83268631

Snap Action, Limit Switches – 83268631

Snap action, limit switches are devices used to detect the presence, absence, or position of an object or person. They are used to detect and limit the motion of machinery and other mechanical and electrical components. Snap action, limit switches have a variety of uses, including: controlling elevators, controlling the opening and closing of windows and doors, controlling the start and stop of conveyors and other production machinery, and detecting presence or absence of objects from a signal device.

Snap action limit switches are available in contact type and non-contact type models. Contact types, such as plunger limit switches and rocker arm limit switches, function by physically activating a microswitch whenever a mechanical limit is reached. Non-contact types, such as proximity sensors and reed switches, work by switching a circuit in response to an electrical or magnetic field.

Application Fields

Snap action, limit switches are popularly used in the machine industry, automation, automotive manufacturing, and the medical industry. In general, they are typically used to detect motion, position, or temperature, pressure or other events in machines, control systems, and electronic circuits. They are commonly used in many machine tools and industrial automation systems, such as CNC machines, packaging machines, and production lines. These switches can be easily integrated as integral components in many applications.

Snap action limit switches are also popularly used in automotive turn-signal systems, door locks, smokestacks and chimneys in coal-burning systems, emergency stop systems and packaging machines. These switches can be used to detect objects, limit travel, and monitor over-Speeds.

Working Principle

Snap action limit switches are designed as a single-pole, single-throw lever switch. When pressure is applied to the switch, it will snap from one lever position to another pre-defined position. The amount of pressure required to switch the switch from its normal state to its spring loaded position is referred to as the actuation force. The actuation force is determined by the amount of force required to compress the spring or expand the spring at the core of the switch. The actuation force will vary depending on the switch type and size.

Depending on the type of snap action limit switch, the switch will either open or close the circuit when the actuation force is met. Once actuated, the switch will be held in its position until the applied pressure on the switch is released. These switches use a spring-loaded mechanism to ensure that they stay in place and operate reliably, even when subjected to extreme temperatures, vibrations and shocks.

Snap action, limit switches are mechanical devices that are very reliable and can be used in many different applications. They are easy to install and require minimal maintenance and servicing. In addition, these switches are typically designed with robust housings and waterproof seals, allowing them to be used in harsh environments.