The DPA53CM48 is a 3-phase Monitoring Relay with PA66 or NORYL 17.5mm DIN-rail housing, SPDT contact, mini DIN-rail mount and screw terminals. This DPA53-series monitor relay for detection of incorrect phase sequence and phase loss. Knob-adjustable undervoltage detection. Using the front knob it can be decided the undervoltage set point of the unit. LED indication for relay and power supply ON. Green LED power supply ON and yellow LED relay ON indication <100ms ON delay and <300ms OFF delay alarm reaction time IP20 Protection rating -20 to 60°C Operating temperature range Applications Industrial