Square D By Schneider Electric 9999SA3 Start Stop Switch

Square D by Schneider Electric 9999SA3 is a Type S start-stop (on/off) push-button kit that mounts with Square D motor starters and contactors in NEMA 1, 3R, and 12 enclosures. It provides local motor control by integrating a start pushbutton and a stop pushbutton with a compatible Type S starter/contactor, enabling straightforward Start/Stop or On/Off operation directly from a control panel. This catalog number—9999SA3—is listed as a complete start/stop push-button kit (UPC 785901030171) for use with Square D contactors and starters. Schneider Electric's product literature confirms the 9999SA3 configuration and its Start Stop or On/Off push-button capability for use with Type S contactors in industrial panels. Typical applications include motor control in industrial panels for equipment such as fans, pumps, and conveyors where local Start/Stop control is required.