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Contact switches, spring-loaded contacts, and pressure switches are different types of switches that are used in a variety of applications. Each type of switch has its own unique set of advantages and disadvantages. The following is a brief overview of the types of switches, as well as their application fields and working principles.

Contacts

Contact switches are the most common type of switch. They are characterized by two metal contacts that make contact when they are pressed together. This type of switch is widely used in consumer and industrial applications for control and power circuits. They can be used to control electrical circuits from a few milliamps to several hundred amps. Contacts can also be used in low-voltage applications such as garage doors, thermostats, and lighting controls.

Spring Loaded and Pressure

Spring Loaded and Pressure switches are used for controlling electrical circuits in more specialized applications. These switches are typically used in higher current applications, such as motor and relay control. Spring Loaded switches are activated when a spring inside the switch is compressed, whereas Pressure switches are activated when pressure is applied to the switch. Both types of switches are used in industrial settings to control equipment and machinery.

Working Principles

The working principle of all types of switches is the same: when an external force is applied to the switch, it causes the contact points to make or break the electrical circuit. This is why a “normally open” switch will close the circuit when pressure is applied to it, and a “normally closed” switch will open the circuit when pressure is applied to it. The force required to activate the switch can be adjusted, allowing for different levels of sensitivity. Depending on the type of switch, the amount of force required can be adjusted through a variety of means, such as springs, levers, or buttons.

Application Fields

Contact switches are used in a wide variety of applications, in both consumer and industrial settings. Common uses include controlling home appliances, industrial equipment, lighting, motor control, and automated processes. Pressure and spring-loaded switches are used in more specialized applications, such as motor control, industrial machinery, and robotics.

Overall, contact switches, spring-loaded contacts, and pressure switches are all reliable and versatile solutions for controlling electrical circuits. Each type of switch has its own set of advantages and disadvantages, so it is important to assess your needs and select the right type of switch for your application.