The ELR30PN reliably monitors leakage currents up to 30 A and continuously displays them via an LED bar indicator. It offers adjustable sensitivity, time delay, test and reset functions, as well as two flexible relay outputs. The device automatically detects toroid faults or interruptions that require tripping. Its functionality is further enhanced by auto-reclosure, auto-reset, and pre-alarm features. In addition, predefined profiles for certain applications are available. Using NFC and a dedicated app, the user can configure all settings, adjust filter limits, and access historical data—all available in a compact DIN-rail housing with a wide auxiliary voltage range and IEC/UL certification.