Star Delta Motor Starter Type LK1

The LK1 Star Delta motor starters are available in 2 identical distinct designs, suitable wired & inter-connected with three solenoid operated air break contactors Type LK1 and one triple pole thermal overload relay Type LK1, fopr overload & under voltage protection
It is available in Semi Automatic & Fully Automatic version in 16A & 25A contactor ratings.
In the Semi-automatic version, the motor starts in STAR on pressing the START button & changes over to DELTA on releasing the start button after the motor has picked up its full speed.
In the Fully-Automatic version, the changeover from STAR to DELTA is controlled by an adjustable electronic timer & the user needs to press the Start button only once, where from the timer take over.