The 8811K17 is a single-pole single-throw (SPST) heavy-duty AC Toggle Switch with brass screw termination and OFF-NONE-ON function. The military purpose lever sealed switch has maintained function and thermoset moulding base. The switch mechanisms are completely enclosed to resist the entrance of contaminants into the switch and all metal parts are plated to resist corrosion. The switch has silicone rubber lever seal assembled between the lever and the bushing to resist the entrance of contaminants such as dust, sand or water into the contact structure.