The Maxwell SCR-480H Series is a compact and highly reliable single-phase AC voltage regulator module designed for precise phase angle control. Utilizing a 0-10VDC analog input signal, this module allows for smooth, stepless adjustment of AC load voltage up to 480VAC. Engineered with advanced zero-crossing detection and optocoupler isolation, it ensures safe and interference-free operation between the low-voltage control circuit and the high-voltage power circuit. Available in a wide range of current ratings from 25A to 120A, the SCR-480H features a robust, space-saving design with pluggable terminal blocks for effortless wiring and maintenance. When paired with Maxwell's dedicated heatsinks, it delivers exceptional thermal performance, making it an ideal open-loop power control solution for both resistive and inductive industrial loads.