The LDB120 and LDX-C120 Series are 120 W integrated DIN rail battery charger / DC UPS power supplies, suitable for wide variety of industrial applications. These units have received market approval for their high efficiency, excellent reliability and compactness. The LDB120 is powered by a single phase AC input and the LDX-C120 is powered by 12 V or 24 VDC input. The LDX-U20 is a microprocessor-controlled DC-UPS rated 20 A, usable in 12 V or 24 V systems. Voltage supplied by a DC source is monitored and in case of a power failure, a backup battery is connected to the load. When powered externally, the unit charges the battery via an integrated battery charger supporting various battery chemistries.