I'm attempting to power a 50kW DC Fast Charger with 3 phase 277/480V. It needs ~55kW which is 66A per phase. I'm trying to find a contactor. This one is CDC65-24. It is a 3 pole, 100A continuous. However, when you look at the technical information, it says at 3 phase 400-480V it is rated at 50HP (horsepower). This is much less than 100A per phase.
50HP = 37kW 37kW/277V/3poles = 44.5A
What rating should I go off? Does the HP rating only apply to motors?