The 50R4002 is a 1-phase voltage monitor from Littelfuse Inc, designed to provide accurate voltage readings for systems operating between 380-480V. This device is essential for monitoring electrical systems, ensuring they operate within safe voltage levels. Its compact design allows for easy installation in control panels, and it features robust construction for durability. The voltage monitor complies with industry standards, providing reliable performance in various applications. With its precise measurement capabilities, the 50R4002 helps prevent equipment damage and enhances operational efficiency.