The ABB 1SDA104853R1 is a specialized rotary handle operating mechanism designed for Tmax XT series molded case circuit breakers (MCCBs), specifically the XT6 model. This accessory enhances manual control and safety in industrial power distribution systems, offering adjustable depth configuration (500 mm) and integrated padlock/door interlock features. Engineered for durability, it combines a zinc alloy handle with corrosion-resistant coating and a glass-fiber reinforced polyamide housing, ensuring reliable operation in harsh environments. The mechanism supports lockout/tagout (LOTO) procedures with provisions for up to three padlocks, aligning with industrial safety standards.