Siemens Current monitor 230VUC 4-40A max.Ansp=99s 3RR2242-1FW30

Monitoring relay, mountable on contactor 3RT2, size S0 standard, digitally adjustable. Apparent/real current monitoring 4...40 A, 20...400 Hz, 3-phase. Supply 24-240 V AC/DC, 1 changeover contact, 1 semiconductor output for alarm and warning. Monitoring for current over- and under-run, phase loss, wire break, phase sequence, earth fault, blocking current. Warning and alarm thresholds with or without fault memory. Start-up delay 0-99 s, disturbance peak suppression 0-30 s, pause after fault 0-300 min. 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 break, phase loss, phase sequence, earth fault, motor blocking, and more ensures increased system availability. Actual value displays, status messages, and clear fault messages enable quick and reliable diagnosis. Control connection via IO-Link is also possible.

You also save costs, as only one device is required to monitor a motor across the entire torque curve, and no separate current transformers are needed. The direct mounting on the 3RT2 contactors eliminates additional wiring effort in the main circuit. Additionally, benefit from the wide voltage 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 measurement ranges, with two different supply voltages and two connection types. Suitable carriers are available for the standalone installation of the 3RR2 monitoring relays. SIRIUS relays - a program for all cases.