MRD-40.5GD wind and photovoltaic dedicated vacuum circuit breaker is a 40.5kV high-voltage switchgear designed specifically for new energy scenarios. It integrates vacuum arc extinguishing technology and high reliability operating mechanism, and is suitable for protecting the collection lines and boosting stations of wind farms and photovoltaic power plants. Capable of breaking 40kA short-circuit current, with a mechanical lifespan of over 20000 operations, withstanding extreme environments (-40 ° C to+70 ° C, humidity 95%), and complying with IEC 62271-100 and GB/T 1984-2014 standards. Resolve core pain points such as frequent switching and high salt spray corrosion in new energy stations.