ZW7B-40.5 series outdoor high-voltage vacuum circuit breakerDetailed product description：

I. Overview
The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the "circuit breaker") is used in three-phase power systems with AC 50Hz and 40.5kV for the purpose of opening and closing load currents, overload currents, and short-circuit currents.

The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker meets the requirements of the national standard GBl984.2003 "AC High Voltage Circuit Breaker" and the International Electrotechnical Commission standard IEC56 "High Voltage AC Circuit Breaker".
The ZW7B-40.5 series outdoor high-voltage vacuum circuit breaker should meet the following environmental conditions when used:

Surrounding air temperature: upper limit+40 degrees, lower limit -40 degrees;
b. Altitude: ≤ 1000m (when exceeding 1000m, adjust electrical parameters according to the corresponding altitude coefficient;
c. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
d. Seismic intensity: not exceeding 8 degrees;
e. Pollution level: Level III (anti pollution type up to Level IV).