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A contact with a small roller or plunger drawn on its actuator.
Also known as: Position switch, Travel limit switch, Microswitch, Contact with a roller
A limit switch is operated by a machine reaching a position rather than by a person, and the small roller or lever drawn on its actuator says which kind of physical contact triggers it. It is the standard end-of-travel stop in industrial machinery.
Denotes a switch actuated by the physical movement of a machine part reaching a defined position.
Contexts: Electrical equipment
Carries an actuator glyph — roller, lever, plunger or whisker — indicating how the machine engages it.
Contexts: Electrical equipment
Is used as an end-of-travel interlock, where it must be classified as a safety component to be relied on for guarding.
Contexts: Electrical equipment
A contact blade with a short angled arm at its pivot end terminating in a small circle representing a roller.