The Manual Transfer Interlock Kit provides enhanced safety when using back-up power sources, ensuring utility power sources are turned to the OFF position when emergency back-up power sources are being used, and vice-versa. Compatible with all Leviton Load Centers (not available in Canada) Leviton is proud to bring the Load Center into the 21st century with a focus on improved safety and ease of installation. Thanks to its revolutionary design, all hot and neutral wires terminate at custom lugs in the panel, rather than at the circuit breaker*, which allows the entire panel to be wired at rough-in. Branch circuit breakers are simply plugged-in at final installation, increasing jobsite efficiency. Leviton offers a full line of accessories to meet every need when installing the Leviton Load Center. Locking devices, lugs, ground and neutral bar kits, conduit hubs, sealing rings and more are all available to ensure an accurate and quick installation. NOT Available in Canada!