Range:15 amps to 500 amps, DC voltage to suit battery bank, Input supply :Single phase & three phase, Topology:Float, Boost, Float cum Boost Float and Boost, Redundant. Efficiency better than 80% at nominal input and output from 50% to 100% load, High reliability and minimum downtime due to usage of ribbon cable connectors, Built-in status indication LEDs for diagnosis and automatic electronic trip and pulse inhibition, Ripple is less than 3% of RMS of full load current.