The EATON Magnum Mechanism Trip Shaft Upgrade Kit (2A12888G03) is designed to enhance the performance of your Magnum circuit breakers. This upgrade kit includes all necessary components for a seamless installation, ensuring your breakers operate at peak efficiency. Constructed from high-quality materials, the kit is built to withstand the rigors of industrial environments. It is compatible with various Magnum models, making it a versatile choice for upgrading existing systems. This kit not only improves reliability but also extends the lifespan of your circuit protection devices.