HJ4-AC100V

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Power relays are electrical components used to control a large amount of electrical power. They work by providing an isolated path between a high voltage or current source and a low voltage or current source, with the added benefit of being able to switch with only a small amount of current. The HJ4-AC100V is an example of such a power relay, and is used for applications that require transferring power over 2 amps. This relay is a compact and lightweight alternative to bulky and power-hungry industrial relays. This article will discuss the application field and working principle of the HJ4-AC100V.

Application Field and Working Principle

The application field of the HJ4-AC100V power relay is for the transfer of power over 2 amps, including applications such as inverters, motor control systems, and power systems. The power rating of the relay is up to 50 W (3A-30VAC/DC) for AC and 18 W (2A-50VDC) for DC. Its resistance to voltage spikes and current surges make it suitable for many industrial and commercial applications.

The working principle of the relay is based on its latching design, which involves a magnet working in conjunction with a coil to control the switching of the relay. When a low-voltage current is applied to the coil, the magnet pulls the armature, which then engages the contacts of the relay, thus connecting the two circuits and completing the power transfer. The HJ4-AC100V relay is unique in that it incorporates both an AC and a DC side, thus allowing the user to switch between the two power sources without the need for an extra coil.

The HJ4-AC100V is designed to be used in safety-critical applications, as it features built-in safety features such as dual open contact detection, reverse current protection, over-voltage protection, and over-temperature protection. The relay also incorporates a time-delay function, which enables the user to control the amount of time before the relay closes after power is applied.

The HJ4-AC100V is designed to be used in environments with temperatures ranging from -40°C to +85°C. It is also well-suited for use in wet and dusty conditions, as it features a dustproof and waterproof housing.

Conclusion

The HJ4-AC100V power relay is an ideal electrical component for connecting two circuits to transfer power over 2 amps. Its latching design, safety features, and environmental protection make it suitable for many industrial and commercial applications.

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