REA101 ABB Arc Protection Relay for Medium

Description

The ABB REA101 is part of the REA arc protection system, engineered to detect and respond to arc faults in air-insulated switchgear panels. It uses optical sensors to detect the intense light emitted during an arc flash and can optionally combine this with overcurrent detection for enhanced selectivity. This relay is designed to issue trip commands within milliseconds, significantly reducing the risk of injury and equipment damage. It supports modular configuration, allowing users to tailor the system to specific switchgear layouts. Moreover, it is compatible with IEC 61850-based automation systems, making it suitable for both new installations and retrofit projects. The REA101 is widely used in power distribution, industrial plants, and renewable energy systems, where fast fault isolation is critical to maintaining operational safety and continuity.