HJ4-L-AC48V-6

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Power Relays, Over 2 Amps: HJ4-L-AC48V-6 application field and working principle

Relays are electrical devices used in various machines and electronics to switch electrical circuits. The HJ4-L-AC48V-6 relay is a low power, multi-purpose relay designed for use in audible and visible alarm systems, power supply back-up and other general switching applications with a maximum contact current of 6A. This article will discuss the application field and working principles of the HJ4-L-AC48V-6 relay.

Application field

The HJ4-L-AC48V-6 relay is a multi-purpose relay designed for use in a diverse range of applications, where a reliable switching action is needed in a variety of circuit designs. Firstly, this relay is especially suitable for use in alarm systems, providing a secure and reliable switching between the power source and the alarm sounder. Secondly, it is suitable for use in automatic power supply back-up systems, providing secure switching between primary and secondary power sources. It is also suitable for general switching applications, such as switching on and off electric motors. Finally, this relay can also be used in the control of air-conditioning and heating systems in homes and office buildings.

Working principle

The HJ4-L-AC48V-6 relay relies on a coil that, when energized, attracts an armature that completes the circuit. Upon de-energizing, the armature is released and the circuit is broken. This relay has a maximum contact current of 6A and is rated for 24Vdc. The relay has a single pole double throw (SPDT) contact configuration, which is used to control multiple circuits. This contact configuration ensures that the current flows in only one direction and that the desired function is performed.

The relay also features a manual reset button which can be used to reset the relay after it has been energized and de-energized. This feature is useful in situations when the relay has been accidentally tripped, allowing it to be reset without having to manually de-energize the coil. In addition, the relay is equipped with a diode which prevents reverse polarity of the coil voltage.

The HJ4-L-AC48V-6 relay also incorporates latching capability, which allows the relay to be switched on or off without the need for continuous energization of the coil. This feature is useful in applications that require the relay to remain in its switched position even after the powering source is removed. This feature is also energy efficient, as it eliminates the need for continuous powering of the coil.

In summary, the HJ4-L-AC48V-6 relay is a reliable and versatile relay, suitable for use in a variety of applications. It is designed to provide reliable switching action between power sources and other circuits and is also equipped with a manual reset button and latching capability. By understanding the application field and working principle of the HJ4-L-AC48V-6 relay, engineers can effectively select and use this relay in their designs.

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