The W99ADX-1 is a heavy-duty, thermoplastic switching mechanism manufactured by Schneider Electric. It is designed to control and monitor the flow of current between two conductors. The W99ADX-1 is typically used in the motion control and automation markets, such as industrial machinery, packaging, food and beverage processing, and aircraft applications. The mechanism is rated for up to 20 amps at 600 volts AC/636 amps DC, comes in a modular design, and is available with a variety of auxiliary contact configurations. It is UL listed and meets the requirements of UL 508 and UL 698.