Digital monitoring relay for residual current monitoring (with current transformer 3UL23) Setting range 0.03...40 A separate for warning threshold and switch-off value Supply voltage AC/DC 24 .. 240V, 50 .. 60Hz Start-up and tripping delay 0.1 to 20 s Switch-off hysteresis up to 50% Warning hysteresis 5% fixed Width 22.5 mm, 2 changeover contacts with or without fault memory Screw connection Digitally adjustable residual current monitoring relay SIRIUS 3UG4 for monitoring systems for residual currents, e.g. as a result of dust deposits, moisture, porous cables or capacitive residual currents. Worldwide use thanks to wide voltage supply and international certificates. Fast commissioning possible thanks to menu-guided parameterization and actual value display for limit value determination. The device has a permanent display of the actual value or type of error, high measurement accuracy and permanent self-monitoring. Device replacement possible without rewiring thanks to removable terminals. Reliable system diagnostics thanks to clear error messages on the display and switchable error memory. High flexibility and space saving thanks to the installation of the associated 3UL23 transformer inside or outside the control cabinet.In addition to screw connection technology, the devices are also available with spring-loaded connections for a quick, maintenance-free and vibration-proof connection. They are optionally available with IO-Link.Note: Please order the necessary residual current transformer 3UL23 separately. Other comprehensive accessories, such as device identification plates, push-in tabs and cover caps, are standard for all relays.SIRIUS relays - a program for all cases.