NASN 12VDC 100A rectifier charger power system composes of 2pcs 2U height hot swappable 12V 50A modular rectifier module. It's compact, light weight and easy to operate.Single phase power supply.Rectifiersl Wide temperature range (-40 to +75 C, derating above 45 C).Humidity 5-9% non-condensing.l T.H