The EAO 45-280S.4D50.003 switch actuator is a 3-position, green, flush-mounting, momentary-off-momentary switch with a 45mm long lever and a front metal construction. It is used for a variety of electrical applications, including power and lighting control, HVAC control, vehicular controls, and industrial control. The actuator allows the user to manually select between three different configurations of the electrical circuit. It features a preloaded detent mechanism with a non-corrosive detent spring for positive and reliable stop locations, as well as a front-shaped dome for visibility and to reduce inadvertent actuation.