With signaling function and function display. The following signals are covered by the protection of analog signals and current loops (CL - Current Loop): Signals from current loops (analog measurements from encoders over long distances) 4-20 mA, 0-20 mA, etc. Two, three, and four-wire without common reference potential, e.g., level measurement. Signals from voltage transmitters (analog measurements of 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 2 analog signals. Design with ground-free PE connection to avoid potential differences. Applicable according to installation standard IEC 62305 (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 voltage levels for quick identification in the control cabinet. Safety function by coding element for different voltage levels.