ABB REX 521 Feeder Protection Relay – Reliable Protection for Feeders and Busbars

The ABB REX 521 is a proven feeder protection relay designed to provide essential protection for feeders and busbars in utility substations and industrial power distribution systems. It ensures safe, efficient, and uninterrupted power flow by detecting and responding quickly to electrical faults.

Built for both basic and advanced protection, the REX 521 helps prevent equipment damage and power outages, making it an ideal choice for power utilities and industrial facilities.

Key Features:

• Comprehensive Feeder Protection: Protects against overcurrent, short circuit, and earth faults

• Busbar Protection: Monitors and safeguards critical switchgear components

• Reliable Performance: Time-tested technology from ABB for high system availability

• Flexible Installation: Suitable for both new and retrofit projects

Applications:

• Utility substations

• Industrial power distribution systems

• Motor control centers

• Medium-voltage switchgear