| Allicdata Part #: | 21EN359-ND |
| Manufacturer Part#: |
21EN359 |
| Price: | $ 0.00 |
| Product Category: | Switches |
| Manufacturer: | Honeywell Sensing and Productivity Solutions |
| Short Description: | ENVIRONMENTALLY SEALED LIMIT SW |
| More Detail: | N/A |
| DataSheet: |  21EN359 Datasheet/PDF |
| Quantity: | 1000 |
| 1 +: | 0.00000 |
Specifications
| Series: | * |
| Part Status: | Obsolete |
Description
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Snap action, limit switches are used in a variety of application fields due to their precise sensing and relaying capabilities. 21EN359 is a specific type of limit switch manufactured by the Italian company Schneider Electric. Its distinguishing feature is its ability to be used in hazardous environments, such as those resulting from the presence of potentially flammable gases or dust. This article examines the principles of operation and applications for the 21EN359.
The Physical Aspect
The 21EN359 is a standard limit switch. It is composed of a main body, a lever, a stationary contact terminal, and a moving contact terminal. The lever is connected to the main body via a pin and is typically used to activate the switch. The stationary contact terminal is connected to a fixed position while the mobile contact terminal is connected to the lever and spring that allow the lever to move when pressure is applied on an external force. The movement of the lever when the pressure is applied, causes the contact terminals to open or close, thus allowing the switch to control the flow of electricity in a circuit.The 21EN359 is classified as being explosion-proof, meaning that it can safely be used in environments containing volatile gases or dust. Further, it can withstand temperatures ranging from -20 °C to +80 °C and is IP66 rated, making it dust and waterproof.Working Principle
As previously noted, the 21EN359 is a limit switch. When pressure is applied to an external force, the lever attached to it is moved. This movement causes the contact terminals within the switch to open or close. An open circuit usually results when no pressure is applied, or when the pressure is removed from an applied external force. When the circuit is open, electricity cannot flow through it, and the switch does not transfer power. Conversely, when the pressure is applied and the switch is in the closed circuit position, electrical power can travel through the circuit.Applications
The 21EN359 is typically used in hazardous environment applications. It has found use in a variety of industries, such as oil and gas, marine, chemical and food processing, and automotive.In the oil and gas industry, the 21EN359 limit switch is often used to detect gas leaks and monitor pipeline operations. In marine applications, the switch is employed to monitor engine and system operations. In the chemical and food processing industries, the switch is often used to control valves, ensuring dangerous gases are handled safely. In automotive applications, the 21EN359 is typically used to detect engine faults and to control the flow of fuel.Conclusion
The 21EN359 is a limit switch designed for use in hazardous environments. It is composed of a main body, a lever, a stationary contact terminal, and a moving contact terminal. When pressure is applied to an external force, the lever moves, causing the contact terminals to open or close. This switch has found use in a variety of industrial settings, from oil and gas to marine and automotive.The specific data is subject to PDF, and the above content is for reference
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