39SE21

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Snap action, limit switches are mechanical/electrical devices designed to identify the position of a physical element, such as vehicles. The 39SE21 linear limit switch is designed to provide precise measurement accuracy and reliable operation in harsh environments, making it an ideal solution for a wide range of industrial and commercial applications.

The 39SE21 limit switch features a special contact tip that rotates up and down and opens and closes an electrical circuit in response to the externally applied force. The specific contact design and unique ball movement allow it to switch accurately and reliably under even the most extreme conditions, including dust, temperature, and humidity.

The 39SE21’s contact design also allows it to act as both a master and a slave switch, allowing it to be used as a buffer in a variety of processes. Its easy to install design requires minimal maintenance, making it a cost-effective solution. Furthermore, the design is strong and sturdy, allowing it to provide resistance to higher forces such as shock and vibrations.

The 39SE21 limit switch has a number of specific applications in industrial, commercial and automotive applications. In industrial settings, the 39SE21 switch can operate as a safety switch to identify the location of an object in a hazardous area. The switch can be used to identify a choking hazard in an area where an automated workpiece may get stuck. In commercial settings, the switch can be used to identify a person’s body weight or position. This can be especially helpful in stairwells or elevators, giving the operator an accurate reading of the exact floor the person or object is located in. In automotive applications, the 39SE21 may be used as a start-stop-run switch, as well as to identify the position of the vehicle, allowing for precise and reliable operation.

The 39SE21 switch utilizes a unique working principle wherein the contact ball moves in response to an externally applied force. When an object or person applies a downward force on the ball, it pushes the contact tip up against an internal electric contact. This closes the electrical circuit, sending an electrical impulse to identify the position of the object. When the downwards force is removed, the contact tip moves back down, pushing the contact open and thus opening the circuit.

The 39SE21 offers a number of advantages over other limit switches, including its rugged construction and precise contact tip rotation. Furthermore, the contact design allows for higher electrical currents, making it suitable for a variety of tasks. This limit switch is also available in a range of designs and is therefore more flexible than other switches on the market. The 39SE21’s reliable and accurate operation is well-suited for a variety of uses and environments, and its easy-to-install design is beneficial for cost-effective solutions.

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