The IEEE-841 motors are designed for extreme applications where downtime is critical. The severe duty motors feature cast iron construction for extra durability. They are designed for a range of processing industry conditions. They are built Class F insulation, Class B temperature rise, and a 1.15 service factor. Motors through 575 volts use ISR inverter spike resistant wire, making them “inverter-ready.” The motors provide extra protection with corrosion resistant epoxy finish, regreasable ball bearings, oversized rotatable cast iron conduit boxes, stainless steel nameplate and corrosion resistant hardware.