D40ML-P2-U-M12

Introduction to Snap Action, Limit Switches

When it comes to industrial machines, there are some key components that serve many purposes. One important component is the snap action limit switch. By understanding more about this important component and its features, it can help determine the best way to ensure the smooth operation of these machines.

What is a Snap Action Limit Switch?

A snap action limit switch is an electrical switching device that is designed to open and close when certain mechanical parameters are met. Its primary use is to indicate the position of a machine element, such as a plunger, piston, or valve. It is also used to create a limit or to detect whether a machine is positioned correctly. This sets the limit on the movement of the machine.

Snap action limit switches are often found in different kinds of industrial machinery, such as packaging systems, assembly or conveyor systems, printing presses, automated production lines, industrial sensors, electronic motor control systems, and cranes. They are also used in the aerospace and defence industries.

How do Snap Action Limit Switches Work?

At the heart of a snap action limit switch is a pin that is made of metal or plastic, and this pin is set up to react to mechanical or thermal expansion when it comes into contact with an object. This will cause the pin to move from one side to the other, responsive to the force that is applied to it. This movement causes the contacts to switch on or off.

D40ML-P2-U-M12 Application Field and Working Principle

The Omron D40ML-P2-U-M12 is a snap action, limit switch. It consists of a plunger and a contact mechanism, and responds to an external object - by movement along the plunger axis - to mechanically switch electrical circuits on and off. This type of switch is one of the most popular models for industrial applications, including for use in packing systems, assembly lines, and conveying systems.

The D40ML-P2-U-M12 has a four-pole construction, and requires a DC voltage of 24V. The switch has a rated current of 16A and a rated power of 400V. It also has a mechanical life of 5 million operations and a temperature range of -20°C to +80°C. It is designed for a screw or soldered connection, and features a two-step dielectric strength of 2000V AC/V DC.