The NG4-F power supply unit supplies a regulated direct voltage of 24 V DC / 16 W to supply devices in the I/O components product family. The secondary voltage can only be tapped on the right-hand side of the front of the device via a plug-in terminal and on the spring-loaded terminals. The bus communication can be tapped on both sides of the front of the device via plug-in terminals. Parallel operation of several power supplies is not permitted. Suitable for decentralized installation on TH35 mounting rail according to IEC 60715 in electrical distribution boards. Connection with spring-loaded terminals (push-in)