It's rated for 1 Hp light-overload use (UL) at 2.1 A output current on a 440...480 V, 3-phase supply. The 50/60 Hz frequency rating covers both standard line frequencies.
The NEMA Type 3R enclosure means it's rated for outdoor installation — rain-tight, sleet-resistant, and suitable for washdown areas. No extra weatherproof cabinet needed if you're mounting it on a wall or rooftop. The integrated circuit breaker and fuse simplify the upstream protection: one incoming feed, no separate disconnect or fuse holder to spec.
The drive is listed for light-overload use at 1 Hp (2.1 A). That's the UL rating — if you're running a pump or fan that doesn't need heavy starting torque, this fits. The 440...480 V input range covers 460 V nominal with tolerance for voltage sags.
