Protective cap assembly for protecting toggle switch

The utility model discloses a protective cap assembly for protecting a toggle switch, which comprises a protective cap, a sealing ring and a fastening nut, the protective cap is mounted on the outer side of a knob handle, one end of the protective cap is connected with the fastening nut and mounted on a panel, and the sealing ring is positioned between the fastening nut and the panel. According to the utility model, the metal material adopts stainless steel with stronger salt mist resistance, and the non-metal material adopts low-temperature rubber with better plasticity, so that various non-sealed toggle switches can be matched; through the reasonable design of the structures of the metal piece and the rubber piece, especially the structural design of the connecting part, the air-tight sealing requirement can be met after riveting, and the range of the use environment of the toggle switch is effectively expanded; the assembly is convenient to assemble and disassemble, and is widely matched with various toggl