D4F-402-5R

The D4F-402-5R snap action, limit switch belongs to a family of switches designed to detect the presence of objects by mechanical means, as opposed to other forms of detection. These switches are used to perform functions such as: controlling the operation of AC and DC motor drives; providing over-temperature control; activating power and control circuits; and regulating the resistance of a circuit. The D4F-402-5R switch is designed to provide long life and reliable performance, making it suitable for a wide range of applications.

Application Field

The D4F-402-5R snap action, limit switch is designed to meet the needs of various industries, including automotive, construction, electrical, HVAC, industrial, medical, and security. In the automotive industry, it can be used in automatic window raise/lower systems and door lock/release systems. In the construction industry, it can be used for building control, as well as for access control, door closure, and door locking. In the electrical industry, it can be used for controlling, limiting, and positioning motor drives.

In the HVAC industry, the D4F-402-5R switch can be used to control dampers, blowers, and louvers for ventilation and air conditioning systems. In the industrial sector, it can be used for controlling machine tools, hoists, and robots. It is suitable for medical equipment such as hospital beds and scrubbing machines. In the security industry, it can be used to control security access, intrusion detection, and fire protection.

Working Principle

The D4F-402-5R snap action, limit switch is designed to operate using a two-stage mechanism. In the first stage, the switch actuator is moved by an external force to its position of rest. This causes spring-loaded contacts to close and establish an electrical connection. In the second stage, the external force is removed, causing the contacts to move quickly and open up the electrical connection. The speed of the contact movement and the resulting electrical connection or disconnection is designed to be snap-action, allowing equipment to react quickly to changes in the environment.

The D4F-402-5R switch is designed to operate under extreme temperatures, moisture, and dust conditions. Its dielectric strength and insulation resistance exceed the requirements of international safety regulations. Its actuation force, travel, and release force are designed to ensure reliable and accurate operation. This switch is also designed to ensure a long service life, with very low contact-voltage drop and minimal electrical movement or bounce.

The D4F-402-5R snap action, limit switch is designed to meet the stringent requirements of modern industries. Its versatile and reliable design makes it an ideal choice for a wide range of applications, from automotive and construction to electrical and HVAC systems. With its robust design, it is capable of providing reliable switch operation in the most demanding of environments.