Control Measurement Relay, Voltage Sensing, Contact Form DPDT, 12 Pins, Base Type DIN Mount, Number of Contacts 2, Contact Amp Rating (Resistive) 1A @ 24 VDC, 3A @ 250 VAC, 5 A @ 24 VAC, Input Voltage 220 to 480 VAC, 3 Phase, Power Rating (VA) 1250, Trip Delay (Sec.) 0.1 to 10.0 (0 + 10 Percent), Pick Up Range 194 to 528 Vac, Drop-Out Range 2 to 20 Percent, Voltage Unbalance (Percent) 2 3-Phase Line Monitors/Phase Failure RelaysUnits protect against phase loss, phase unbalance (except 5WMJ4, 5WMJ5, and 5WMJ6), phase reversal, and undervoltage. Adjustable undervoltage setting. UL Recognized. SSAC items are CSA Certified. 5JJ49, 5WMJ3, and 12N828 also detect overvoltage.Automatic reset LED indicator signals normal operation (except 12N826 to 12N828) Wye or delta 3-wire hookup