Overview

The FN7-12DR series indoor high-voltage load disconnectors and fuses are a new type of indoor high-voltage load disconnectors designed for AC 50Hz, 12kV rated voltage three-phase AC power systems, used for opening load currents and closing short-circuit currents.

Application Environment

◆Ambient air temperature: Upper limit: +40°C; Lower limit: -10°C in general areas, -25°C in cold regions

◆Altitude: Altitude of 1000m or below.

Relative humidity, not exceeding 95% on a daily average and 90% on a monthly average.

The surrounding air should not be visibly polluted by corrosive or flammable gases, and steam, etc.

No frequent violent vibrations.