• HAZARDOUS DUTY® DIVISION I EXPLOSION PROOF MOTORS • CLASS I AND II, GROUPS C, D, F & G • SEVERE DUTY, THREE PHASE MOTORS • FEATURES: • 56 frame rolled steel, 143-256TC cast iron “Blue Chip®” thermal protection • Thermal protection, 56 frame auto overload, 143-256TC T-stats • Conduit box shipped loose on 56 frame, installed on 143-256TC • Service factor 1.0 unless otherwise noted • 56 frame class I, groups C & D, class II, groups F & G • 143-256TC class I, group D, group C as noted, class II, groups F & G • T3B temperature code • UL file # E12044 • CSA file #LR47504 • Model 056T17G15599