GE 5KS405DAJ6008 - GE's Ultra™ WPI VHS motors are high-performance electric motors available with 2, 4, or 6 poles. These motors boast NEMA Premium efficiency and are suitable for 60 Hz applications (de-rated at 50 Hz). They feature a NEMA Design B frequency and have received UL and CSA approvals. Operating at altitudes of up to 3300 feet and ambient temperatures of 40ºC, they are equipped with special balance for minimal vibration (0.075 IPS) and shaft slinger bearing protection. Cast iron construction, SAE fasteners, and a Trickle Treat system for insulation make them durable.