HJ4-T-AC12V

Power relays can be found in a variety of applications where a controlled switch is required and the choice of the relay often depends on the current and voltage to be controlled. The HJ4-T-AC12V relay is one such solution, providing a cost-effective and reliable switching solution for systems carrying power up to 2 amps.

Overview of HJ4-T-AC12V relay

The HJ4-T-AC12V is a miniature dc-operated electromagnetic switching relay. It is designed to provide the necessary control connection for machinery, including automobiles, industrial control computers, and other automated equipment and robots. This relay requires a minimum voltage of 12V and a maximum current of 2A, making it suitable for most small-scale applications.

Application fields of HJ4-T-AC12V relay

The HJ4-T-AC12V relay has a wide range of uses in various industries. In the automobile industry, it is used for starting engines, controlling lighting, and other similar applications. It can also be used for computer and industrial automation for switching motors or relays on and off and controlling other process equipment. It is also used in home appliances such as refrigerators, air-conditioners and other consumer electronics, such as televisions and radios.

Working principle of HJ4-T-AC12V relay

The HJ4-T-AC12V is a latching relay with a coil and two contact sets. When a DC source is applied to the relay coil, the magnetic field created by the coil causes the two contact sets to move and make contact with each other. This closed circuit activates the controlling device such as a motor, circuit breaker, switch, etc. When the power supply is disconnected, the contact set will remain in the current state, regardless of the type of source applied. The two contact sets can be controlled by either Normally Open (NO) or Normally Closed (NC) switching.

When the power supply is connected, the current running the coil creates a magnetic field and the iron core inside the relay is attracted to this field. This action draws the armature towards the coils, which causes the two contact sets to make contact, activating the device being controlled. Once the power supply is disconnected, the armature is released from the coil, and the contact sets remain in the same position regardless of the power source. This is how the latching operation is achieved.

Conclusion

The HJ4-T-AC12V is a versatile electromechanical relay, suitable for a variety of applications where control switching is required. From automotive controllers to home appliance controls, this powerful mini relay provides reliable switching up to 2 amps. Its latching principle ensures that the relay remains in one position even when the power source is disconnected.