SSAC-SYMCOM DLMUBRAAA Voltage Monitoring Relay

Littelfuse SSAC Voltage Monitoring Relay, 3-Phase Form 3 Isolated Electro Mechanical, Series: DLMU, 200 to 480 VAC, 50/60 Hz Frequency, SPDT/NO Contact Configuration, DIN Rail/Surface Mounting, Screw Terminal, 1 to 30 s Trip Delay, 4.33 in H x 2.95 in W x 1.97 in D Dimensions

Additional Description: LTFS-DLMUBRAAA 3Ph Volt Mon 200-480VAC Restart Delay on Restore

Catalog Description: The DLMU Series is a universal voltage, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points. It separately senses phase reversal and loss; over, under and unbalanced voltages; and over or under frequency. Protection is assured during periods of large average voltage fluctuations or when regenerated voltages are present. The unit trips within 200ms when phase loss is detected. Adjustable time delays are included to prevent nuisance tripping and short cycling of sensitive equipment. The isolated, 10A, SPDT and 2A alarm output relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable frequency range are fixed. Both delta and wye systems can be monitored; no connection to neutral is required. See datasheet for operation details.