Types of Push Button Switches and How to Choose the Right One

The push button switch is a small component, but it forms the backbone of almost every electronics project. Whether you're building a simple LED circuit or designing an industrial control panel, picking the wrong switch can cause the entire circuit to fail — through arcing, overheating, or premature wear.

In this guide, we'll cover :

What a push button switch is and how it works
All the major types of push button switches (momentary, self-lock, metal, plastic, tactile, and more)
Key specifications to check before buying
A quick comparison table + FAQs to make your buying decision easier

If you're looking to buy push switches in bulk or retail, browse Electronicspices' Push Switch collection — 300+ verified options available.

What Is a Push Button Switch?

A push button switch is an electromechanical component that opens or closes a circuit when pressed. Internally, it has a spring-loaded mechanism that returns the switch to its original position once released (in momentary types), or a locking mechanism that holds the button in the pressed state (in self-lock types).

These switches are used across nearly every industry — home appliances, automotive dashboards, industrial machinery, DIY robotics kits, and consumer electronics.

Main Types of Push Button Switches

1. Momentary Push Button Switch

This is the most common type. The circuit closes/opens only while the button is pressed — releasing it returns the switch to its default position instantly.

Best for: doorbells, horn switches, reset buttons, temporary trigger circuits.

Electronicspices offers momentary options including SPST horn-type switches (round and rectangular shapes), covering a 12V to 50V DC range and 5A–10A current ratings.

2. Self-Lock (Latching) Push Button Switch

Here, pressing the button once locks it into the "ON" position, and pressing it again returns it to "OFF" — similar to a toggle action, but through a push mechanism.

Best for: power ON/OFF applications, control panels, anywhere a continuous state needs to be maintained.

3. Metal Push Button Switch

Built with a stainless steel or nickel-plated brass body, these switches are known for durability and weather resistance. Most are IP65-rated — meaning waterproof and dustproof.

Best for: outdoor panels, industrial machinery, automotive applications, door exit switches.

Electronicspices' metal push button range includes 12mm/16mm self-lock switches with LED ring indicators (red/blue) — ideal for labeling control panels.

4. Plastic Body Push Button Switch

Lightweight and cost-effective, plastic body switches are ideal for DIY and consumer electronics projects where a heavy-duty rating isn't essential.

Best for: hobby electronics, educational kits, low-current household circuits.

5. Tactile Push Button Switch

Small in size (6x6mm or 12x12mm), these switches mount directly onto PCBs and give a "click" feedback when pressed.

Best for: microcontroller boards (Arduino/ESP32), keypads, remote controls, calculators.

6. Ring-Light / Indicator Push Button Switch

These switches come with a built-in LED ring that visually shows ON/OFF status — giving operators clear visual feedback on control panels.

7. Door Exit / Panel-Mount Push Button

Larger in size (e.g., 86x86mm) and built from stainless steel — used in access control and door release systems.

Electrical Configuration by Switch Type

When buying a push button, it's also important to understand the contact configuration:

Type	Full Form	Function
SPST	Single Pole Single Throw	Simple ON/OFF — controls a single circuit
SPDT	Single Pole Double Throw	One input, switches between two output circuits
DPDT	Double Pole Double Throw	Controls two separate circuits simultaneously (e.g., motor direction control)

What to Check Before Choosing a Push Button Switch
Operation Type — Momentary or self-lock?
Size and Mounting Hole — Common sizes: 12mm, 16mm, 19mm (match with your panel cutout)
Voltage and Current Rating — Check against your application's load (options range from AC 250V 0.5A to DC 12V 10A)
Indicator Requirement — LED or non-LED?
Body Material — Metal (durable, weatherproof) vs Plastic (lightweight, budget-friendly)
IP Rating — For outdoor/industrial use, look for an IP65 waterproof rating
Application Environment — DIY project, home automation, or industrial panel?

Quick Comparison Table

Switch Type	Body Material	Typical Rating	Best Use Case
Momentary Horn Switch	Plastic	12–50V DC, 5–10A	Doorbells, triggers, DIY
Self-Lock Metal Switch	Stainless Steel	12–24V, 2A, IP65	Control panels, outdoor
Ring-Light Indicator Switch	Metal + Plastic	12V DC, 2A, IP65	Panels needing visual status
Tactile Switch (6x6/12x12)	Plastic (PCB mount)	Low voltage/current	Arduino, ESP32, keypads
Door Exit Switch	Stainless Steel	12V	Access control systems

FAQs

Q1. Which switch is suitable for home automation and DIY projects? Mini WiFi Smart Switch Modules with app/voice control are best for home automation. Push button and toggle switches are widely used in DIY electronics, robotics, and educational projects

Q2. Are switches with LED indicators available?

Yes, many switches come with built-in LED indicators (blue, green, yellow, red) — useful for status visibility in control panels and machinery.

Q3. What should I use for industrial or heavy-duty applications?

Nickel-plated brass, IP65-rated push button switches and high-current toggle switches are suitable for industrial control panels and automotive applications. Always verify the voltage/current rating before installation.

Q4. What's the difference between SPST, SPDT, and DPDT switches? SPST is a simple ON/OFF switch. SPDT selects between two circuits from a single input. DPDT controls two separate circuits at once — such as in motor direction reversal.

Conclusion

Choosing the right push button switch depends on operation type, size, current rating, and application environment. Whether you need a small tactile switch for an Arduino project or an IP65-rated metal switch for an industrial panel — matching the right specifications is the key to long-term reliability.

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