NKK Switches High Capacity Standard Size Toggle S821/C-UL-AT401A

The S821/C-UL-AT401A is a double-pole, single-throw toggle switch with screw lugs, designed for resistive and inductive loads up to 30A at 125V AC and 30A at 250V AC, with a 30A DC rating at 30V. It features a brass toggle with chrome plating, a melamine phenolic case, and brass terminals with silver or nickel plating. Operating temperature ranges from -10°C to +70°C. The switch meets UL and cULus recognition when ordered with the appropriate marking, as indicated by the /CUL suffix. Mounting requires a 0.177" (4.5mm) maximum panel thickness and uses a standard M4.5x6 keyway. The AT401A suffix indicates inclusion of a splashproof boot assembly with hex nut and o-ring. Mechanical life is 50,000 operations, and electrical life is 25,000 operations minimum. The physical dimensions align with the S821 model's 22.0mm mounting depth and 42.0mm overall length.