!!! product phase-out !!! the preferred successor is 3UG5825-1AA40 digital monitoring relay for residual current monitoring with residual-current transformer 3UL23 for IO-Link adjustment range 0.03 A to 40 A separate for warning threshold and trip value ON-delay and tripping delay 0 to 999.9 s shutdown hysteresis up to 50% warning hysteresis 5% fixed width 22.5 mm - Siemens | JRB