MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker is an outdoor high-voltage distribution device with three-phase AC 50Hz, rated current 630A~1250A, and short-circuit current 16kA~20kA. Mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. Suitable for protection and control in power distribution systems of industrial and mining enterprises, and more suitable for rural power grids and places with frequent operations. This product retains all reasonable parts and excellent performance of the original ZW32 structure, and also increases the overall mechanical life of the product, including the arc extinguishing chamber, by several times compared to the original model, with a lifespan of up to 60000 times and 30000 times without maintenance during the service life.

Structural characteristics of MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker:
1. Surrounding air temperature: -40 ℃~+55 ℃, daily temperature difference: daily variation of 25 ℃;
2. Altitude: not exceeding 2000 meters;
3. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 35m/s);
4. No frequent severe vibrations, earthquake intensity not exceeding 8 degrees;
5. Places without strong corrosive gases or media (such as various acids, alkalis, thick smoke, etc.);
6. Anti pollution ability level IV.

MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker model meaning



Main technical parameters of MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker

Appearance and installation dimensions

MZZ11-12/T630-20 outdoor pole mounted high-voltage vacuum circuit breaker