Product Overview
ZFN21-12D/T630-20, ZFN21-12DR/T125-31.5 high-pressure vacuum load switch and combined electrical appliances are used in three-phase AC 12KV, 50Hz power distribution system, with compact structure, small size, light weight, long life, strong closing and breaking ability, safe and reliable, etc., and fuse (referred to as combined electrical appliances), can replace the higher cost of circuit breakers, its operation and maintenance is simple and convenient.
Environmental Conditions of Use
◆ The height of the sea dial ≤1000m;
◆ Ambient temperature: -25°C~+40°C;
◆ Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%;
◆ Places free of conductive dust, corrosive gases and water vapor;
◆ No fire and explosion hazard places;
◆ No violent vibration, the inclination is less than 3°.
