The Eaton Cutler-Hammer Mechanical Interlock Arm is designed for use with the NG 400A Main Center, providing a secure and reliable interlocking mechanism. This component enhances safety by preventing simultaneous operation of multiple circuits, ensuring compliance with electrical standards. Constructed from high-quality materials, it offers durability and longevity in demanding environments. The interlock arm is easy to install and integrates seamlessly with existing systems, making it an essential accessory for maintaining operational safety in electrical installations.