LW-40.5 series outdoor sf6 circuit breaker is 40.5KV rated voltage, three phase AC 50/60HZ switch, mainly applied to break and make load current, overload current and short circuit current. 
It is equipped with puffer type arc extinguishing chamber and has good breaking performance long electrical life, high mechanical reliability and can be frequently operated. It can break 40KA short circuit current 21 times continuously under rated voltage without maintenance, without sf6 gas replacement. Each breaker can be equipped with 12 CTs.
This type of circuit breaker is three phase, AC 50/60Hz outdoor high voltage equipment, suitable for 40.5KV power transmission and distribution control and protection, also for communication between circuit breaker and open-closing capacitor bank. Its operating mechanism is CT14 spring type. 
The circuit breaker meets national standard GB1984-1989 "AC high voltage circuit breaker" and IEC 56, IEC 62271-100 "high voltage AC circuit breaker".

We can supply whole solutions for outdoor sf6 circuit breaker up to 126KV. 
For more details pls contact our engineer. Our email is info@e-tenlee.com