A0109Y Switch Body, IP65, Momentary for use with A01 Series -20?C +55?C. Round, square and rectangular operators can be fitted to single, double, three and four pole switch blocks for a variety of applications. A complete Pushbutton switch assembly requires an operator, switch block, lens and lamp (if illuminated). Keylock and Rotary switches require an operator and switch block, while the Emergency Stop switch comes as a complete assembly supplied with a double pole N/C switch block and a yellow self adhesive label.