ABB REA101 Arc Protection Relay

Description

The ABB REA101 Arc Protection Relay is part of the REA 10_ series, designed to detect and isolate arc faults in air-insulated switchgear. It enhances personnel safety and protects equipment by issuing rapid trip commands to circuit breakers feeding the faulted zone.

Specifications

• Model: REA101
• Application: Arc fault detection and protection
• Voltage Range: 24–250 VDC / 110–240 VAC
• Trip Time: < 2 ms (typical)
• Sensor Types:
  • Bare-fiber optic sensors (detect light along full length)
  • Lens-type sensors (installed per compartment)
• Sensor Inputs: Up to 30 light sensors
• Relay Outputs:
  • 3 × Form C flame relays (NO/NC)
  • 1 × Form C fault relay (NO/NC)
• Communication: Modbus, Profibus (optional)
• Mounting: DIN rail or panel
• Operating Temperature: -10°C to +55°C
• Protection Class: IP20
• Condition: New
• Warranty: 12 months
  

Features

• Ultra-Fast Fault Isolation: Trips circuit breakers within milliseconds to contain arc damage
• Dual Detection Logic: Detects arc light alone or combined with overcurrent for selective tripping
• Flexible Sensor Configuration: Supports both bare-fiber and lens-type sensors for tailored coverage
• Redundant Design: Optional dual-channel setup for high-reliability installations
• System Integration: Compatible with ABB switchgear and third-party systems via standard protocols
• Safety Investment: Ideal for retrofitting older switchgear to meet modern safety standards
• Industrial Use: Widely deployed in power generation, petrochemical, and metallurgical sectors