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Snap Action, Limit Switches

A snap action, limit switch is an electrical device used to control the operation of a machine or system. It is typically a mechanical component that triggers a reaction when tripped. When the switch is tripped, it can be used to control the operation of an element of a machine, activate a warning light, or anything with an electrical connection.

A typical limit switch will consist of two parts: the actuator arm and the contact blocks. The actuator arm is the component which trips the switch when pressure is applied. This is usually a lever, or a paddle, or in some cases a plunger. When the switch is closed, the contact blocks allow current to flow between its terminals.

The most common types of snap action, limit switches are NO (normally open) and NC (normally closed). A NO switch is made up of two contact blocks – one which is closed and one which opens when the actuator arm is tripped. When the arm is pulled, electricity can flow between the contact blocks. By contrast, a NC switch is made up of two contact blocks – one which is open and one which closes when the actuator arm is tripped. When the arm is pushed, the contact blocks allow electricity to flow between its terminals.

The working principle of a limit switch is based on the physical principle that when an object changes its position, it creates a reaction that changes the electrical state of the switch. When the actuator arm is pushed or pulled, it moves a magnet inside the switch, which causes the contact blocks to come into contact and thus changes the electrical state of the switch.

Limit switches can be used in many applications, such as controlling the activation and deactivation of machinery and devices, monitoring potential danger situations, turning on and off lights and appliances, controlling the speed of motors, automated safety systems, and more. Because of the reliable and cost-effective nature of limit switches, they have become a popular choice for industrial, commercial and residential applications.

In summary, a snap action, limit switch is a simple and cost-effective device which can be used to control the operation of systems, machines and devices. A typical limit switch consists of two parts – the actuator arm and the contact blocks. There are two types of limit switch – normally open and normally closed. The working principle of limit switches is based on the physical principle that when an object changes its position, it creates a reaction that changes the electrical state of the switch. Limit switches can be used in many applications, such as controlling the activation and deactivation of machinery and devices, monitoring potential danger situations, turning on and off lights and appliances, controlling the speed of motors, automated safety systems, and more.

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