91MCE18-S2B

91MCE18-S2B: Application Field and Working Principle

The 91MCE18-S2B snap action, limit switch is a contact device designed for application as a signaling device in automatic assemblies and other control systems. It is built with substances in accordance to IEC/EN 60335 and UL 508 standards, providing reliable performance and long service life.

Application

The 91MCE18-S2B snap action, limit switch has a wide variety of applications including machine conditions, door interlocking, safety circuits in equipment, limit sensing, and alarms. With various contact configurations, Class A, B, and C ratings, and a variety of actuator types, the 91MCE18-S2B offers a reliable and flexible solution for many application requirements.

Working Principle

The 91MCE18-S2B snap action, limit switch operates using a snap-action or “quick make-quick break” mechanism. The plunger of the switch is connected to the actuator, and an internal spring pushes against it. When the actuator is pressed down it compresses the spring, allowing the internal contact to snap shut. When released, the internal contact on the plunger instantly opens, making a loud “click” sound.

The 91MCE18-S2B snap action, limit switch also provides positive action contact operation, meaning that the contact does not depend on the bias of the actuator force to switch states.It also offers dependable self-cleaning contacts, reliable performance over a wide temperature range, and flexible mounting options including surface mount and through-panel.