Siemens 3RR2242-1FW30 Monitoring Relay, 3-Phase Current, Phase Protection Original Brand New

Overview

The Siemens 3RR2242-1FW30 Monitoring Relay is a high-precision, digitally adjustable device designed to ensure optimal protection and monitoring for 3-phase electrical systems. Compatible with Contactor 3RT2, Size S0, this relay delivers reliable current, phase, and residual current monitoring, helping prevent damage to equipment and reduce downtime.

Features & Function

• Mounting Compatibility: Directly mounts to Contactor 3RT2, Size S0 standard

• Current Monitoring: Digitally adjustable apparent/active current monitoring from 4…40 A, 3-phase

• Frequency Range: 20…400 Hz

• Voltage Supply: 24–240 V AC/DC

• Outputs: 1 change-over contact and 1 semiconductor output for alarms and warnings

• Comprehensive Protection: Monitors for current overshoot/undershoot, phase failure, cable breaks, phase sequence, residual current, and blocking current

• Customizable Thresholds: Warning and alarm thresholds with/without fault buffer

• Time Settings: ON delay 0–99 s, Noise pulse suppression 0–30 s, Pause after fault 0–300 min

• Connection: Screw connection system for secure installation

Benefit

• Enhanced Equipment Protection: Prevents damage caused by current and phase anomalies

• Reduced Downtime: Early detection of faults ensures faster maintenance and fewer interruptions

• User-Friendly Adjustments: Digital settings allow precise monitoring without complex wiring

• Versatile Application: Compatible with a wide range of 3-phase systems and industrial setups

• Reliable Alarm System: Immediate warnings for critical conditions, ensuring operational safety

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