OP-AR

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The OP-AR application field and working principle can be classified into two categories: Snap Action and Limit Switches. Each of these categories performs a different type of operation and works differently.

Snap Action

Snap Action switches are designed with a plunger that, when actuated, activates a coil spring. This switch type is commonly used for low-power applications and is often referred to as a “push button”. To actuate the switch, one must press down on the plunger, which in turn causes the coil spring to quickly snap back and make contact with the switch’s terminals. Therefore, when this type of switch is actuated, it is a brief, but decisive, operation. These switches usually come in one of three style designs: standard, dust-tight or dustproof.

Limit Switches

Unlike Snap Action switches, Limit Switches operate on a different electrical principle. Limit Switches are designed with a trigger or actuator which, when actuated, causes the movable contact arm to make contact with the stationary contact arm. This contact arm isn’t fixed, as it usually has a magnet inside that can be positioned in different locations, allowing the switch to have various trip points. The main actuating force on a Limit Switch is usually gravity or mechanical action, however these devices can also be actuated by electrical energy, air pressure, or any type of motion.

When a Limit Switch is actuated, the contacts will remain engaged with each other. Unlike a Snap Action switch, where the contacts are momentarily engaged, Limit Switches are designed for continuous operation. The type of contact system used in a Limit Switch will depend on the specific application.

Overall, Snap Action switches and Limit Switches perform very different functions and operate differently. The basic application and working principles are easily distinguishable and should be carefully considered when selecting the appropriate switch type for a specific application.

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