LYDF series single-phase & three-phase lightning-proof box is used on over-voltage protection of B, C, D grade, which is usually installed in household low-voltage distribution box. As long as the power supply circuit undergoes over-voltage or lightning,  the lightning-proof box will transmit it in nano-second and restrain the over-voltage in safe range, synchronouly discharge the surge into earth.

Features::

1. use high-quality voltage dependent resistor.

2. the plug-plucked style module can be replaced when it is operating.

3. with over-current, thermostat fuse function.

4. common mode, different mode, full protection mode.

5. low residual voltage, fast response, large withstanding surge current.

6. power supply module open circuit, acoustic & optical alarm, be provided with remote switch signal.

7. counter is optional according to customer with the function of counting lightning shock and over-voltage.

8. the panel shows the state of protection (normal, aging, invalid).

Single-phase & Three-phase Lightning-proof Box