The 278441 is a ZB series thermal overload relay designed for industrial motor protection. It features a model code of ZB12-12 and is suitable for currents ranging from 9 to 12 A. The relay includes one normally open (N/O) and one normally closed (N/C) contact, allowing for versatile control and safety functions. It is designed for direct mounting with an IP20 enclosure rating, ensuring adequate protection in typical industrial environments. The relay supports mechanical reset, test and reset buttons, and manual or automatic reset options, making it suitable for integration into various control systems. Its compact design has a length/depth of approximately 88 mm.

Eaton specialises in power management and industrial automation solutions, offering products such as circuit protection, drives, control systems, and hydraulic components. Their technologies focus on improving efficiency, safety, and sustainability across diverse industries.