The LMI-XB Mechanical Interlock is a crucial safety accessory that prevents the simultaneous operation of two main electrical circuits, effectively safeguarding against overload and fire risks. Specifically designed for NXB-63 and NXB-63H series circuit breakers, this interlock ensures reliable manual switching between dual power supplies. It's a versatile solution ideal for enhancing electrical safety and compliance in diverse environments, including residential homes, commercial establishments, hotels, shopping malls, and other facilities requiring controlled power source management.