The EMD-BL-V-230 Monitoring Relay (Item No. 2903523) is a reliable electronic monitoring relay designed for continuous supervision of single-phase voltages in demanding industrial and building automation environments. It supports 24 V AC/DC and 230 V AC applications and provides undervoltage and window monitoring to help maintain system safety and operational availability.

As system complexity and safety requirements continue to increase across industries such as machine building, chemical processing, building technology, and energy systems, constant monitoring of key electrical parameters is essential. The EMD series monitoring relays are engineered to detect voltage irregularities early, helping prevent costly downtime and system failures.

The EMD-BL-V-230 features color LED indicators to clearly display operating states, while detected faults can be transmitted to a controller via a floating changeover contact or used to automatically shut down affected system sections. Integrated response delays ensure short-term voltage fluctuations outside the set range are tolerated, preventing unnecessary interruptions.

With its compact design, screw connection terminals, and dependable performance, this monitoring relay is an ideal solution for maintaining error-free, cost-effective operation in modern electrical systems.