Square D A1.39 (DF) Thermal Unit

The Square D A1.39 thermal unit is designed for protecting motors from overload conditions. This product is part of the broader Square D lineup which has been a trusted name in electrical distribution and protection since 1902. Founded by the Detroit Fuse and Manufacturing Company, Square D gained recognition for its innovative circuit breakers and electrical control devices. The A1.39 thermal unit operates at a range of 1.1 to 1.37 amps and is classified under Class 20, suggesting its suitability for a variety of industrial applications. It essentially functions as a motor protection device, ensuring that electric motors do not operate under excessive heat conditions which can lead to operational failures or permanent damage. This thermal unit plays a pivotal role in enhancing the safety and efficiency of machinery used in manufacturing, processing, and other industries that rely heavily on electric motors. Unique to Square D products like the A1.39 is the brand's commitment to reliability and compliance with industry standards, ensuring that customers receive robust protection for their equipment.