The TERASAKI ESZ-215 is a high-performance digital earth leakage relay designed to provide robust protection for electrical systems against earth faults. It continuously monitors the earth leakage current and triggers a circuit breaker when the current exceeds a user-defined threshold, effectively preventing electrical shock hazards and reducing the risk of fire. Featuring a clear digital display, the ESZ-215 allows for precise adjustment of both sensitivity (IΔn) and operating time delay (Δt), ensuring optimal coordination and selectivity in industrial and commercial applications. Its reliability and advanced features make it an essential component for enhancing electrical safety and system integrity.