It carries a 30 hp motor rating at 460/480 V AC three-phase under UL/CSA standards, and the 24 V AC 50/60 Hz coil keeps control wiring simple in standard panels. The utilisation category covers AC-1 and AC-3, meaning it handles both resistive heating loads and full motor starting duty without derating.
Compared to the DPE50BD (50 A frame), the DPE40B7 shares the same physical footprint — 4.8 in depth, 2.2 in width, 4.8 in height — and the same mounting rail. The difference is the motor power rating: the DPE40B7 delivers 30 hp at 460/480 V AC three-phase, while the DPE50BD delivers 30 hp at the same voltage but with a higher current rating for heavier resistive loads. If your panel was wired for a DPE50BD, the DPE40B7 drops in without rewiring, as long as the load current stays under 40 A.
Mounts on a standard rail or plate. Power circuit screw terminals accept 2.5 to 25 mm² flexible or solid wire; torque to 62.0 lbf.in (7 N·m) for the larger lug range. Control circuit terminals use screw clamps rated for 1 to 4 mm², torqued to 15.05 lbf.in (1.7 N·m). The 3 NO pole configuration is non-reversing, so for reversing applications you need a second contactor and mechanical interlock.