The Maxwell MS-1VD2238 Series is a highly cost-effective, high-accuracy single-phase isolated SCR power regulator designed for precise phase angle control. Featuring a versatile multi-input design, this advanced thyristor module simultaneously supports 0-5Vdc, 0-10Vdc, 4-20mA, and potentiometer control signals without requiring hardware modifications. Engineered with optical isolation between the input and output circuits, it ensures maximum operational safety and signal integrity. Available in a wide current range from 10A to 200A for both 220Vac and 380Vac loads, the MS-1VD2238 series incorporates a built-in soft start circuit and an internal buffer (snubber) to protect against voltage surges. Housed in a durable, fire-retardant enclosure with resin sealing, this panel-mounted regulator is the ideal solution for controlling resistive heating elements in demanding industrial environments.