Overview

FN3-12 / 400A indoor load switch, suitable for AC 50HZ, 6KV or 12KV network, as the breaking and closing load and overload current purposes, can also be used as breaking and closed no-load long-term. No-load transformer and capacitor switch. With RN3-type fuse-type load switch can be cut off short circuit, for the protection switch.

Structure

Load switch from the chassis, transmission, pillar insulators, knife and arc extinguishing device with a part of the resistance. The base frame is welded by steel plate and is equipped with transmission mechanism. The knife is fixed by the pillar insulator on the base frame, the knife contact point riveting limited contact, the end is equipped with the arc contact. Arc extinguishing device and device and nozzle. At the end there is also equipped with jumping, cam and fast closing spring, can be fast closing action.

Use environmental conditions

1, the ambient air temperature limit: +40 degrees, the lower limit: -25 degrees;

2, the altitude of not more than 1000m;

3, the relative humidity daily average of not more than 95%, the monthly average of not more than 90%.

4, earthquake intensity does not exceed 8 degrees;

5, no fire, explosion hazard, chemical corrosion and severe vibration of the place;

6, pollution level: Ⅱ level;

7, the surrounding air should not be corrosive or flammable gas and water vapor and other obvious pollution.

The main technical parameters

The fuse type and parameters of the load switch

Shape and installation dimensions