SIRIUS 3RR2 Monitoring Relays
for direct mounting on contactors for multi-phase current monitoring
The 3RR2 monitoring relays not only serve the monitoring of motors or other loads, but additionally also facilitate optimum current monitoring of the entire system or driven process. This for example allows for the early detection and signaling of load shedding or motor overloads. The 3RR2 monitoring relay for current monitoring is directly integrated in the load feeder. It is simply plugged onto the contactor. Also available with IO-Link connection.
Advantages at a glance
Direct mounting on 3RT2 contactors, i.e. no additional wiring expenditures in the main circuit
Optimally matched to the technical characteristics of 3RT2 contactors,
no separate current transformers required
2- or 3-phase current monitoring, apparent or active current monitoring
Display of actual value and status signals
Easy determination of threshold values thanks to direct reference
to actually measured values
Only one device is required for motor monitoring along the entire
torque curve
Monitoring for cable breakage, phase failure, phase sequence, fault
current as well as motor blocking
