The Edco SHP Series hybrid design exhibits performance levels unattainable with simple “shunt type” protectors. The two active clamp stages, large inductor and shunt capacitance effectively halt high rate-of-rise surge waveforms, thus preventing initial voltage overshoot.
Flexibility of installation is another design feature of the Edco SHP Series. The protector first and second stages are electrically separate (line side) for use in jurisdictions that require a line filter between stages.
In addition, the first stage provides protection from MAIN NEUTRAL to GND as well as MAIN LINE to GND. This is an often overlooked feature which becomes significant in locales where NEUTRAL must be kept separate from earth ground inside the cabinet.