The DK-27 Three Phase Auto Switch is a compact and reliable switching controller designed for convenient control of suitable three-phase motor and pump systems. It provides automatic operation along with manual control, making it suitable for applications where dependable motor switching is required. The controller is designed for three-phase connections and provides clearly identified R, Y and B terminals for convenient electrical wiring. Its front control section includes status indicators and a manual/auto selection switch, allowing users to monitor the operating condition and select the required control mode. The DK-27 comes in a compact protective enclosure with an integrated wiring arrangement. Its straightforward design makes installation and maintenance convenient for suitable motor-control applications. The unit is suitable for agricultural, irrigation, water-pumping and other compatible three-phase motor applications where automatic switching and manual control are required.