21EN51-R3

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Snap Action, Limit Switches

Snap action, limit switches are devices that are used to provide an automatic action that responds to an object upon contact. 21EN51-R3 is one of such devices. It is a 3-pole, single-break, 30A auxiliary switch with extra-long operating range. Below is a description of the application fields and operating principle of the 21EN51-R3.

Application Fields

The 21EN51-R3 is suitable for a wide range of applications, e.g. motorized operation of gates, industrial doors and barrier control, machine tools and car parks control, ventilation and operation of electrical machinery, etc. This snap action, limit switch is also one of the most reliable and economical solutions for the control of electrical equipment. It is robust and durable enough to be used in harsh operating conditions.

Operating Principle

This snap action, limit switch operates by means of a flexible internal membrane. When an object comes into contact with the switch, the switch senses the contact and an internal electrical circuit is closed. The internal spring provided helps overcome any movements or vibrations that may be present in the external environment ensuring stable operation. This provides reliable and accurate operation of the switch.

The 21EN51-R3 snap action, limit switch is designed to be used in a variety of different applications. Its long operating range, durable construction and flexible internal membrane make it an ideal choice for a wide range of applications. By providing a reliable and accurate response to objects upon contact, the 21EN51-R3 ensures reliable and accurate operation of electrical equipment. For this reason, it is highly appreciated by users in various industries.

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