The 8300 Series brings output amperages to 30-Amp shore services that have never been seen before. The 8355A is a 30-Amp Power Center with a three-stage 55-Amp Converter Charger and ATS301 automatic transfer switch. 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.