This APEM INC. part 3637NF/2 is a sturdy and reliable toggle switch that features a SPDT (Single Pole Double Throw) configuration with a round lever for easy operation. It has a quick connection for efficient installation and can handle up to 20A at 277VAC or 1118.55VA. This panel mount switch also includes threads for secure mounting, making it a versatile and high-quality option for various industrial applications.