The Littelfuse POWR-GARD PGR-6100 Ground-Fault & Insulation Relay is designed to provide basic protection for a motor, including ground fault protection and insulation monitoring. The fact that the PGR-6100 insulation monitoring relay has predictive as well as protective capabilities makes it unique. The ground-fault current and insulation resistance can be monitored using two separate meters. Two separate alarm contacts are also provided.