The LW30-72.5 outdoor high voltage self-energy SF₆ ceramic pole circuit breaker is a three-phase AC 50Hz outdoor high-voltage switching device, specifically designed for switching capacitor banks in 72.5kV power transmission and distribution systems. It is suitable for capacitor bank switching in 750kV or 550kV substations and can also be used for control, protection, and as a tie circuit breaker. This circuit breaker is capable of withstanding harsh conditions such as high transient recovery voltages generated during capacitor bank switching, overvoltages from remote substations or transformers, and high-frequency transient processes. It complies with GB1984-2003 "AC High Voltage Circuit Breakers" and meets the requirements of the International Electrotechnical Commission standard IEC62271-100:2001 "High-voltage switchgear and controlgear - Part 100: High-voltage alternating-current circuit breakers".