Category Parameter Specification / Typical Value Application & Configuration Protected Circuit Signal circuits (e.g., 4-20 mA, digital I/O) Circuit Configuration 2-pole (Line-to-Line and Line-to-Ground protection) Connection In-series with the signal line Electrical Characteristics Nominal Voltage 8 - 24 V DC Max. Continuous Operating Voltage (Uc) ~30 V DC Nominal Current (In) Up to 250 mA Voltage Drop < 1.5 V Surge Protection Performance Standards Complies with IEC 61643-21 Nominal Discharge Current (In) 5 kA (8/20 μs) Max. Discharge Current (Imax) 10 kA (8/20 μs) Protection Level (Up) < 40 V (at In) Monitoring & Signaling (EA Option) Alarm Contact Floating changeover contact (SPDT) Contact Rating Typically 24V DC / 2A (or 230V AC / 2A) Function Changes state upon internal failure of the SPD, signaling the need for replacement. General Data Mounting 35 mm DIN Rail Connection Type Screw terminals (for both signal and alarm contacts) Housing Material Plastic (PA 6.6) Operating Temperature -40 °C to +80 °C Status Indication None (Visual status may not be present; reliance on alarm contact)
