Phase Monitor Relay Base Shape Octal Contact Form SPDT Contact Rating (AC) 10 A @ 277V Contact Rating (DC) 7 A @ 30V Current Rating 10 A Input Voltage 190 to 500V AC Monitored Parameters Overvoltage Phase Loss Phase Reversal Phase Unbalance Undervoltage Number of Pins 8 Restart Auto Manual Restart Time Delay 2 sec Mounting Style Plug-In Body Depth 2.4 in Body Height 2.9 in Body Width 1.7 in Compatible with Grainger Part Number 5X852