12v momentary push button switches are often used in automotive and marine applications, as well as in various DIY projects. These switches are designed to be pressed and released quickly, allowing them to function as momentary switches. Wiring these switches can be tricky, especially if you are not familiar with electrical wiring. In this article, we will discuss everything you need to know about wiring 12v momentary push button switches.
What is a 12v Momentary Push Button Switch?
A 12v momentary push button switch is a type of switch that is normally open and only closes when it is pressed. These types of switches are often used in automotive and marine applications to control power to various systems. They are designed to be pressed and released quickly, making them ideal for momentary applications.
The main advantage of a momentary push button switch is that it provides a temporary connection that can be used to control multiple circuits. This allows you to quickly turn on or off various systems with a single button press.
How does a Momentary Push Button Switch Work?
A momentary push button switch works by using a spring-loaded button that opens and closes an electrical circuit. When the button is not pressed, the switch is open and no current flows through it. However, when the button is pressed, the switch closes and allows current to flow through the circuit.
The button is connected to a metal contact that is normally held away from another contact by a spring. When the button is pressed, the metal contact moves towards the other contact, creating a connection and allowing current to flow through the circuit.
How to Wire a 12v Momentary Push Button Switch?
Wiring a 12v momentary push button switch is relatively simple. There are two ways to wire these switches: normally open and normally closed.
Normally Open Wiring
The normally open wiring is the most common way to wire a 12v momentary push button switch. In this wiring, the switch is normally open, and it only closes when the button is pressed. To wire a normally open switch, follow these steps:
| Wire Color | Function |
|---|---|
| Red or Black | Power (+12v) |
| Yellow or White | Output (+12v) |
| No color or Green | Ground (-) |
- Connect the power wire to the positive (+) terminal of the battery or power source.
- Connect the output wire to the circuit or component that you want to control.
- Connect the ground wire to the negative (-) terminal of the battery or power source.
- Connect the other end of the output wire to the negative (-) terminal of the circuit or component that you want to control.
When the button is not pressed, the switch is open, and no current flows through the circuit. However, when the button is pressed, the switch closes, completing the circuit and allowing current to flow through it.
Normally Closed Wiring
The normally closed wiring is less common than normally open wiring. In this wiring, the switch is normally closed, and it only opens when the button is pressed. To wire a normally closed switch, follow these steps:
| Wire Color | Function |
|---|---|
| Red or Black | Power (+12v) |
| Yellow or White | Output (-) |
| No color or Green | Ground (-) |
- Connect the power wire to the positive (+) terminal of the battery or power source.
- Connect the output wire to the circuit or component that you want to control.
- Connect the ground wire to the negative (-) terminal of the battery or power source.
- Connect the other end of the output wire to the positive (+) terminal of the circuit or component that you want to control.
When the button is not pressed, the switch is closed, and current flows through the circuit. However, when the button is pressed, the switch opens, breaking the circuit and stopping the flow of current.
FAQs
Yes, you can. However, you will need to use a voltage converter or regulator to ensure that the switch operates correctly. Without a voltage converter or regulator, the switch may not work correctly, or it may damage the system that it is connected to.
The maximum current rating for a 12v momentary push button switch varies depending on the manufacturer and model. However, most switches have a maximum current rating of between 5 and 10 amps. Before using a switch, always check the manufacturer’s specifications to ensure that it is suitable for your application.
Yes, you can. However, you will need to use a separate wire for each switch and ensure that they are properly grounded. When wiring multiple switches together, it is important to label each wire to avoid confusion.
You can test your switch by using a multimeter to check the continuity between the output terminals when the switch is pressed and released. If there is no continuity when the switch is pressed and released, the switch may be faulty.
Yes, you can. However, you will need to ensure that the switch is rated for the amperage of the motor and that you use a relay to control the motor. Using a relay will prevent the switch from burning out due to the high current draw of the motor.
Conclusion
Wiring a 12v momentary push button switch is relatively simple, as long as you follow the proper wiring instructions. When wiring these switches, it is important to ensure that you are using the correct wiring diagram and that you are properly grounding the switch. If you have any questions or concerns about wiring a 12v momentary push button switch, consult a professional electrician or technician.
