Parallax 55RU - Three-Stage Converter Replacement 55 Amp - For RV

55TCRU 55 Amp Replacement Upgrade for 6300/7300/500 Series The temperature compensated 55TCRU lower sections slide in for a simple upgrade of 6300/7300 and 500 (555) series power centers. Provides filtered DC power that is free from spikes and surges no matter how unstable the AC power source. These power sources are as quiet as they are clean. Operation is nearly inaudible, as the only sound comes from a whisper quiet cooling fan. Full output rating available for battery charging. Works with or without a battery. Includes new fuse board. FCC Class B certification. UL and cUL listed