Siemens Current monitoring relay 3RR2441-1AA40

Current monitoring relay for IO-Link, mountable on contactor 3RT2, size S00. Apparent/real current monitoring 1.6-16 A, 20-400 Hz, 3-phase. Supply voltage DC 24 V, 1 changeover contact. Monitoring for current over- and undercut, current asymmetry, phase failure, wire break, phase sequence, earth fault, blocking current, switching cycles, and operating hour counter. Warning and alarm thresholds, AUTO or HAND RESET, start delay 0-9999.9 s, switch-off delay 0-9999.9 s, restart delay 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 breaks, phase failures, phase sequence, earth faults, motor blocking, and more ensures increased system availability. Actual value displays, status messages, and clear error messages enable 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 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.