709150001050006 Connectors, Interconnects

Contacts

Contact switches come in a variety of shapes, sizes, and configurations. In this section, we’ll review their most common features, which are their components and their working principles.

Components

A contact switch typically consists of two contact pieces, one fixed and one moving. Depending on the size and type of the contacts, the number of components in the contact switch may vary. Generally, a contact switch has two contacts, one fixed and one moving. The shape and size of the contacts determine how the contact switch will function.

In addition to the contacts, the contact switch also contains a spring mechanism. The spring helps keep the contacts in place when the contact switch is actuated, providing the necessary tension to keep the contacts in contact even when forces are applied.

Working Principle

The working principle of a contact switch is fairly simple. When the switch is activated, the contacts close, allowing current to flow through the switch. The spring exerts a force on the contacts, keeping them in contact even when force is applied. When the switch is deactivated, the force exerted by the spring is released and the contacts open, breaking the electrical connection.

Spring Loaded and Pressure

Spring-loaded and pressure switches are similar to contact switches, but are often used in situations where a more precise level of control is needed. These switches work by using a tensioned spring mechanism to actuate the contacts when a predetermined force is applied.

Components

Spring-loaded and pressure switches typically contain a spring-loaded plunger that is pressed against a contact plate. When the predetermined force is applied, the plunger is pushed in, allowing current to flow through the contacts. The pressure of the plunger ensures that the contacts stay in contact until the pressure is released.

Working Principle

Spring-loaded and pressure switches work by using the applied force to actuate the contacts. When the predetermined force is applied, the spring-loaded plunger is pushed in, causing the contacts to close. When the force is released, the plunger springs back out, opening the contacts and breaking the electrical connection.