I. Overview
ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor distribution equipment with a rated voltage of 12kV. It is mainly used for breaking and closing load current, overload current, and short-circuit current in three-phase power systems. The product complies with the standard GBl984-2003 "AC High Voltage Circuit Breaker".

2、 ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker model and meaning
1. Surrounding air temperature: upper limit+40 ℃, lower limit -30 degrees (general areas), -40 degrees (high-altitude areas)
2. Altitude: ≤ 1000m (if altitude i is too high, the rated insulation level will be correspondingly increased);
3. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);
4. Earthquake intensity: not exceeding 8 degrees;
5. Pollution level: Level IV;
6. Maximum daily temperature difference: not exceeding 25 degrees.

3、 Functional Features
The ZW51-12/D series outdoor column mounted AC high-voltage vacuum circuit breaker adopts outdoor epoxy casting technology, which integrates the vacuum arc extinguishing chamber and current transformer into an integrated solid insulation maintenance free phase column component, which is oil-free, gas free, and pollution-free.
2. Vertical phase separation layout, easy to install and adjust.
3. All stainless steel shell, no worries of corrosion.
4. Equipped with a permanent magnet actuator to meet the requirements of different occasions.
5. Equipped with an electronic control unit, it becomes an intelligent circuit breaker that can achieve "four remote" monitoring.
6. CT power supply, PT power supply, solar power supply, multiple power supply methods, safe and reliable.

ZW51-12/D series outdoor pole mounted AC high-voltage vacuum circuit breaker