8021-05-01

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Reed relays are electromagnetically operated switches that have been used for several decades in a variety of applications. These types of relays are amazing small, long-lasting and lightweight. They are still popular today because of their reliability and wide range of applications.

Overview of Reed Relays

A Reed relay works by using a permanent magnet and forming a magnetic field around a small set of contacts. The contacts remain closed with the presence of a weak electromagnet that is energized, preventing the contacts from separating. This energized state is maintained until a current is passed through the electromagnet which will then attract the magnet and open the contacts, thereby breaking the circuit.

The Reed relay is most commonly used for the transmission of electrical signals. It has a very low power requirement and can be used with both DC and AC power systems. It also has very low on resistance and requires very little space due to its miniature size.

Reed relays have also been used for low power switching applications due to their high switching speed, low contact resistance and wide temperature range. Furthermore, the relays can switch both digital and analog signals and can perform operations including latching, switching, selecting and preserving.

8021-05-01 Application Field and Working Principle

The 8021-05-01 Reed Relay is a single-pole, single-throw device. It is used in applications such as telecoms equipment, metering and remote power systems where an accurate, low current contact is required. This type of relay has a footprint of 15.2 x 13.7 mm, and can handle current up to 4 A and voltages up to 250 V.

The 8021-05-01 utilizes an internal coil to open and close the contact. This works by the coil being energized by a current that passes through the attached wires. When enough current is passed through the links, it will create a magnetic force that is large enough to attract the internal magnet and open the contact. The current will then stop flowing and the coil will de-energize, allowing the contact to close again.

The 8021-05-01 has two operating states – closed and open. Its working principle depends on the current being passed through the external coil. When this current is applied, it will create a magnetic field around the contacts which then attracts and closes the contact and then allows the current to flow between the contacts. Conversely, when the current is stopped, the magnetic field dissipates and the contact opens again.

Conclusion

Reed relays are often used due to their stability, reliability and low power requirements. The Reed relay is especially useful for small applications where switching speeds of up to several thousand cycles are required. The 8021-05-01 is a popular option for telecoms equipment, metering and remote power systems due to its small size and low power requirements.

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