KRD9220B Industrial Controls

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Time Delay Relays are a class of electromechanical relays used in many different contexts. They provide prospective user protection from unexpected triggering with their precise control of timing. The KRD9220B is one such relay that provides reliable functionality and exceptional controlling capabilities.

The KRD9220B relay works on a external power supply of 4.5 to 26.0 V DC, with a controllable output voltage between 0 and 28 V DC or 0 and 45 V AC. It is a two-element type with adjustable setting and pulse width. A trigger signal to the input is needed for the relay to start to generate its output voltage. The trigger signal should be continuous. When the trigger is removed, the output voltage will drop.

Generally, KRD9220B relays are used in cooling and other thermal systems. This relay is capable of precise delayed switching of the compressor to reduce power consumption, as well as ensuring good cooling quality and a more efficient compressor. This protects expensive components from damage due to over-current.

In addition, the KRD9220B can be used for pressure sensing, preventing dry-running of pumps when there is insufficient water supply. They can also be used to control top-off systems, ensuring that indoor air pressure is consistent. This decreases the frequency of the heater being needed to keep the room at an optimum temperature.

KRD9220B is also used in lighting control. It can automatically switch between day and night mode based on a pre-set time, and also detect motion and presence. This prevents the energy being wasted by unneeded lighting.

KRD9220B is extremely flexible, and its working principle is fairly simple. When the trigger signal is received and the relay is already ON, the input contacts are connected. The voltage can then be supplied to the output, as well as an additional device, for a set amount of time. Once the timer expires, the output voltage is dropped and the output contacts are disconnected. The time setting is adjustable depending on the user\'s needs.

Time Delay Relays like the KRD9220B offer a range of possibilities for users to ensure reliable performance and cost savings. With its precise control of timing, it is a great tool for protecting components from unexpected triggers. It can be used in many applications, including cooling systems, pressure sensors, top off, and lighting control.

The specific data is subject to PDF, and the above content is for reference