Mikro's RPR415 reverse power relay is a directionally controlled timing relay which serves as a device to monitor system power direction and protect AC generators from motoring. When such a condition occurs and the reverse current exceeds your adjustable preset limit and the current persists for a predetermined delay time, the trip relay operates to disconnect the circuit. • Reverse power monitoring • 3-phase, 3 or 4-wire system • Adjustable reverse power setting • Adjustable tripping time delay • Indicators for auxiliary power, trip delay and trip status • Test button • ANSI Code: 32