The FUJI ELECTRIC 4NK0HV is a robust thermal overload relay designed to protect electric motors and other equipment from overheating. This relay offers adjustable ampere ranges, allowing for precise calibration to match the specific motor's requirements. Features include automatic reset capabilities, a manual trip device, and open-phase protection, ensuring comprehensive safety and operational reliability. The ambient temperature compensator minimizes the impact of temperature fluctuations on performance, maintaining consistent protection across a wide range of operating conditions. Ideal for use in industrial machinery, pumps, fans, and other motor-driven applications.