KNX power supply with 1 output and 1 choke, 640mA. Power supply to generate the necessary system voltage. One output 30 V DC with choke on bus terminal. Consists of a modular device with 3-pin QuickConnect plug-in terminals for the power supply, green LED to indicate power supply, red LED to indicate short circuit or overload protection, 2-pin KNX bus terminal and labeling field.