Description
Interface relays connect the electronic control level as an interface, e.g. PLC to the level of the sensors/actuators. They take on different functions: Switching of DC or AC voltage loads with different ohmic, inductive and capacitive components, switching in the voltage range from several mV to 250 V, switching in the current strength range from a few mA to 10 A, amplifying weak control signals, potential separation of control and load circuits as well as signal multiplication. The CR-U series has 12 different coil voltages with 2-3 changeover contacts. A built-in test button for manual operation and locking of the output contacts can be removed if required. Relays with and without built-in LED can be ordered. Two base variants are offered: Standard and logical sockets. Plug-in function modules such as reverse polarity protection / snubber diode, LED module, RC elements, overvoltage protection or multi-functional time modules extend the application areas of the plug-in universal relay.