This is the Murr Elektronik 7000-18081-6160150 MPRO-PS Bus 24 DC/2-5A, a 24 VDC Bus power supply in the MPRO series. It is designed to be used in a distributed automation system, such as a bus-based fieldbus, and provides up to 2.5A of short circuit current at 24 VDC, with a power capacity of 60W. It also has a two-wire connection for status feedback to the system's control equipment and a primary fuse for protection.