Abstract: A rotary key switch has a momentary action such that a lock cylinder and control member are returned to normal positions by a torsion spring provided in a central bore of the control member. The switch housing is in two parts, a lower body portion and an upper panel mounted cap portion that also supports the lock cylinder. The lower portion defines a cylindrical cavity and supports the control member on a central post that is also provided in this central bore. The housing portions are telescopically secured to one another and a stop is deformed in part by the control member and the panel mounted cap portion to positively limit the rotation of the key and lock cylinder.

Abstract: A snap-on actuator for use with a miniature switch of the type usually fitted with a toggle. The toggle is shortened and has a slot for receiving a C-shaped retainer. The retainer holds the actuator on the toggle and prevents the toggle from being moved inwardly of the switch case as a result of downward force on the actuator.