HE721A1220

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Reed Relays

Reed relays are electric relays that use an electromagnet to control one or more reed switches. They are often used in low-voltage or low-power circuits. The HE721A1220 is a type of reed relay, typically used in high voltage applications. It is designed to switch currents up to 24Amp and withstands voltages up to 10kVac.

HE721A1220 Application Field and Working Principle

The most common applications of the HE721A1220 are in air-conditioning and refrigeration control. It is also used in electric motor control, sound systems, and Wi-Fi networks. This relay can be used in a wide array of applications that require the switching of high voltage and current.

The HE721A1220 has a compact size which makes it very convenient to install and use. The reed relay is also very reliable and can withstand many on/off cycles without failing. The switching time of the relay is very short, which makes it ideal for controlling applications with rapid switching cycles.

The working of the HE721A1220 relay is based on the principle of an electromagnet. When the current is applied to the relay, a magnetic field is generated. This magnetic field attracts the reed switches which then open or close depending on the flow of current. When the electric current is switched off, the magnetic field collapses and the reed switches close automatically.

The HE721A1220 has a long life expectancy and is capable of withstanding surges and extreme temperatures. The protective coating on the relay further enhances its durability. The relay is also very economical and doesn’t require a large amount of energy to switch on/off. Overall, the HE721A1220 is an ideal choice for applications that require switching of high voltage and current.

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