Siemens 3RR2141-1AA30 (3RR21411AA30), Monitoring Relay Attachable To Contactor 3Rt2. Size S00 Basic, Analog Adjustable Apparent Current Monitoring 1.6 - 16A, 50-60 Hz, 2-Phase Supply 24 V Ac/Dc 1 Co Contact Monitoring For Current Overshoot/Undershoot Phase Failure, Wire Break With Or W/O Error Log On-Delay 0-60 S Spurious Peak Suppr.0-30 S Switching Hysteresis 6% Screw Connection