Toggle switch - A toggle switch is a class of electrical switches that are actuated by a mechanical lever, handle, or rocking mechanism. The word "toggle" is a reference to a kind of mechanism or joint consisting of two arms, which are almost in line with each other, connected with an elbow-like pivot. In the phrase "toggle switch" it specifically refers to one kind of mechanism that can be used to implement a positive "snap-action." However, the word "toggle switch" has come to mean any kind of switch with a short handle and a positive snap-action, whether it actually contains a toggle mechanism or not.

Clearances - through-air spacing.

Creepage distances (creepage) - over-surface spacings.

Door Switch -a single-pole, momentary contact switch with a push-button actuator, provided with an outlet-box and cover. It is intended for installation in door jambs to control lighting fixtures, typically in a closet.

Fixture switch - a switch installed in the enclosure of a fixture such as a luminaire, a fan or the like.

Pendant switch - a switch intended to be installed at the end of a flexible cord for use in branch-circuit pendant applications.

Self-contained switch - a switch intended for flush mounting without a separate outlet box for

connection to one or more nonmetallic sheathed cables containing copper conductors.

Surface switch - a switch provided with a separable base and cover primarily intended for branch circuit installation on exposed wiring consisting of open wiring on insulators or nonmetallic sheathed cable.

Terminal, insulation displacement - a terminal having a contacting member that forces the conductor insulation aside and presses against the side of the conductor to make contact.

Terminal, pin-type - a terminal having a contact pin that punctures the conductor insulation to contact the current-carrying conductor.

Terminal, pressure-wire - a terminal where the conductor is clamped under a pressure plate or saddle by one or more screws or nuts.

Terminal, push-in - a terminal where the stripped end of a conductor is pushed into the terminal and the clamping pressure is maintained by a spring mechanism, without the use of screws.

Terminal, set-screw -a terminal where the clamping pressure is applied by the end of the screw

bearing directly on the conductor.

Terminal, wire-binding screw - a terminal in which the conductor is bent around the screw and is clamped directly under the head of the screw when it is tightened.

Through-cord switch - a switch intended to be installed along the length of flexible cord such as for use in power-supply cords or cord sets.