RY4S-UAC24V

Power Relays, Over 2 Amps: RY4S-UAC24V Application Field and Working Principle

Power relays that have ratings over 2 amps are medium current devices, capable of switching higher current without excessive contact wear. The RY4S-UAC24V is a 4-pin, PCB-mount, low signal power relay designed to be used in various electrical circuits requiring AC control and indication. It is capable of controlling a maximum switching current of 10 amperes (AC-1) and provides a compact size for increased efficiency and reliability.

Application Field

The RY4S-UAC24V is designed to be used in electronic circuits where AC current up to 10 amperes need to be switched on or off. This type of relay can be used in a wide variety of applications such as industrial automation, process control, machine control, lighting and heating control, machine monitoring, and more. It is suitable for use in any environment where switching loads over 2 amperes is required. The RY4S-UAC24V is designed to be resistant to electrostatic discharge, noise, and other electrical interferences.

Working Principle

The RY4S-UAC24V is a 4-pin single-coil latching relay. The four pins are needed to provide power to the relay coil (PC1) and connect it to the external circuit. The external circuit is typically comprised of an external AC load, controllable by the relay. The relay operates on a latching principle, which means it is capable of switching a load on or off without the need for an external power source. When the relay coil is energized by the PC1 pin, the internal contacts close and the load is turned on. To turn the load off, the energization of the coil needs to be reversed or interrupted. This is achieved by either reversing the connection of the relay coil power supply or by disconnecting it completely. The internal contacts of the relay then open and the load is turned off.

The RY4S-UAC24V also has a built-in LED indicator, which will indicate the state of the relay - whether it is switched on or off. As the LED lighter requires a separate power supply, the PC2 pin should be connected to a separate DC power source in order to power the LED.

Conclusion

The RY4S-UAC24V relay is an ideal solution for applications that require a compact, low signal power relay with the capability to control AC currents of up to 10 amperes. It is designed to operate digitally or manually and has a built-in LED indicator which provides clear feedback on the switch state. With its simple latch principle, the RY4S-UAC24V is easy to use and install, making it perfect for a wide variety of applications.