DPB01/PPB01 Multifunction Monitoring Relay Carlo Gavazzi DPB01 and PPB01 series three-phase, or three-phase + neutral, line voltage monitoring relay for phase sequence, phase loss, over and under voltage with built-in time delay function. The DPB and PPB relays have a wide supply voltage range from 208 to 480 V ac covered by two multi-voltage relays. TRMS 3-phase over and under voltage, phase sequence and phase loss monitoring relays
Detect when all 3 phases are present and have the correct phase sequence
Detect if all the 3-phase-phase or phase-neutral voltages are within the set limits
Upper and lower limits separately adjustable
Measure their own power supply
Adjustable voltage on relative scale
Adjustable delay function (0.1 to 30 s)
DIN-rail mounting or plug in
LED indication for relay, alarm and power supply