The three-phase overvoltage protection device is utilized to protect
three-phase circuits against abrupt surges in input voltage and
voltage spikes.
This device is positioned between the primary three-phase input
and the circuits that require protection. If the input voltage exceeds
the user-set protection voltage level on the device, the onboard
thermistor will be activated. This results in the disconnection of the
three-phase input main circuit to prevent damage caused by high
voltage.
