Load Interrupter Switchgear (LIS) - Upgrade, Retrofit & Retrofill Load Interrupter Switchgear (LIS) - Upgrade, Retrofit & Retrofill Medium Voltage LIS RetrofitABB's Medium Voltage LIS Retrofit solution provides reduced Arc Flash incident energy levels for customers on their existing MV equipment. Publications BrochuresCatalogs and Buyers GuidesPresentations Other Upgrade, Retrofit & Retrofill Automatic Transfer Switches (ATS) - Upgrade, Retrofit & Retrofill Circuit Breakers - Upgrade, Retrofit & Retrofill Conversion Kits & Trip Units - Upgrade, Retrofit & Retrofill Load Interrupter Switchgear (LIS) - Upgrade, Retrofit & Retrofill Motor Control Centers (MCC) - Upgrade, Retrofit & Retrofill
