12V Relay

12 Volt Relay Module

A 12V relay is an electrical switch that can be activated by 12 volts. The relay is usually used to control devices that do not have their own power source, such as lights, fans, and other appliances. They can also be used to turn on or off an electrical circuit depending on the amount of current passing through the circuit. If you want to turn on your refrigerator or air conditioner by turning a knob or button, this type of switch will allow you to do so without having an electrician come out into your home and install a new circuit breaker box.

A typical relay consists of 5 pins. they are:

-2 coil pins
-COM
-Normally open (NO)
-Normally closed (NC)
Apply control signals to the two coil pins. For 12 V relays, the potential of this control signal must be 12 V. The remaining three ie. COM, Normally Open, and Normally Closed, are part of the high current switch. In this case, the COM pin acts as a switch connection. It also acts as a fulcrum for the working surface. The COM pin typically connects to the 12V power supply that supplies components such as light bulbs.
As for the other two pins, the Normally Closed (NC) pin, as its name suggests, is  connected to the COM pin by default when  no control signal is present on the coil. However, as soon as we apply a valid control signal to the coil, the actuator moves to the normally open (NO) pin. Devices that need to be controlled by a relay are usually connected to the NO pin, but this may vary depending on the application.

Uses of 12V Relay

• 12V Relay can be used as Automotive Relay
• They can be used for both AC and DC systems for protection of Load appliances.
• Can be used to control switching of light, motor, fan etc. with any programmable Microcontroller Unit like Arduino, node MCU and so on.

12V relay price in India

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