Langir 25mm Push Button Switch

Langir electric offers high quality push button switch to fit the standard 25mm panel cut out including anti vandal switch, piezo switch and capacitive switch. Being both vandal and splash resistant, this panel mount switch is heavy-duty and rugged in construction. Langir push button switch is your best partner to enlarge your local market.

Langir push button switch is constructed of non-oxidizing, corrosion resistant stainless steel. It has a protection rating of IP67, IP68 waterproof, meaning it can withstand exposure to heavy rain, splashes, etc., without damage. And you will like it.

You will find the switch and LED are separate. It is 1NO1NC or 2NO2NC, The LED can be on all the time or only when the switch is ON, depending on how you wire it. We also provide the wiring drawing according to your meaning.

L25 series pushbutton switch latching type may be used in a variety of applications including cars, motorcycles, boats, computers, LEDs, and electronics projects. Use them as a power switch for auxiliary LED accent lights on truck beds, boat trims, sailboat masts, car underbodies, and motorcycles.

Langir push button switch has passed different tests such as ROHS, REACH, temperature test customized. Etc.

Welcome to visit our website and contact us now. You will get a comfortable and quick reply.

25mm Push Button Switch – the Complete FAQs Guide

In this article, you can understand the complete details about the 25mm push button. Each possible question is discussed in detail. Some questions are explained through diagrams, pictures, and videos to give you a deep understanding of the product from the basic level to the advanced level.

1. What is a 25mm push button switch?

A 25mm panel cut-out push button switch is very common all around the world. This is specifically used on heavy-duty applications and electrical circuits.

There are several variants, shapes, designs, and colors in the cut out of the 25mm push button.

You can also wire each 25mm push button switch differently according to its purpose of usage and the type of application on which it is being installed.

These pushbutton switches have very elegant designs and a nice touch feeling.

2. What are the types of 25mm push button switch?

You can find so many types of 25mm push button switches in the market.

Here you can see some famous types of 25mm push button switch:

Backlit LED 25mm led switch

Backlit LED 25mm push button switch comes up with other panel cut-outs as well like 16mm, 19mm, and 22mm push button switch. The LED comes up with different colors.

Backlit LED 25mm push button switch

Ultra short 25mm push button switch

Ultra short 25mm push button switch is momentary waterproof push button protected with IP rating. It has a short body and low profile that can be used on any circuit board.

Ultra short 25mm push button switch

Vandal resistant 25mm push Button switch

This vandal-resistant push button switch has a flat head and is made with stainless steel. This push button has both latching and momentary options and also can be used as NO or NC push button. It is mostly used for the cabinet.

Vandal resistant 25mm push button switch

Capacitive 25mm push button switch

This capacitive 25mm push button switch is also waterproof and protected with IP rating IP68 and IP69K. That means it can survive even in high-pressure water jets as well. It can be installed in many outdoor heavy-duty applications.

25mm latching push button switch

Piezo 25mm push button switch

Piezo 25mm push button switch is a piezo switch. It comes up with a dot illuminated and ring illuminated, but not fully illuminated. Its wiring can be up to 30cm.

Piezo 25mm push-button switch

3. What kind of material is used in a 25mm push button switch?

Different type of material is used in the different type of switch 25mm. These push button switches are made with high-grade materials to make them work perfectly for heavy-duty.

Most commonly stainless steel 304 & 316L, and anodized aluminum material are used in the manufacturing of a push button 25mm.

metal material helps make plan surface and the minor scratches are not easy to be seen. However, it is also available in other materials as well.

4. What are the types of anti-vandal 25mm push button switch?

The 25mm vandal switch is available with multiple options. Some typical types of 25mm anti-vandal push button switch are:

• Momentary anti-vandal push button switch (1NO1NC)
• Momentary anti-vandal push button switch (2NO2NC)
• Latching anti-vandal push button switch (1NO1NC)
• Latching anti-vandal push button switch (2NO2NC)
• Illuminated/non-illuminated anti-vandal push button switch

An illuminated anti-vandal push button switch is available with dot and ring illumination. The LED is available in red, green, white, orange, blue, and yellow colors.

The base voltage of LED ranges from 3.3V to 220V and approximately useful life 40,000 hours. These anti-vandal 25mm push button switches are protected with IP65 and IK10.

5. Explain the dimensions of the anti-vandal 25mm push button switch

Dimensions of anti-vandal 25mm push button switches are different according to theirs type and option. You can see the examples of anti-vandal push button switch 25mm below:

 Momentary anti-vandal push button switch:

Dimensions of a momentary anti-vandal push button switch

Latching anti-vandal push button switch:

Dimensions of 25mm latching anti-vandal push button switch

Ultra-short anti-vandal push button switch:

Dimensions of an ultra-short anti-vandal push button switch

6. How to wire the circuit of an anti-vandal 25mm push button switch?

Wiring the electrical circuit of a vandal-resistant 25mm push button switch is not much complicated. Basic steps for the wiring of all kinds of anti-vandal push button switches are the same.

You just need to follow some simple steps which are explained below:

The backside of an anti-vandal 25mm push button switch

This is the screw terminal at the back of the vandal-resistant push button switch. This is an illuminated push button switch is with a blue LED.

Screw terminals of an anti-vandal push button switch

You have to make the leads of wire bare and insert them in these screw terminals according to their points.

Connecting wires in screw terminals

There is a sign of (+) and (-) on two opposite screw terminals. These terminals are to give power to the LED. Just connect the wire in these opposite terminals correctly.

The other two terminals have no signs or labels. Those screw terminals are for the switch. You can connect the other two wires with those terminals and tight all four screws.

Now your anti-vandal push button switch is wired. You can fix it on the board or any application and turn on the main switch to start an electrical flow.

7. What are the types of piezo 25mm push button switch?

Piezo switch is normally suitable for harsh use. They could be used under water 40m.

The types of piezo 25mm  push button switch are as follows:

• Momentary NO piezo push button switch
• Momentary NC piezo push button switch
• Latching piezo push button switch
• Non-illuminated piezo push button switch
• Dot illuminated piezo push button switch
• Ring Illuminated piezo push button switch

Piezo push button switch is also available in plastic but that is not available in 25mm cut out due to less voltage supply.

8. Explain the dimensions of the piezo 25mm push button switch

There are main three types of dimensions of the 25mm piezo push button switch. Further types are categorized in these three types, according to the circuit, connection, or usage requirements.

Dimensions of the main three type of 25mm piezo push button switch are:

Non-illuminated piezo push button switch:

Dimensions of a non-illuminated piezo push button switch

Dot-illuminated piezo push button switch:

Dimensions of a dot-illuminated piezo 25mm push button switch

Ring-illuminated piezo push button switch:

Dimensions of a ring-illuminated piezo 25mm push button switch

9. How to wire the circuit of a 25mm piezo push button switch?

Wiring the piezo 25mm push button switch is also easier like an anti-vandal push button switch.

Piezo push button switch is manufactured as one component, that is why there are no separate screw terminals to insert the wires for connection like an anti-vandal push button switch.

Figure 15 Backside of a piezo push button switch

As you can see in figure 15, there are no even signs or indicators to identify the correct wires. But you could find the wiring instructions in the catalogue.

You can get a better understanding from the following photo that how to connect the different wires of the 25mm piezo push button switch into the circuit:

10. What are the types of capacitive 25mm push button switch?

The capacitive 25mm push button switch has two different output options; NPN (Negative, Positive, Negative) and PNP (Positive, Negative, Positive).

Although both NPN and PNP transistors work almost the same but yet there is some difference between them.

NPN is normally used in input at industrial places because it produces a positive signal in the electrical circuit

While PNP, during the “on” state, generates the negative signals and mostly installed at non-industrial applications.

11. Explain the dimensions of the capacitive 25mm push button switch

You can see the dimensions of the capacitive 25mm push button switch in detail in the below diagram:

Dimensions of a capacitive 25mm push button switch

12. How to wire the circuit of a capacitive 25mm push button switch?

As you know that the capacitive push button switch works with sensors in it. It works with the finger touch or the touch of any part of human body.

This video will guide you on how it works and how to connect it with the electrical circuit. This tutorial video is made by using the sensor board as a push button switch and connecting it to the electrical circuit through wires.

The same sensor board is used in the 25mm capacitive push button switch and works in the same way. You can watch the below tutorial video regarding that:

13. Where the 25mm push button switch mostly used?

The 25mm push button switch is very common in use at different domestic and commercial places.

Anti-vandal 25mm push button switch is mainly used for heavy-duty applications or at industrial places.

Other common places for the anti-vandal push button switch are elevators, kiosks/vending, railway stations, yacht controls, defense, bus stations, parking, etc.

The most common use of the 25mm piezo push button switch is in the bathroom, kitchen, bike system, parking, access control, ATM, electromedicine, etc.

25mm capacitive push button switch is sensitive and not suitable under water.

A capacitive push button switch is used on applications where repetitive action is required by the operator.

Because capacitive push button switch does not require any pressure to push the button, so it is suitable on these kinds of applications to privilege the operator.

14. Can a 25mm push button switch be used outdoor?

Yes, a 25mm push button switch can be used outdoor.

Vandal-resistant and piezo 25mm push button switches are protected with an IP rating.

This means these push button switches can be used frequently in harsh weather.

A high IP rating will protect the push button switch from moisture, dust, or any other external objects.

25mm push button switches are also heat resistant as these switches are made to handle high voltage. That is why these push button switches can also survive in the direct sunshine.

15. Is the 25mm push button switch waterproof?

All types of 25mm push button switches are protected with an IP rating.

Anti-vandal 25mm push button switches are commonly used at outdoor places, especially at yards or ships.

So, these push button switches are highly protected with an IP rating to make them waterproof and to resist high-pressure water jets.

25mm piezo push button switches are also waterproof because they are used in the bathroom and other similar places.

Piezo push button switch is made as one single component, that helps to protect it from any kind of external object or moisture.

Capacitive push button switches use sensors and require high protection against moisture. So, IP rating protects them from any kind of moisture.

16. Can you make a customized 25mm push button switch?

Yes, you can place the order for your required 25mm push button switch.

The company will manufacture the push button switch according to your requirements.

There is wide flexibility in manufacturing the 25mm push button switch of your own choice.

You can simply send the drawing or describe the usage to the company representative.

The engineers will observe the technicalities in that design and approve if it is practical.

Then the company will manufacture it even at large quantity if you want.

You can choose your required material, color, or circuit as per your usage requirements.

The company will deliver you your desired product in a reasonable time frame and affordable price.

17. What kind of certifications and tests are followed in the manufacturing of a 25mm push button switch?

25mm push button switch is used for heavy-duty. So, it requires high protection for the user as well as for the manufacturers.

While manufacturing the 25mm push button switch, it goes through several tests and quality checks.

RoHS and REACH are the main certifications that are followed while manufacturing the 25mm push button switch.

There are some other temperatures and quality tests that are used to make sure the best quality and high protection for the end-users.

18. What is RoHS certification of a 25mm push button switch?

RoHS (Restriction of Hazardous Substances) is the European Union’s Directive 2002/95/EC based product level compliance.

The legislation of this is compliance protects the manufacturing of electronics-related products and makes it safe for every user.

25mm push button switch is manufactured with RoHS compliance.

RoHS compliance makes sure that consumer’s safety is a priority at every stage of the manufacturing procedure.

RoHS compliance certification not only makes the 25mm push button switch safer for end-users at all stages but also builds the trust of the users on the RoHS certified companies.

19. What is REACH certification of a 25mm push button?

REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) is the European Union’s regulation with aim of protecting the people from the harms of chemicals.

They aim to make a safe and secure environment for manufacturers and users.

To make the manufacturing and the usage of the 25mm push button switch safe and sound, it is tested as per REACH standards and certified the product.

REACH certification assures you that the 25mm push button switch has been gone through REACH tests.

So, you can use that REACH certified 25mm push button switch without any hesitation.

20. How many substances are there in REACH about 25mm push button switch?

REACH substances prevent products like electronic products from toxic chemicals and make them safer.

However, there are a few manners by which synthetic substances can enter the human body and the climate.

Substances can leave particles during buyer use, for instance into the air where they can be breathed in or ingested.

There is a wide list of REACH substances which includes several restricted substances for the 25mm push button switch and other products as well.

The REACH substances list is updated from time to time.

You can access the latest updated list of REACH substances from the official website of ECHA to get to know the relevant restricted substances for the 25mm push button switch.

21. What is the warranty for a 25mm push button switch?

Normally, every company provides a different warranty period for every product according to the usage durability of the product.

On average, the warranty period for a 25mm push button switch is 365 days.

With this timestamp, the company assures you that they will replace the 25mm push button switch if it is damaged due to a manufacturing fault.

There are some terms and conditions implied by the company for the warranty.

If you will not comply with the company’s terms and conditions, the company may not accept your claim or your warranty may expire even within the due period.

And this is not possible to extend or renew the warranty period.

22. Do you have any quality check procedures in your company?

Yes, there are so many quality checks while manufacturing the 25mm push button switch.

Quality check standards are very high in electronics-related products.

As you know that electrical products can cause high rated damages or personal injuries.

That is why every company wants to ensure high safety for the users.

They follow the safety measures of international and local regulatory bodies in the manufacturing process.

25mm push button switches pass through many safety tests to make sure 100% safety and satisfaction.

23. What is the maximum capacity of a 25mm push button switch?

The maximum electricity capacity of a 25mm push button switch varies according to its type.

25mm anti-vandal push button switch has maximum switch rating Ith: 5A Ui: 250VAC, contact resistance: <50mΩ, insulation resistance: >1000mΩ and dielectric strength: 2000VAC.

Ultra-short 25mm push button switch has maximum electrical rating 50mA & 24VDC, contact resistance: maximum 50mΩ, insulation resistance: minimum 1000mΩ and dielectric strength: 2000VAC.

25mm piezo push button switch has a standard rating of 200mA 24 VAC/DC at NO function and a maximum 600mA 24 VAC/DC at NC function. Switch resistance at ON position maximum 10Ω and at OFF position maximum 5Ω. LED voltage of dot illuminated is 10mA and ring illuminated is 20mA.

25mm capacitive push button switch has a maximum current/voltage rating of 200 mA 24 VDC and maximum supply voltage 24 VDC. Power consumption of non-illuminated is 7mA and for illuminated is 25 mA.

24. Is the 25mm push button switch weather resistant?

Yes, the 25mm push button switch is weather resistant. Most of the 25mm push button switches are used outside, especially all types of anti-vandal push button switches.

They can survive in almost all kinds of weather. Being a high voltage capacity switch, 25mm anti-vandal push button switches are also heat resistant up to 55°C.

And 25mm piezo push button switches are heat resistant up to 167°F. So, 25mm push button switches have great resistance power against harsh weather.

25. What is IK protection of 25mm push button switch?

IK protection stands for Impact Protection Rating (IK) for different electrical products.

IK rating is an international standard that decides the resistance level in various electrical products.

IK rating provides the different protection levels to the enclosures for the safety of different electrical products or equipment against mechanical impact.

26. Is IK rating protection important for all electronic products?

Yes, IK rating is important for all electronic products.

Because to upgrade the solidness of an electronic product and to make sure about it from residue and water it gets essential for manufacturers to make walled in areas that have higher IP and IK compliance.

Any section of solid/moisture entrance molecule into the framework could harm the electrical device.

To evade any such harm to the application or in specific cases to hold its proficiency it is significant for the electric products to be secured with IP and IK rating.

IK rating protection vital for the electrical products which are supposed to be installed outside.

27. Who makes IK protection standards?

IK protection standards were first made under European standards BS EN 50102 in 1995.

Then it was amended in 1998.

The current IK rating standards and codes were updated in 2002 and numbered as EN 62262.

This is equivalent to the international standard IEC 62262 (2002).

This is a worldwide numeric grouping for the levels of insurance gave by fenced-in areas to electrical equipment against outer mechanical effects.

It gives a method for determining the limit of a fenced-in area to shield its substance from outer effects.

28. Do you follow the IK rating while manufacturing a 25mm push button switch?

Customer safety is the priority for any electrical equipment manufacturing company.

Companies adopt extra protection standards while manufacturing high voltage electrical products like 25mm push button switch.

Not only the quality standards of national and international regulatory bodies are followed, but companies make their protection standards as well and follow them.

To follow IK rating standards while manufacturing the 25mm push button switch is much significant and companies strictly follow them.

Following the IK protection standards not only necessary for the protection of the consumer but also builds the trust of the customer in the company.

29. What are the different IK ratings?

The IK rating chart represents the different IK ratings for different protection levels.

IK ratings are numbered between 0 to 10 with 0 being lowest/no protection and 10 being highest protection.

You have to observe the risk factor by yourself before installing the push button switch.

If there is less risk, you can choose an IK rating between IK01 to IK07.

For high-risk areas, you can choose an IK rating above IK08.

You can see the IK rating chart below for your better understanding:

IK rating chart of 25mm push button switch

30. Is a 25mm push button switch protected with an IK rating?

Yes, a 25mm push button switch is protected with an IK rating. You can choose the 25mm push button switch with different IK ratings as per your purpose of use or the place where you want to install it.

If there is no risk of vandalism in the area where you wish to install the 25mm push button switch, then you do not require the IK rated push button switch.

But if you think the risk of vandalism is high or moderate, you can choose the IK rating for your 25mm push button switch according to that.

You can take help from the IK rating chart as well to choose the suitable IK rating for your 25mm push button switch.

31. Which IK rating is vandal resistant?

The IK ratings above IK08 are vandal resistant. The highest vandal-resistant IK rating is IK10. IK10 has great resistance against heavy masses.

It can protect your 25mm push button switch against the impact of up to 20 joules.

IK10 rating protects your 25mm push button switch from the masses of up to 5 kg. Like, it will protect your push button switch if you drop any 5 kg mass from 400 mm above the impacted surface.

This strong IK protection rating is used if your 25mm push button is installed at public places like schools, prisons, parks, subways, heavy industries, etc.

32. Is there any regulatory authority to regulate impact protection standards?

IK rating standards are regulated under European and IEC standards.

They deeply observe these IK rating standards and see their implementation in the market.

Implementation of these IK rating changes over time due to the changing behaviors of users, up-gradation in technologies, and advancement in user protection policies.

Then these regulatory bodies update the IK rating standards by doing some necessary amendments from time to time.

The main aim of these regulatory authorities is to maximize user protection by upgrading the IK rating standards.

33. Are there any international or local standards available for the installation of a 25mm push button switch?

Several regulatory bodies provide guidelines and standards for electrical equipment and products.

There are no specific guidelines or standards by these regulatory bodies for the installation of the 25mm push button switch.

Some international bodies like IEC and NEMA provide the standards for packing and sealing the 25mm push button switch.

However, you can follow the general instructions and adopt the proper SOPs to install the 25mm push button switch.

34. What kind of safety precautions must be followed while installing the 25mm push button switch?

You must follow the safety precautions and adopt proper SOPs while installing the 25mm push button switch.

Otherwise, you may face any materialistic losses or personal injuries.

Some basic safety precautions for the installation of a 25mm push button switch are:

• Switch off the main electric supply before initiating the installation
• Do not touch the bare wires or any electric part if it has an electric supply within it
• Always supply the voltage according to the capacity of a push button switch
• Use the appropriate wires in the wiring according to the voltage capacity of your application and do not use high or low capacity wires from the application capacity
• Use the safety gloves and proper tools while performing the installation
• Do not use low-quality wires or electrical products, that may damage your circuit

35. How does a 25mm momentary push button switch works?

The 25mm momentary push switch (also known as the non-latching push button switch) works only when you press the push button.

It makes a temporary change in the circuit when you press the push button.

When you release the button, it goes back to its actual position with the help of spring.

And the circuit also goes back to its actual position.

A 25mm momentary push button can be in two states; push to make and push to break.

A ‘push to make’ momentary push button switch is NO switch.

This means when you press the push button, it connects to the circuit and electrical flow starts in the circuit.

As a result, the application starts working.

Depressing the push button will turn off the circuit.

You can see its electrical symbol below:

Electric symbol of push-to-make 25mm push button switch

A ‘push to break’ momentary push button switch is an NC switch.

In its default position, the electrical circuit connected and the device is running.

Pressing the push button will break the circuit.

And the device or application will stop working.

When you release the button, it will make the electrical circuit again.

Push to break momentary push button switch has very little use in the market.

You can see its electrical symbol below:

Electric symbol of push-to-break 25mm push button switch

36. How does a 25mm latching push button switch works?

The 25mm latching push button switch works at the opposite method from the momentary horn switch.

The 25mm lockable push button maintains its position when you press or release the push button.

It can also become up with a ‘push to make’ or ‘push to break’ state.

Actuating the push button each time will change its state i.e. from ‘push to make’ to ‘push to break’ or from ‘push to break’ to ‘push to make’ state.

37. What is the difference between a toggle switch and a push button switch?

Toggle switches can be activated by a switch calculated in one of at least two positions.

Most of the toggle switches will stop in any of their switch positions, while others have an inside spring system restoring the switch to a specific typical position, considering what is designated “momentary” activity

The electrical symbol of the toggle switch is below:

Electrical symbol of a toggle switch

The Push button switch works in two positions.

It latches between two positions with the use of spring.

Pressing and depressing the push button will change the position of the electrical circuit.

The electrical symbol of the push button switch is below:

38. What is a maintained 25mm push button switch?

A maintained 25mm push button switch shuffles its position when activated, and stays on that position until you actuate it again.

A maintained 25mm push button switch is used at the places where long term operating of any specific function is required.

For example, operating any industrial machine, light, fire alarm, etc.

39. What are the specifications of the illuminated 25mm push button switch?

The 25mm illuminated push button comes up with two different illumination options; ring illumination and dot illumination.

These are protected with IP65 and IK10 ratings. The voltage of the base LED is between 3.3V to 220V.

You can choose the color of its LED from white, green, blue, red, yellow, and orange.

And expected useful life of the LED of illuminated 25mm push button switch is 40000 hours approximately.

40. Can a 25mm push button switch come up with SPDT?

Yes, a 25mm push button switch can come up with an SPDT (single pole double throw) switch type.

It has a total of three pins, one input, and two output pins.

It means you can select your 25mm push button switch with two output devices.

Or you can shuffle between two output devices, depends on how wire the circuit.

When it shuffles between different output applications, the connection of one of the output terminals disconnects and connects with the other.

SPSDT switch circuit diagram shows as follows:

Circuit of SPDT 25mm Push Button Switch

41. Can a 25mm push button switch come up with SPST?

25mm push button switch also comes up with SPST (single pole single throw) switch type.

SPST is a simple type of switch with simply one output terminal and one input terminal.

SPST switch is normally used as an on/off push button switch and there is no other option in it.

You can operate only one output device with the SPST 25mm push button switch.

You can see the circuit diagram of the SPST switch below:

Figure 23 Circuit of SPST switch

42. Can a 25mm push button switch come up with DPDT?

The double pole double throw (DPDT) switch can be used for multiple functioning.

It has six terminals and two separate terminals for LED.

DODT is the merger of two SPDT switches.

In this way, two separate electrical circuits can be controlled with one 25mm DPDT push button switch.

It can come up with 1NO1NC or 2NO2NC options.

The circuit of the DPDT switch is as below:

43. How to wire an SPDT, SPST, and DPDT circuit with a 25mm push button switch?

You can circuit the SPDT, SPST, and DPDT 25mm push button switches in multiple ways as per your usage requirements.

In the following demo video, you can see the wiring of SPDT, SPST, and DPDT switches and their function.

You can also modify its wiring according to your requirements.

Rules of wiring of all these switches are the same in push button switches, toggle switches, or any other switches.

44. Can a 25mm push button switch be used in safety applications?

As you know that 25mm push button switch is used at high voltage applications and circuits.

So, there is no issue in using the 25mm push button switch in safety applications.

It has strong resistance against heat, water, and vandalism.

You can use the 25mm push button switch as an emergency push button switch at public spaces like hospitals, schools, office buildings, parks, etc.

You can use it as a fire alarm as well.

It can be used in harsh weather as well.

45. Can a 3-way switch be used as a single-pole 25mm push button switch?

Yes, you can use a 3-way switch as a single-pole 25mm push button switch.

You can just convert your 3-way switch into the single-pole 25mm push button switch.

First of all, you have to connect the wires to the one traveler terminal.

Just disconnect the wire from another traveler terminal and leave it blank.

After removing the traveler wire, just install the wire connecter on it and the other side of that wire will be on the load side.

Then, to the other traveler wire, connect the 3-way switch common wire, to supply switched line voltage to the light and install a blank cover. See the below diagram:

Then remove the 3-way switch from the line side box. Connect the line wire to one of the traveler wires using a wire connector, to supply line voltage to the 3-way switch in the load side box. To make the other traveler free, install a wire connector on it. And then install a blank cover on the box.

Remove the traveler spare wire from the switch in the load side box, and then attach a wire connector to it. See the below diagram:

Circuit of single pole switch on the load side

46. How to test the 25mm push button switch before installing it?

You can test the 25mm push button switch in four steps.

Step 1:

Turn on the multimeter and select the ohmmeter function.

The resistance range should be ‘x1’.

If the ohmmeter has auto range capability then you can skip this step.

Test switch ohm meter

Step 2:

Insert the leads into the meter and touch the probe tips with each other to check whether the meter is working or not.

If the meter shows 1 or less in the display, it means the meter is working fine.

If it shows some other figures, just change the ohmmeter.

Testing the ohmmeter

Step 3:

Connect the red lead to one terminal and the black lead to another terminal of your push button switch and turn ON the push button switch.

If the ohmmeter displays 1 or less, it means the push button switch is perfectly ON.

Testing the push button switch at ON position

Step 4:

Put your push button switch at the OFF position.

If the display shows ‘OL’ or high frequency, it means the push button switch is perfectly OFF.

You can test your 25mm push button switch several times in the same way.

If it gives the same results, you can install it with confidence.

Testing 25mm push button switch at OFF position

47. What kind of wires are normally used in the circuit of a 25mm push button switch?

25mm push button switch is used in heavy-duty. So, it requires connecting with high voltage wires.

Its wire capacity still varies according to the type of 25mm push button switch.

But normally AGW22 to AGW26 wire are selected to connect with the 25mm push button switch.

Some 25mm push buttons come up including wire in the market.

48. What is the estimated useful life of a 25mm push button switch?

The estimated useful life of a 25mm push button switch varies according to its type.

The anti-vandal 25mm push button switch has an estimated mechanical life of 1,000,000 cycles and electrical life of more than 50,000 cycles.

The 25mm piezo push button switch has estimated useful life of 50 million cycles.

And the 25mm capacitive push button switch also has expected useful life of around 50 million cycles.

49. How much temperature resistance are different 25mm push button switches?

25mm push button switches are used for heavy-duty, that is why they have strong resistance against heat.

The 25mm anti-vandal push button switch has heat resistance power up to 55°C.

The 25mm piezo push button switch has the strongest heat resistance up to 75°C.

The 25mm capacitive pus-button switch can resist temperature up to 65°C.

50. Is the 25mm push button switch vibration resistant?

Yes, but not all the types of 25mm push button switch has vibration resistance.

Only the 25mm piezo push button switches are vibration resistant.

The 25mm piezo push button switch has vibration resistance up to 10-500 Hz / 10 g per IEC 60068-2-6.

51. Explain the wiring of momentary and latching push button switch through a diagram.

The wiring of the 25mm momentary push button and 25mm latching push button switch is explained through the following diagram:

Wiring diagram on momentary and latching 25mm push button switch