12V 30A 8 Pin / 24V 30A 8 Pin Micro & Mini Headlight Relay From China Supplier

Product Description:      

   Micro & Mini Headlight Relay

OEM:      

   NO.

Voltage:     

   12V    /    24V

Rated Current:     

   30A    /    30A

I. What Is an Automotive Relay?

     Physically, a common 12-volt relay contains a series of electrical components set inside a small cube or cylinder box made up of hard plastic or aluminum.

     You'll see relays with 3 or 4 pins often, but others with 5 and 6 terminals are not unusual. These automotive relays come in different sizes and ratings. And you'll find them under the hood inside the "block" or "power distribution center" box; inside the cabin, in fuse boxes under the dashboard; behind kick panels, and even mounted by themselves.

     They switch power on and off circuits around the transmission, engine and accessories like the fuel pump, the headlights, the brake lights, the wipers and horn.

A common electromechanical relay.

    II. How It Works

            It helps to think of a relay as a regular switch, like the    

     one you use at home to turn on and off the lights in a room.

     Why duplicate a simple switching function by having an extra        switch inside a box?

          Actually, this turned up to be a convenient set up in        

     electrical circuits. You not only use a small, safer current  

     circuit — the control circuit — to switch on and off a higher

     current circuit — the controlled circuit — but a relay can be

     placed in a strategic location to reduce the amount of — and

     expenses in — thicker gauge wire needed for high current

     circuits.

      Testing Relays