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Power Relays, Over 2 Amps: KUH-7D47-12 Application Field and Working Principle

KUH-7D47-12 is a type of power relays that feature an open-frame construction with a rating of over 2 amps. This specific model is categorized as a "breaker" relay, as it is designed to withstand a current or voltage interruption, and is used in a variety of applications. One of the main advantages of using power relays with an open-frame construction is that they are more efficient in terms of thermal losses and current flow.

Application Field

KUH-7D47-12 power relays are typically used in industrial, heavy-duty applications, where the reliability of the relay could be critical. Examples of this could include automated systems, machines used in production lines and hazardous area control systems. In addition to providing reliable switching, this type of power relay also offers a significant amount of control over the amount of current or voltage that is transferred. This can be beneficial in applications where the amount of power demanded must be held in a specific range.

Power relays are also commonly used in electronic device design, such as home appliances and medical equipment, where the KUH-7D47-12 can provide reliable switching of lower-amperage circuits.

Working Principle

The KUH-7D47-12 power relays feature an open-frame construction. This means that the internal circuit of the relay is completely exposed, which allows the signal to flow from the control coil to the contact terminal, allowing for a tight and reliable connection. This type of relay uses a magnetic field to open and close the contact when an electric current is applied to the control coil.

When the current is applied to the control coil, it magnetizes a plunger or armature and causes it to move. This movement will open or close the contact, depending on the position of the plunger. The magnetic field will then release the contact and the plunger will return to its original position, allowing the contact to open or close again when the current is applied. This allows for reliable, smooth switching without any arcing.

The most important part of any power relay is its contact design. The KUH-7D47-12 contact design features a dual-action contact, which is able to open and close at the same time. This contact design helps reduce risk of potential sparking and arcing due to the dual-action mechanism. This type of power relay also features a wide selection of auxiliary contact materials that can be used to provide additional protection against current or voltage interruptions.

The KUH-7D47-12 power relays are a well-rounded and reliable type of power relays that are suitable for a variety of applications. They are highly efficient, durable and offer a wide selection of contact materials for greater protection and reliability. The open-frame design ensures reliable switching with minimal arcing and current losses, making them ideal for heavy-duty and hazardous applications.

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