π΅ ABB REA101-CAA β Arc Protection Relay Rev B
High-Speed Arc Fault Detection and Protection for Electrical Systems
The ABB REA101-CAA Arc Protection Relay Rev B is a sophisticated protection device designed to detect and isolate arc faults in medium- and low-voltage electrical systems. It enhances personnel safety, prevents equipment damage, and ensures continuity of service by rapidly identifying arc flash events and triggering protective actions.
This relay is widely deployed in industrial plants, power distribution networks, and critical infrastructure applications where arc fault hazards pose significant safety and operational risks. With advanced sensing, configurable thresholds, and fast tripping, it provides reliable protection while minimizing unnecessary downtime.
π Technical Parameters (Datasheet-Style Table)
| Parameter | Specification |
|---|---|
| Model | REA101-CAA Arc Protection Relay |
| Revision | Rev B |
| Protection Type | Arc flash / arc fault detection |
| System Voltage | 24β690 V AC/DC (configurable) |
| Tripping Time | < 10 ms typical for arc events |
| Inputs | 3-phase current transformers, voltage inputs, optical arc sensors |
| Outputs | Trip relays, auxiliary alarm contacts |
| Communication | Optional Modbus RTU / IEC 61850 interface |
| Operating Temperature | β20 Β°C to +70 Β°C |
| Storage Temperature | β40 Β°C to +85 Β°C |
| Mounting | Panel or DIN rail mount |
| Environmental Rating | Industrial-grade, vibration and EMI resistant |
| Indicators | LED status for arc detection, relay trip, and faults |
| Diagnostics | Event logging, trip history, self-test functionality |
β Functional Features
π© High-Speed Arc Detection
Utilizes advanced sensing and signal processing to detect arc faults within milliseconds, minimizing damage and improving system safety.
π© Configurable Trip Settings
Trip thresholds and delay settings are programmable to match system characteristics, ensuring selective operation without false trips.
π© Comprehensive Alarm & Event Logging
Provides real-time alarms and stores event history for maintenance, troubleshooting, and compliance reporting.
π© Integration with Supervisory Systems
Supports communication protocols such as Modbus RTU and IEC 61850, enabling remote monitoring and integration into SCADA or DCS platforms.
π© Robust Industrial Design
Rugged enclosure and EMI-resistant electronics ensure reliable operation in harsh industrial environments.
π Installation & Operation Notes
- Mount the REA101-CAA relay close to the protected switchgear or bus system.
- Connect current transformers, voltage inputs, and arc sensors according to ABB wiring specifications.
- Configure trip thresholds, delays, and communication parameters during commissioning.
- Regularly test the relayβs functionality and review logged events for preventive maintenance.
Authorized distributors and technical support are available via:
π https://www.dcsplcsystem.com/
π https://www.dcsplcsystem.com/abb
π¦ Recommended Similar Products
| Model | Description | Function | Application Focus |
|---|---|---|---|
| REA100-CAA | Arc protection relay | High-speed arc fault detection | Industrial and commercial switchgear |
| REX640 | Multiline protection relay | Comprehensive protection and automation | Medium-voltage distribution networks |
| REF615 | Feeder protection relay | Overcurrent, earth-fault, and arc detection | Industrial feeders and substations |
| REJ601 | Generator protection relay | Arc detection and generator protection | Power plants and industrial generators |
| RAC120 | Arc flash detection system | Fast trip for LV/MV systems | Critical infrastructure and industrial installations |
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