Square D,STARTER MOTOR CONTROL <1000VAC,0,120VAC@60Hz - 110VAC@50Hz,18 A,3-Phase,3HP@200/230VAC - 5HP@460/575VAC,3P,600VAC,NEMA 1,Non-Reversing Starter,S,Screw Clamp,Thermal - Melting Alloy,UL Listed - CSA Certified,Used for Full-Voltage Starting and Stopping of AC Squirrel Cage Motors