Limit Switches

What is a Limit Switch?

A limit switch is an electromechanical device used to detect the presence or absence of an object or to monitor the position of a moving part. It is typically used in environments that demand mechanical strength or environmental resistance, where normal basic switches cannot be used.

How Does a Limit Switch Work?

A limit switch works by physically contacting the object or part and activating a switch mechanism when a certain limit or threshold is reached. This triggers an electrical signal, indicating that a predetermined limit has been achieved.

What is the Electrical Symbol For Limit Switch?

The limit switch electrical symbol is a graphical representation of the device, providing a simple yet effective visual indication of the switch’s position in a circuit without the need for a physical inspection.

What Are the Types of Limit Switch Symbols?

Here are the two main types of limit switch symbols:

Normally Open Limit Switch Symbol

A normally open (NO) limit switch has its contacts open in the default, non-activated state. When the switch is triggered by an external force, the contacts close, completing the circuit.

Normally Closed Limit Switch Symbol

A normally closed (NC) limit switch has its contacts closed in the default, non-activated state. When the switch is triggered by an external force, the contacts open, completing the circuit.

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