Square D Magnetic Motor Starter: 4 NEMA Size, 135 A Amps AC, 480V AC, No Enclosure, 50 HP @ 3 Phase - 240V

NEMA Magnetic Motor Starters with Standard Overload Relays • Melting alloy thermal overload relays Class 20 thermal protection 2- or 3-pole, 60/50 Hz, 600VAC max. Thermal units sold separately. Full-voltage starters start and stop 1- and 3-phase AC motors. Manual push-to-test and visible trip indicator. Trip-free construction allows overload relay to trip even if reset lever is blocked or in the reset position. Normally open holding circuit contact for 3-wire control. Angled contacts provide high contact pressure and positive seating. Spring-assisted gravity dropout on de-energizing contacts quickly extinguishes any arcing. UL Listed and CSA Certified.