Automatic Transfer Switch Controllers

The FT Series Fire Pump Controllers are designed to provide automatic transfer from normal to alternate power when the normal source of power drops below 85%, or is lost in any or all phases of the normal power supply.

FT20 Limited Service

The FT20 Limited Service Transfer Switch Controller can be used for motors 30HP or less, driving booster pumps or special fire service pumps where acceptable to the authority having jurisdiction. They are available with across-the-line starting only, with starting inrush current approximately.

FT30 Across-the-Line

The FT30 Transfer Switch Controller operates across-the-line where full voltage is applied to the motor for starting by the use of a single motor contactor. Starting inrush current is approximately 600% of rated full load amperes.

FT40 Part Winding

The FT40 Transfer Switch Controller is a full service, part winding reduced voltage controller. A part winding fire pump controller reduces the starting current by up to 40% while maintaining up to 50% motor starting torque.

FT50 Primary Resistor

The FT50 Transfer Switch Controller is selected when it is necessary to meet limitations on inrush current. A resistor is inserted in the power supply to the motor for a smooth acceleration. The main contactor by-passes the resistor after a short acceleration time and applies full voltage to the motor terminals.

FT60 Autotransformer

The FT60 uses an auto-transformer inserted in the power supply to the motor to reduce the voltage at the motor terminals and to provide a smooth acceleration. The main contactor by-passes the autotransformer after a short acceleration time and applies full voltage to the motor terminals.

FT70 Wye Delta (Star-Delta) Open

The FT70 Transfer Switch Controller uses a method of connecting the pump motor windings into wye configuration to start, then switching to a delta configuration to run which significantly reduces the starting current of the motor.

FT80 Wye Delta (Star-Delta) Closed

The FT80 Transfer Switch Controller uses a method of connecting the pump motor windings into wye configuration to start, then switching to a delta configuration to run. This reduces the starting current of the motor significantly.

FT90 Soft Start

The FT90 LMR Soft Start Transfer Switch Controller incorporates a solid-state starter which provides a step-less, smooth current ramp to the motor. This characteristic eliminates current surges and mechanical torque transients.