As an interface, interface relays connect the electronic control level, for example PLC, with the sensor/actuator level. They perform various functions: switching of direct or alternating voltage loads with different ohmic, inductive and capacitive components, switching in the voltage range from a few mV to 250 V, switching in the current range from a few mA to 10 A, amplifying weak control signals, potential isolation of control and load circuits and signal multiplication. The CR-U series has 12 different coil voltages with 2-3 changeover contacts. A built-in test button for manual actuation and locking of the output contacts can be removed if required. Relays can be ordered with and without a built-in LED. Two base variants are available: standard base and logical base. Plug-in function modules such as reverse polarity protection / freewheeling diode, LED module, RC elements, overvoltage protection or multifunctional time modules expand the areas of application of the plug-in universal relays.
| Property | Value |
| Number of contacts as changeover contacts: | 2 |
| Rated control supply voltage Us at AC 50 Hz: | 0.0 V |
| Rated control supply voltage Us at AC 60 Hz: | 0.0 V |
| Rated control supply voltage Us at DC: | 12 V |
| Type of voltage for actuation: | DC |
| Design of the electrical connection: | Plug connection |
| Drive, polarity: | polarized |
| Height: | 54.4 mm |
| Width: | 35 mm |
| Depth: | 35 mm |
| Switching behavior of the drive: | monostable |
| Type of switching contact: | Single contact |
| With positively guided contacts: | no |
| With removable terminals: | no |
| Complete device with base: | no |
| Protection class (IP): | IP40 |
| Rated current: | 10 A |
| With LED display: | no |
