91MCE29-P1

91MCE29-P1 - Snap Action, Limit Switches

Application Field

The 91MCE29-P1 snap action, limit switch is designed for use in industrial environments, providing a low cost solution for safety switch applications in which general purpose switching and basic dust and water resistance are required. Typical applications include motor starters, overload relays, programmable logic controllers, and control systems.

Working Principle

The 91MCE29-P1 works on the principle of internal pressure. The switch contains a housing filled with a high-pressure dielectric fluid. When the sealed switch is activated, the pressure within the housing changes, and this pressure change causes the internal switch contacts to close or open. As the pressure within the housing is changed again, the switch contacts open or close as appropriate. This principle is often referred to as snap action.

In operation, a normally closed or normally open arrangement of contacts is typically used. When the pressure inside the housing rises above a certain threshold level, the normally closed contacts open and the normally open contacts close. When the pressure drops below the threshold, the contacts resume their original positions. The pressure threshold can be adjusted by changing the internal pressure within the switch.

Advantages of Snap Action, Limit Switches

Snap action, limit switches offer several benefits, including:

• Reliable operation with minimal maintenance
• Highly accurate switching, with no drift or lag in response
• Excellent shock and vibration resistance
• Ability to withstand high temperatures
• Low cost compared to other types of switches
• Availability in a wide range of styles and sizes

The 91MCE29-P1 is an example of a snap action, limit switch that has been designed with these features in mind and is suitable for use in a variety of applications. It is a low cost, reliable solution that is well-suited to industrial and safety applications.