Wye Delta Open Transition

Main Lug Only

Wye-Delta Starter is a traditional electro-mechanical method of reducing the voltage applied to the motor during starting. This type of starter is used for large air compressors and pumps. Main Breaker High Interrupt will have a rating of 65kAIC at 480 Volts.

Standard Interrupt Main Breaker

Wye-Delta Starter is a traditional electro-mechanical method of reducing the voltage applied to the motor during starting. This type of starter is used for large air compressors and pumps. Standard Interrupt Main Breakerwill have a rating of 35 to 50kAIC at 480 Volts.

For 400HP and up please refer to “High Interrupt Main Breaker”

High Interrupt Main Breaker

Wye-Delta Starter is a traditional electro-mechanical method of reducing the voltage applied to the motor during starting. This type of starter is used for large air compressors and pumps. Main Breaker High Interrupt will have a rating of 65kAIC at 480 Volts.

PSI offers Main Lug Only, Standard Interrupt Main Breaker, and High Interrupt Main Breaker Wye-Delta Open Transition Motor Starters.
Amp Range 269-1124
Horsepower 150, 250, 300, 350, 400, 450, 500, 600, 700, 800