Star Delta Starter Semi & Fully Automatic (PMU-2)

Star Delta Starter Semi & Fully Automatic (PMU-2) is a device or group of devices that serves to govern in some predetermined manner the performance of an electric motor.[1] A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and faults.

Description	Technical
Type	FASD/SASD
Phase	Three Phase
Protection	Overload Relay
Color	Smoke Grey
Shape	Rectangle
Contactor	PLT
Surface Treatment	Powder Coating
Voltage	360/440 V

PMU-2 AC Contactor:

Air break contactor with different capacity is usually used to supply the electric current to the motor through it to prevent high power load to the motor.

Overload Relay:

Consists of a small heater element wired in series with the motor and a bimetal strip that can be used as a trip lever. The bimetal strip is made of two dissimilar metals bonded together. If the cause of the overload still exists, the relay will trip again and reset at given intervals.