OHF1C4 is ABB’s flange-handle operating mechanism for switch-disconnectors, used to manually operate the associated ABB disconnect switches. It features a 36-inch (91 cm) cable linkage for remote operation from a control point, enabling safe and ergonomic control of the switch. In ABB catalogs, OHF1C4 is listed as a flange-handled operating mechanism compatible with NEMA 4 and 4X enclosures, identified by part number OHF1C4.
