Overvoltage protection. Measurement, control, and regulation without signaling function or function display. The following signals are covered by the protection of analog signals and current loops: signals from current loops (analog measurements from encoders over long distances) 4...20 mA, 0...20 mA, etc. Two, three, and four-wire configurations without common reference potential, e.g., level measurement. Signals from voltage transmitters (analog measurements from transmitters over short distances) 0...10 V, PT 100, etc., e.g., temperature measurement. Pluggable arrester with interruption-free and impedance-neutral plugging or unplugging. Testable by test instrument V-TEST. Space-saving design for two analog signals. Design with ground-free PE connection to avoid potential differences. Can be used in accordance with the IEC 62305 installation standard (D1, C1, C2, and C3). Integrated PE foot safely dissipates up to 20 kA (8/20 μs) and 2.5 kA (10/350 μs) to PE. Colored marking of the voltage levels for quick identification in the control cabinet. Safety function by coding element for different voltage levels.