Power Relays, Over 2 Amps

A power relay is a device used to control and open or close one or more electric circuits. This can be done either mechanically or electronically. A KRP-11DY-12 relay is a type of power relay that is able to handle a minimum of 2 amperes and is designed for the purpose of controlling or switching larger currents. This article provides an overview of the application field and working principle of the KRP-11DY-12 power relay.

Application Field

The KRP-11DY-12 power relay is typically used in applications such as home appliances, automotive and industrial machinery, and lighting. It is designed for use in power circuits when controlling or switching larger loads such as motors and lights. The relay is able to handle voltages up to 250 vac and currents up to 10 amperes. The KRP-11DY-12 has a thermoplastic contact system that is waterproof and dustproof, making it suitable for use in humid and dirty environments.

Working Principle

The working principle of the KRP-11DY-12 power relay is relatively simple. When a controlled circuit is closed by the relay, the current flows through the relay coil and creates an electro-magnetic field. The metal strips within the coil are attracted by the field and the armature is forced to move, thus breaking the connection between the two sets of terminals and opening the controlled circuit. When power is then removed from the system, the armature returns to its original position and closes the circuit, and the coil loses its magnetic field.

The KRP-11DY-12 power relay is able to control both AC and DC circuits. The two current paths are the same, but the differences lie in the voltage and current ratings. For DC circuits, the voltage rating is typically 16-30V, and the current rating is 6-10A. For AC circuits, the voltage rating is typically 90-250V and the current rating is 2-4A.

Conclusion

The KRP-11DY-12 power relay is a versatile device that is used in a variety of applications to control larger currents. With its waterproof and dustproof thermoplastic contact system, it is suitable for use in harsh environments. The KRP-11DY-12 also features high voltage and current ratings, making it a reliable choice for controlling larger loads such as motors and lights. The working principle of the KRP-11DY-12 is simple and easy to understand, making it a popular choice for controlling both AC and DC circuits.