• HAZARDOUS DUTY® DIVISION 1 EXPLOSION PROOF MOTORS • CLASS I AND II, GROUPS D, F & G • BLUE CHIP SERIES® SEVERE DUTY, NEMA® PREMIUM EFFICIENCY, THREE PHASE MOTORS • FEATURES: • 10:1 variable torque, constant torque, as noted • CR200 corona resistant, 200°C rated magnet wire • 1.15 service factor • Normally closed thermostats (must be connected to control circuit) • Meets temperature code T3B • All cast iron construction (except as noted) • External surface treated with epoxy paint • Nameplated 60/50 hertz, 190/380 volts, at next lower horsepower, as noted • UL listed file no. E12044 • CSA certified file no. LR47504 • Three year warranty • Model 143TTGN6551