31EN78-6

Snap action limit switches are used in a variety of applications, including tracking the motion of an elevator, monitoring the opening and closing of doors, and controlling the speed of motors. The 31EN78-6 snap action limit switch is a single-pole, double-throw switch with a long service life, high shock and vibration resistance, and IP67 protection rating. When powered, the switch opens and closes rapidly, providing accurate and reliable operation.

Construction of the 31EN78-6

The 31EN78-6 switch is constructed of die cast aluminum entire body, with a polyamide actuating star, dust boots, and a removable chromium-plated brass button element. The polyamide actuating star is designed to absorb impacts and is molded, meaning it requires no machining, ensuring exceptional precision and repeatability. The housing of the switch is designed with a 9 mm diameter thread at the bottom, allowing it to be easily mounted to any flat surface.

Working Principle

The switch works by detecting the turning motion of an actuating element, such as a cam, lever, or roller, when it reaches a certain point in its rotation. As the element turns it contacts the switch, causing it to open and close rapidly. The contact state of the switch is maintained by the mechanical characteristics of the contact elements, which ensure that the switch remains in the same position even after it is released.

The 31EN78-6 is designed for long-lasting and reliable performance in extreme environments. The contact elements are hermetically sealed to prevent dust and dirt from entering and damaging the switch, and the entire switch is IP67-rated for excellent protection from liquids and dust. The switch is also designed to withstand shocks and vibrations, ensuring lasting performance in applications that involve frequent movement.

Applications

The 31EN78-6 snap action limit switch is designed for a wide variety of applications. It is ideal for monitoring and controlling the motion of doors and windows, monitoring the current speed and position of motors, controlling the movement of elevators and other machinery, and many other applications where precise control of a mechanism is required. The switch also has a long service life, meaning it requires minimal maintenance and can provide reliable operation for years.