The A3SSCA-6AAB-91 is a 3-position maintained-cam selector switch with one normally-open and one normally-closed contact (1NO+1NC). It is used in control panels for manual selection of operating modes — start/stop, hand/off/auto, or similar three-state logic — where the cam holds the selected position without spring return.
The selector switch mounts in a standard panel cutout and connects via screw or quick-connect terminals. The 1NO+1NC contact block is suitable for pilot-duty control circuits in motor starters, safety circuits, or mode-selector logic.