RV8H-1S1-D9 Relays

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Power relays provide the ability to control a circuit by momentary operation of switches with a relatively low current flowing through the controlling switch. The RV8H-1S1-D9 belongs to a product category referred to as power relays, with current ratings over 2 amps. This paper will discuss the application field and working principle of the RV8H-1S1-D9.

Application Field

The RV8H-1S1-D9 is mainly used to control the on and off of 50Hz/60Hz AC load. This relay is suitable for the switching circuit of general purpose control. The rated current for the relay is 8A. It is mainly constructed of the two parts, the frame and the contact point.

• Frame: Consists of the plastic cover, the protecting diode and the arc suppression coil, etc.
• Contact Point: Consists of a coil and a switching contact point. When the coil is energized, the contact point is open or closed depending on the direction of the current.

In terms of the external appearance, the RV8H-1S1-D9 looks symmetrical and the terminal pins are set at the same height. Also, it is designed with an integrated plastic cover for the protection of the contact point for a longer life expectancy.

Working Principle

The basic principle of this relay is simple: the coil is magnetized when the current is supplied to it, thus pulling down the coil and closing the contact point. The other end of the coil is connected to the common side, therefore when the current is cut off, the coil is released and opens the contact point again.

The RV8H-1S1-D9 relay comes with an integrated arc suppression coil, which reduces the arcing when the contacts are opened or closed. This reduces the stress on the contact points and hence prolongs the life of the relay. Moreover, an integrated protecting diode is also provided to reduce the voltage spikes in the circuit when the current is cut off.

In order to ensure the reliable switching operation, the RV8H-1S1-D9 relay is designed to have an operating temperature range from -40°C to 85°C. This broad temperature range allows the relay to work reliably in various environmental conditions.

Conclusion

The RV8H-1S1-D9 belongs to the power relay category, with current ratings over 2 amps. It is mainly used to control the on and off of AC load, and the rated current for the relay is 8A. This relay is designed with an integrated arc suppression coil and protecting diode for a longer life expectancy and reliable switching operation. With its broad temperature range, it is suitable for various application environments.

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