The Littelfuse 3-Phase Voltage Monitor 190-2 is an essential device for monitoring voltage levels in three-phase systems. This monitor is designed to detect under-voltage and over-voltage conditions, ensuring the protection of connected equipment. It features a compact design and is rated for a voltage range of 208-480V, making it versatile for various industrial applications. The device is equipped with LED indicators for easy status monitoring and complies with ANSI standards for safety and reliability. Its robust construction ensures durability in demanding environments, making it a reliable choice for voltage monitoring.