ABB REL561 1MRK002496-AC Protective Relay Module

This protective relay module ensures electrical system safety with precision monitoring and fault detection. Designed for industrial power networks and utility grids, it handles overcurrent, earth fault, and differential protection tasks while maintaining compliance with IEC and IEEE standards.

Commonly deployed in power generation plants, oil refineries, and manufacturing facilities, this module integrates with SCADA systems for real-time monitoring. Engineers in steel mills report reduced downtime after installing these relays for motor protection circuits. Our inventory also includes complementary ABB components like the PM866 controller and 5SHY3545L0010 power module for system expansions.

The relay’s digital signal processor enables millisecond-level fault detection, crucial for preventing transformer damage during short circuits. Its modular design supports hot-swapping failed units without shutting down entire systems – a feature particularly valued in 24/7 chemical processing plants. While the base model lacks built-in redundancy, parallel configurations with backup REL561 units can achieve 99.999% uptime when paired with ABB’s Redundancy Switch Module.