D3PK09-M-SJS-K is part of Encitech's 3-phase power line monitor series. The part is an integrated current monitoring and power line protection device. It is designed to monitor voltage, current, frequency, power, and energy in 3-phase power systems. It can be configured with overvoltage, undervoltage, current limit, overcurrent, and overvoltage/undervoltage protection for multiple load control and line protection applications. The connected power line monitoring measurement range is TN-C-S 0A-50A.