2ML7

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Snap action limit switches are devices that contain mechanical linkage which transfer the motion of an object to the operation of limit switches. The most common type of snap action limit switch is the 2ML7, which is used in a variety of applications for sensing the presence or absence of an object.

The 2ML7 is constructed with a pair of electrical contacts and a stationary actuating lever. The lever is connected to a plunger which can be either external or internal. When the plunger is depressed, it triggers the switch and the contacts will change their state from open to closed, or vice versa. This change in state is referred to as a “snap action”, because it happens very quickly. The action can be repeated many times, making these switches highly reliable.

The 2ML7 is used in many applications where accuracy and reliable performance are key. These include process control systems, factory automation, robotics, and even in medical devices. In these applications, the switches are often used to detect the presence or absence of an object, such as a part in a conveyor system, or a person entering a room. When properly installed and maintained, the 2ML7 can provide years of reliable service.

The working principle behind the 2ML7 is fairly simple. The plunger is linked to a metal arm that is connected to the contacts in the switch. When the metal arm is moved, it triggers the contacts and causes them to change their state. This motion can be caused by either mechanical force or electrical force, depending on the application.

In mechanical applications, a lever or other type of moving object is linked to the plunger. When the lever or object is moved, it causes the plunger to depress, triggering the switch and changing the contact’s state. In electrical applications, the switch is activated by the presence or absence of an electrical current. When the current is present, it causes the contacts to close, and when the current is absent, it causes the contacts to open.

Overall, the 2ML7 snap action limit switch is a highly reliable and accurate device that can be used in many different applications. Its quick action and reliable performance make it a popular choice for sensing the presence or absence of an object. With proper care and maintenance, the switch can provide many years of reliable service.

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