The 8300 Series brings output amperages to 30-Amp shore services that have never been seen before. the 8355 is a 30-Amp Power Center with a three-stage 55-Amp Converter Charger. Manufactured to operate on 120VAC 15 Amp branch circuits leaving plenty of power for running other 120VAC devices. The unit is built with a durable steel enclosure and has an 11-position fuse block with blown fuse indicators. This product can be upgraded to TempAssure™ technology by installing the Parallax 4400TAU module to maximize battery charging.