Siemens 3RR2143-1AW30 New In Box3RR2143 1AW30 Siemens Description: Monitoring relay, can be mounted to Contactor 3RT2, Size S2 basic, analog adjustment Apparent current monitoring 8 80 A, 50 60 Hz, 2 phase Supply 24 240 V AC DC 1 change over contact Monitoring for Current overshoot and undershoot Phase failure, Cable break with or without fault buffer ON delay 0 60 s Noise pulse suppression 0 30 s Switching hysteresis 6% Screw connection system Weight: 0. 2kg SKU: 3RR21431AW30