The LW30A-800 high-voltage AC SF₆ tank circuit breaker is a new product independently developed by our company to meet the power system's requirements for high parameters, high reliability, compactness, and convenient operation and maintenance of ultra-high voltage transmission and transformation equipment. This circuit breaker features a rational structure, reliable electrical and mechanical performance, and parameters that surpass those of similar domestic products, making it the preferred equipment for 750kV power systems.