LSU9A

Snap Action, Limit Switches

The LSU9A is a snap action limit switch commonly used in industrial applications. It provides a reliable and consistent means of controlling the movement and positioning of parts or machinery. The LSU9A is designed to switch and stop an electrical circuit as it reaches a predetermined limit. It is typically used for safety purposes, for monitoring the movement of a machine or for actuating a line. The switch offers a durable and durable design with the ability to operate under extreme conditions.

LSU9A Design and Functionalities

The LSU9A consists of a contact block that contains a stationary and movable contact. The stationary contact is attached to the contact block and the movable contact is attached to the actuator. The actuator is driven by a coil spring that is connected to the contact arm. The contact arm carries the movable contact that, when in contact with the stationary contact, closes the circuit. The operation of the contacts is achieved through a mechanical linkage and the contacts are biased to their open position when the contacts are opened and the circuit is broken, the spring loaded plunger stays in the contact block.

LSU9A Application Field

The LSU9A has versatile application fields including: HVAC systems, industrial automation, elevator and escalator controls, hoist and crane controls, process control and motor start/stop circuit applications. It is also used for actuation and position sensing applications in automotive and manufacturing applications. The switch can be used in applications where high reliability and precision accuracy are required, particularly in safety applications where it is important to minimize failure modes. The switch is available in a variety of configurations, including momentary and continuous action, multi-pole and high temperature models. It is also available with a wide range of actuator sizes providing flexibility for customizations.

LSU9A Working Principle

The working principle of the LSU9A is simple. When the actuator arm is pulled against the contact arm, the spring is forced to compress. This allows the movable contact to move and come into contact with the stationary contact. When the contacts come into contact, the circuit is closed and the circuit is complete. Once the contacts are open, the spring will retract, allowing the arm and movable contact to move away from the stationary contact and open the circuit.

The switch is designed to operate extremely reliably over a wide temperature range and provide high levels of accuracy. It can also be used in harsh environments and is available in a variety of materials, such as stainless steel and PVC. The switch can be operated manually or by a device or motor depending on the application.

Conclusion

The LSU9A is a reliable and effective snap action limit switch used in a wide variety of applications. It is designed to provide reliable circuit closure and interruption and is available in a variety of configurations. Its robust construction and long-term reliability make it ideal for safety and precision monitoring applications.