622EN71

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Snap action, limit switches are electromechanical devices designed to detect the presence or absence of an object, or the opening and closing of a circuit. The 622EN71 is an example of these types of switches. This particular switch is specifically engineered to meet UL and CSA requirements for use in hazardous locations.

The 622EN71 can be configured with two independent moments of action - slow and fast - depending on the user\'s needs. The slow moment of action has a reset time of around 1 second. This gives the switch time to accurately respond to even very small changes in the current or position within the circuit. The fast moment of action responds within just a tenth of a second, which is critical for snap action, limit switches that must respond quickly to an action or event for safety reasons.

The 622EN71 also includes a removable front cover, making it easy to access the switch internals. This is a key safety feature that allows the user to safely access the switch, while still maintaining its UL listing. The switch can also be securely mounted and connected to a power source, as well as to equipment or other control components.

The 622EN71\'s applications and capabilities make it an ideal choice for a variety of applications. It can be used in industrial, commercial, residential and hazardous locations. It is capable of operating in temperatures ranging from -20°C to +100°C, and pressures up to 200Bar. Additionally, this switch has a sensing range of 3.2mm, making it perfect for environments with limited space.

The working principle of the 622EN71 is based on a combination of electrical and mechanical elements. An electrical input is sent through a pair of contacts, located on a plunger. The plunger is spring-loaded and only closes when the input is applied. When the plunger is activated, it sends a signal to the electrical control circuit, signaling that the action or event has occurred. The plunger remains closed until the input is removed, at which point the spring will reset, sending a different signal to the control circuit and releasing the plunger.

The 622EN71 is an excellent choice for a wide range of applications, providing a secure connection and accurate responses to even very small changes. Its combination of electrical and mechanical components ensure that it is capable of operating in a variety of environmental conditions, and its removable front cover provides quick and easy access to the switch internals. Furthermore, its spring-loaded plunger ensures a snap action response, which is critical for switches used in hazardous locations.

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