1478611-4

Snap action, limit switches, such as the 1478611-4 series, are electromechanical devices designed to detect a physical position of objects and break or establish an electrical circuit when a certain point, or limit, is reached. Although these switches have a vast array of possible use cases, the 1478611-4 is specifically designed for applications in which absolutely precise position measurements are not required, but rather a safe way of detecting the nearest position of an object, in facilities that range from factories, to water parks and anywhere in-between.

In most 1478611-4 models, a slide lever moves within a mechanical body. The body itself contains the switch contacts, the lever release elements and the lever operating elements. Whenever a limit is reached, the lever is urged to snap into position, either releasing or activating a set of electrical contacts. This action is sometimes known as snap action and it is one of the reasons why limit switches are so accurate and can handle pressures or stresses unlike any other system.

The 1478611-4 is designed for snap action, with the switch itself made from high quality materials like stainless steel, brass and polyacetal, granting it a certain degree of protection from outside influences like wind, dust and water. These tough materials make this type of limit switch ideal for toughest of applications, withstanding vibration and extreme temperatures and humid conditions.

What truly sets the 1478611-4 apart from other limit switches, however, is its ability to detect the opposite direction limit automatically as it moves to the opposite side of the limit. This is aided by the use of two levers that are kept in position by a spring. When the object passes the limit set and the pressure exerted reaches the specific triggering point, the spring gives way and the lever snaps back into position, reversing the circuit.

Most 1478611-4 models employ the most common switching control, which is a SPDT (Single Pole Double Throw) system. This type of switch uses two circuits and provides two outputs to the user. It is able to maintain the power demands, making it ideal for all sorts of industrial applications, as well as recreational and medical applications as well.

The 1478611-4 is a highly reliable and versatile limit switch, with a robust construction accurate operation and wide range of applications. Maintenance of the unit is relatively simple and can be done with the help of a few tools. This makes it a great choice for any application that needs the accurate limit detection capabilities provided by the 1478611-4.