Monitoring relay, Features: Ground fault current monitoring via core balance current transformer (CBCT) for 1 and 3-phase systems, True RMS measurement, Time functions: Power ON/Trip time/Recovery time delay (0.5-9,9/0-99.9 s), Additional features: Alarm display; Locking; Reset, 3-digit LCD with backlight, Built-in current transformer, Adjustable switching hysteresis, Alarm output: 2 x NO/NC, 10 mA-30 A, Supply voltage: 230 V AC, Dimensions: 35 x 90 x 70.5 mm, Mounting: 35 mm DIN-rail, Terminal connection