1.5hp 115 Volts; 2 hp 230 Volts Single Phase 2 hp 230 Volts; 1 hp 460 Volts 3 phase Dimensions: W 2.25" H 4.5" D 4" Position = Spring Return Steel Handle -- Made in the USA Reversing switch for electric motors, single phase only. Instructions included. Note: We recommend this control only be installed by a qualified technician that understands how electric motors are wired. Motor must have wire leads for connections. If motor only has a terminal board it will be very difficult to wire the switch. This installation would most likely require a skilled electric motor technician. Please do not call us and ask us how to connect the switch to the motor, as we will not be able to assist you. 1 Year Manufacture Warranty