The Magic Chef 3040200056 Refrigerator Thermostat regulates the internal temperature to maintain proper cooling. Designed for compatible HMAR440 series refrigerators, this thermostat monitors temperature changes inside the compartment and operates the compressor by opening or closing the electrical circuit as needed. When the temperature rises above the set level, it signals the cooli... https://www.hnkparts.com/magic-chef-3040200056-refrigerator-t-stat-hmar440-series