Reliance Controls PB Series 50 amps 120/240 V 1 space 1 circuits Surface Mount Power Inlet BoxThe raintight NEMA 3R PBN Series non metallic power inlet box is designed for use with the Pro Tran transfer switches and Panel Link manual transfer panels and generator ready load centers. This power inlet box must be installed outdoors in an open area where the generator is being used. Using one of the three inch knockouts (one each on the sides and back) the power inlet box can be wired directly to the transfer switch or panel. The patented design