21EN239-R1

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The 21EN239-R1 is a snap action, limit switch that finds applications in a wide range of electronic and electrical projects. It is widely used in industrial, consumer and automotive applications, and is available in a variety of wailing configurations for different applications. The 21EN239-R1 is a momentary, normally open SPST switch with a 14 mm mounting thread and a contact rating of 10A 250VAC. It is suitable for a wide range of applications, including motor control, domestic appliances, automatic doors, lighting, textiles machines, security systems and power tools.

The working principle of the 21EN239-R1 is based on a lever or beam mechanism that is triggered when it is pushed, pulled or rotated. This movement is then converted into an electrical signal. The switch is designed to control the flow of energy in the form of an electrical current by switching contacts on and off, or by isolating the circuit. It has two main functions, one acting as a limit switch and another one acting as a manual switch. This helps to limit the position of something or to control the motion of a machine.

The 21EN239-R1 is made from a die-cast zinc alloy body with an internal, sealed, longitudinal actuator arm. The base of the unit contains a black plastic cover to protect the components from dust and water. The top of the switch has two metal contacts which accept wires from the circuit. The contacts are normally open, meaning the switch is off without any input. When a force is applied to the actuator arm, it pivots and pushes against the contacts, closing them and allowing current to flow. When the force is removed, the switch reverts to its open state.

The limit switch is designed to be wired into two separate circuits. The first circuit is a control circuit which is used to determine when the switch is activated and when it is deactivated. This is usually triggered by a manual action or an external sensor. The second circuit is the load circuit which is used to control the power to the device that is being controlled by the switch.

The 21EN239-R1 is designed to be used in harsh environments, with an operating temperature range between -25°C and +60°C, and a vibration range of 0.75mm/S2 for 3000 cycles. It has a dielectric strength of 2kVAC and insulation resistance of 500mΩ 500M at 500VDC. The switch has a long life expectancy of up to 500,000 operations.

The 21EN239-R1 is an excellent choice for any application requiring a reliable, long-lasting and durable switch. Its versatility and simple operation make it ideal for a wide range of uses, and its robust construction ensures it can withstand many years of use in demanding environments.

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