This part is a 24 V DC, 7 amp, 4-pole diode bridge rectifier module from Murr Elektronik. It is designed to switch current over one or two circuits simultaneously. It has screw terminals for easy connection to control circuits, is designed to be mounted on a DIN Rail, and has a robust housing. The module also has over-voltage protection, screw down terminals for protective device connections, and double insulation between the input and output.