Snap Action, Limit Switches - SS-5-3T application field and working principle

Introduction

In a machine or plant automation system, limit switches are typically used to detect the presence of elements or objects. Specifically, the SS-5-3T is a type of snap-action, limit switch designed to detect and register the presence of an element or object. In this article, we’ll discuss the application fields and working principle of the SS-5-3T.

Application fields

The SS-5-3T is a versatile limit switch well-suited for heavy-duty use in even the most demanding industrial applications. Its diverse range of uses makes it a staple of the modern automation industry.

The SS-5-3T would be an ideal choice for use in metal fabrication and metalworking machines. Its long-life contacts and robust body make it a reliable choice for controlling machine tools such as lathes, milling machines and sheet metal brakes in manufacturing plants.

It can also be used in conveyor systems, particularly those featuring linear or swing movement. With its durable construction, it provides a long-lasting solution for detecting changes in orientation, position and speed of the conveyor belt.

Other applications include elevators, trolleys and palletizers. Its easy installation and high capacity to withstand harsh conditions ensure it can be integrated into almost any industrial environment.

Working principle

The internal mechanism which renders the SS-5-3T a snap-action limit switch is the snap disc. A snap disc is a mechanism that contains an internal spring which, when a specific force is applied, causes it to snap into a predetermined position.

In the case of the SS-5-3T, an object coming into contact with the switch causes the snap disc to actuate and trigger the switch.

The SS-5-3T is equipped with two sets of normally open contacts, which are actuated by the snap disc. When contact is made with the switch, the first set of contacts close, completing an electrical circuit. This will typically be used to transmit a signal, such as a voltage or current, to a programmed device, such as a PLC or robot. The second set of contacts, an auxiliary pair, open at the same time, which can be used to trigger, halt or reverse a process or machine.

Conclusion

The SS-5-3T is a versatile, heavy-duty, snap action, limit switch suitable for a variety of industrial applications. Its two-piece contact system, featuring both normally open and normally closed contacts, allows for greater versatility, allowing it to be used for both activation and deactivation of machines and processes. Additionally, its durable construction ensures that it can handle harsh environments.