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Snap Action, Limit Switches

The D3V-16G443-1C25-K snap action limit switch is an electric switch used in many industrial and household applications. It is designed to accurately detect the presence of an object, such as a lever, as it approaches a defined point in space. When the object’s contact with the switch contacts the defined point, the switch’s fixed points are released and a signal (usually electrical) is sent, completing the circuit until the lever is removed and the switch returns to its original position.

Application Field

The D3V-16G443-1C25-K can be used in a wide range of applications. Some examples are: industrial machinery, home appliances, access control systems, HVAC systems, laboratory equipment, etc. This limit switch is ideal for locations in which exact positioning of the contacts is required for precise detection, such as for conveyor belts and other automated machinery.

Working Principle

The D3V-16G443-1C25-K utilizes a snap action design that combines the contact points between a wire form and a roller arm. The wire form is held in place by two spring-loaded detent mechanisms that apply pressure when the arm approaches the contact. The contained force of the springs combined with the precision manufacturing of the wire form and the adjacent arm combine to create a superior limit switch with repeatable accuracy and reliable performance.

When a lever or other object approaches one of the setpoints, the roller arm causes the wire form to deform slightly. This deformation releases the spring-loaded detents, allowing the arm to move past the switch’s contact points. This triggers the switch’s electrical circuit and the switch remains in this state until the lever is removed.

Maintenance

The D3V-16G443-1C25-K requires minimal maintenance. The contacts should be regularly inspected for signs of wear or damage. If damage is detected, the switch should be replaced. The switch should also be periodically tested to ensure that it is functioning properly.

The switch should also be periodically lubricated with a high-grade oil or lubricant. This will help prevent corrosion and help ensure that the switch continues to operate properly.

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