A digitally adjustable monitoring relay designed for direct mounting onto 3RT2 Size S0 contactors. It provides comprehensive 3-phase current monitoring (4-40A) with advanced protections for phase sequence, cable breaks, and residual current, ensuring maximum motor and system reliability.
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.
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
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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| SKU / Model | 3RR2242-1FW30 |
|---|---|
| Weight | 0.280 kg |
| Dimensions | 99.00 × 117.00 × 57.00 mm |
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