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Snap Action, Limit Switches

The snap action limit switch is one of the most reliable type of limit switch. It is used in a variety of applications to control electrical circuits, machines, and more. A snap action limit switch works by using a mechanical spring-loaded mechanism that reacts quickly to a change in its environment. This rapid reaction allows the switch to trip a circuit in order to protect the power source from overload, short circuits, and other electrical hazards.

Snap action limit switches are commonly used in a variety of applications, such as controlling powered gates, agricultural and industrial machines, HVAC systems, security systems, and other electrically powered devices. They are also used in medical equipment. They are known for their quick and reliable response, making them a preferred choice for safety critical applications where a fast reaction time is important.

The main components of a snap action limit switch are the switch body, the contact assembly, and the actuator. The switch body is the outer casing of the switch which contains the electrical contacts. The contact assembly consists of a series of contact points which can be opened or closed when the switch is activated. The actuator is the spring-loaded mechanism within the switch body which physically triggers the switch when a certain set point is reached.

When the snap action limit switch is activated, the spring-loaded actuator causes the contact points to move to their open or closed position. This causes the feed circuit to be interrupted or completed, activating or deactivating the electrical circuit that is being controlled. The travel of the actuator is usually adjustable, allowing for the fine-tuning of the switch\'s response time and sensitivity.

Snap action limit switches are precision devices designed for highly reliable performance and are manufactured from a variety of durable material. Some of the most common materials used in the construction of snap action limit switches include steel, brass, stainless steel, and thermoplastic. Depending on the application and environment, the contact assembly may also be constructed of metals, conductive plastics, or other electrically conductive materials.

Snap action limit switches are available in a variety of configurations, including single pole, double pole, and multiple-pole configurations. Single pole switches are used in applications such as motor starting, while double and multiple-pole switches are commonly used in special applications, such as safety interlocks, to provide redundant safety by using two independent circuits. Additionally, snap action limit switches can be combined with surge protectors and timing devices to further customize their functionality.

Overall, snap action limit switches are one of the most reliable and commonly used switches for a variety of different applications, allowing for safe and reliable control of electrical circuits. They are available in a variety of different configurations and sizes, allowing for the right choice to be made for any application.

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