KRPA-11DY-24 Relays

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Power relays are devices used to switch power on and off to electrical components such as motors, lights, and heater elements. The KRPA-11DY-24 is a type of power relay with a current rating of over 2 amps. This article will discuss the application field and working principle of this relay.

Application Field

The KRPA-11DY-24 relay can be used for a wide range of applications such as air conditioners, refrigerators, washing machines, photocopiers, power-distribution systems, and vending machines. This type of relay has a wide operating voltage range of 175 to 265VAC and can control power efficiently in these various applications. It is suitable for use in locations with limited space due to its compact size and its ability to switch up to 10A while consuming only 10W of power.

The KRPA-11DY-24 relay has a high tolerance to humidity and is resistant to environmental extremes; it is able to operate in temperatures ranging from -20°C to 70°C, making it a perfect choice when operating in both hot and cold environments. It is also UL and CSA approved ensuring safe and reliable operation.

Working Principle

The KRPA-11DY-24 relay is an electro-mechanical device made up of two components: a solenoid and a contactor. The solenoid is a coil wound around a metal core that produces a magnetic field when a current flows through it. When current is applied to the solenoid, a force is exerted on the contactor, activating it and allowing current to pass through to the electrical component that the relay is controlling.

The contactor is a metal switch consisting of two or more pieces of metal that remain open until a force is applied to close them. In a KRPA-11DY-24 relay, when the solenoid is energized, current flows through the coil and activates the contactor, allowing current to flow to the device the relay is connected to. Once the solenoid is de-energized the contactor is released and stops the flow of current.

The KRPA-11DY-24 relay is equipped with a varistor that monitors the voltage applied to the solenoid coil. If the voltage exceeds 265VAC, the varistor reduces the voltage to protect the contactor. This relay also has a delay-off feature for protecting the load from inrush current and preventing false triggering in applications.

Conclusion

The KRPA-11DY-24 power relay is a reliable and efficient device for switching power in a wide range of applications. With its wide operating voltage range, high temperature tolerance, and overload protection, this relay is the perfect choice for locations with limited space and in extreme environmental conditions. Its solenoid and contactor mechanism allow it to safely and reliably switch current up to 10A while consuming only 10W of power.

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