Monitoring relay, mountable on contactor 3RT2, size S0 Basic, analog adjustable. Apparent current monitoring 4...40 A, 50...60 Hz, 2-phase. Supply 24-240 V AC/DC, 1 changeover contact. Monitoring for current over- and under-run, phase failure, wire break with or without fault memory. Start-up delay 0-60 s, disturbance peak suppression 0-30 s, switching hysteresis 6%. Screw connection technology. SIRIUS 3RR2 monitoring relay for plugging onto SIRIUS 3RT2 contactors or for standalone use for multi-phase current monitoring of the entire system or the driven process. Reliable monitoring for cable breaks, phase failures, phase sequence, earth faults, motor blocking, and more enhances system availability. Actual value displays, status messages, and clear fault indications allow for quick and reliable diagnostics. Control connection via IO-Link is also possible. You save costs as only one device is required to monitor a motor across the entire torque curve, and no separate current transformers are needed. Direct mounting on the 3RT2 contactors eliminates additional wiring effort in the main circuit. Additionally, benefit from the wide-range power supplies for global use. Available are analog adjustable, 2-phase variants and digitally adjustable, 3-phase variants (with and without IO-Link), each in three sizes with different current measuring ranges, two different supply voltages, and two connection types. Suitable carriers are available for standalone use of the 3RR2 monitoring relays. SIRIUS relays - a program for all cases.