Bel Power Solutions offers accessory modules to increase system integrity. The LDX-D20/D50 is a Universal Active ORing Controller used for redundant connection of two DIN rail DC power supplies of the same rating, with any voltage in the range 12 – 85 VDC and load current ≤ 50 A. It is a CPU-controlled device and responds to a wide range of applications where strong redundancy of DC power supplies are needed. The LDX-B20 monitors the voltage coming from a DC power supply and in the case of a failure, a capacitor bank is used to keep the output regulated for at least 300 ms at full load. The LDX-L30 are Class I isolation devices suitable for SELV and PELV circuitry.