coordination demands a stiff SCCR. At 690 VAC it still clears 11.9 kA, so it handles 480Y/277 V systems with headroom. ## Built-in Undervoltage Release and Auxiliary Switching It also carries 2 auxiliary switches plus a separate trip alarm switch (HQ), giving you status feedback for PLC or SCADA without adding external relays. The 70 mm depth and 76.2 mm width fit the standard SENTRON 3VA mounting footprint — same panel cutout as the 3VA1 frame. No communication module on this unit; it's a standalone thermal-magnetic breaker with a mechanical trip indicator for local fault indication. ## Environmental and Compliance Range Rated insulation voltage is 800 V, with an operating temperature span of -25 °C to 70 °C and storage from -40 °C to 80 °C.","metaTitle":"Siemens 3VA1050-4ED32-0BH0 SENTRON MCCB, 50A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA1050-4ED32-0BH0 molded case circuit breaker, 50A rated, 3-pole, 121 kA breaking capacity at 240 VAC. Active production. Quoted to order against RFQ.","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":"Yes","Number Of Poles":"3","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":"3VA10504ED320AA0","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"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=404919&mlfb=3VA1050-4ED32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1050-4ED32-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1050-4ED32-0BH0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1050-4ED32-0BH0 at different voltages?","answer":"The breaker clears 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and 11.9 kA at both 500 VAC and 690 VAC."},{"question":"Does 3VA1050-4ED32-0BH0 include an undervoltage release?","answer":"Yes, this variant includes a factory-installed undervoltage release (UVR) plus 2 auxiliary switches and a trip alarm switch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1050-4ED32-0BH0","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/3VA1050-4ED32-0BH0 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}}