The RX300 Earth Leakage Relay is a comprehensive solution for detecting earth leakage currents in electrical systems. It offers real-time monitoring, precise fault detection, and seamless protection. The relay features adjustable earth leakage thresholds and customizable time delays, allowing for flexible configurations in various operational environments. It also includes a self-reclosing feature to restore power after transient faults, minimizing downtime. The relay also features built-in self-test, soft recovery, and fail-safe mechanisms, and an Internal Relay Failure (IRF) alarm for early warning. The user-friendly interface with NFC technology simplifies configuration and monitoring. The relay meets IEC 60255 standards and is suitable for harsh industrial environments. With an operating temperature range of -10°C to 55°C, IP54 enclosure protection, and resistance to high humidity, it is suitable for harsh industrial environments. The RX300 is a state-of-the-art solution in electrical protection systems.