The NGR MON AU UNIV. DUAL SC FBR 61850 K4 NC by LITTELFUSE is a robust monitoring relay designed for universal applications. This device supports dual communication protocols, ensuring compatibility with various systems. It operates within a voltage range suitable for both AC and DC applications, making it versatile for different setups. The relay is compliant with industry standards, ensuring reliability and safety in operation. Its compact design allows for easy installation in tight spaces, while the durable materials used in its construction provide longevity and resistance to environmental factors.