Combined lightning and overvoltage protection for LV consumer terminals and electronics
The PU I+II COMBI combined overvoltage protection set includes Class 1 PU I TSG triggered dischargers, Class II PU C varistor charge eliminator, and cross-connection bridges.
This form of overvoltage protection is used when space is tight. Low-voltage consumer terminals and electronic appliances are protected from overvoltage which can occur during atmospheric discharges (lightning) or switching operations (transients).