BFK320 PS113200 KNX power supply 320mA KNX power supply 320mA to provide supply to other KNX devices connected to KNX BUS. It includes a 29V DC auxiliary output. The device has short circuit and overvoltage protection. KNX choke included. Supply: 230V AC Current: KNX BUS + AUX < 320mA Output voltage: 29V DC DIN rail mounted (4 modules) documentation   Datasheet software Example 1