Hoffman Controls 706-4S Fan Motor Speed Controllers

Product Description

Hoffman Controls - 706-4S The 706-123S Series multiple voltage Electronic Fan Motor Speed Controller is designed to provide manually adjustable, proportional speed control for single phase shaded pole or permanent split capacitor (open frame) motors. The 706-123S Series may be used for any nominal voltage between 120 and 277 volts. The 706-4S may be used for nominal voltages of 460 through 480 volts. Variable Speed Controllers are applicable for speed adjustment of motor RPM. The 706-123S Series electronic controller assembly and heat sink is available in three models for three current ratings in multiple voltage applications. The 706-4S Series Controller is available in one model for 460 to 480 voltage applications. Typical performance will provide speed adjustment approaching stall with a separate minimum speed limit. The minimum speed limit sets minimum RPM preventing motor stall. Minimum speed varies with motor loading.