ZW20B-12 Outdoor High Voltage Vacuum Circuit Breaker

It is mainly used to break and close the load current, overload current and short-circuit current of the power system. It is suitable for protection and control of substations, industrial and mining enterprises, and urban and rural distribution networks, especially for places with frequent operations and urban automatic distribution networks. This product is matched with the controller, which can meet the requirements of the distribution automation system, and can reliably and effectively complete the traditional recloser function. It adopts a mature box-type sealing structure, and the inside is filled with SF6 gas. It has good sealing performance and prevents it from being affected by the external environment. It is a maintenance-free product. Its spring operating mechanism adopts direct chain main transmission and multi-stage tripping system, which has high operation reliability and is a good product for pole-mounted circuit breakers.

Performance advantages □Model meaning

Ambient air temperature: upper limit +40°C, lower limit -30°C;

The altitude does not exceed 2000m;

Wind pressure does not exceed 700Pa (corresponding to wind speed 34m/S);

The earthquake intensity does not exceed 8 degrees;

Pollution level: Ⅳ level;

Maximum daily temperature difference: no more than 25°C;

Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;

No flammable, explosion hazard, chemical corrosion and severe vibration places.