Langir 30mm Push Button Switch & Bigger Size

Langir electric is a leading manufacturer in China that specializes in big size A push button switch. Langir provides panel cutout 28mm, 30mm, 35mm, 40mm.

Designed in compliance with international standards, Langir lines of push button switch were developed to meet the signaling, control and electric command requirements in a wide range of industrial applications.

Langir 30mm push button switch is made of metallic materials which are not easy to be broken. That is why it is called anti vandal and the service life is longer compared to other similar products. Due to the metal surface, it is easy for you to clean which is more suitable for harsh conditions.

Langir 30mm push button is available as momentary or latching in both SPST and DPDT, normally open and normally closed. Flush actuator styles offer non-illuminated, bi-color ring or dot illumination. Illumination color choices are red, yellow, green, blue, white, and orange. LED voltage choices range from 6V to 220V.

Langir electric offers precise, reliable & cost-effective push button switch solutions for OEM applications with our strong technical support. Once you send us your idea or drawing, our team will send you the quotation in 3 days. From the idea to the completed drawing, samples confirmation, it is very fast to start your orders.

Now contact us! Get an instant quote!

30mm Push Button Switch – Complete FAQ Guide

This guide is all about the things which you want to know before buying 30mm push button switch.

This guide covers A-Z questions that you might have about 30mm push button switch.

1. What is 30mm push button switch?

30mm push button switch has an electric mechanism or air mechanism that involves switching on and off a unit, object, or anything else.

This type of switch button has different models with various sizes, and each push button switch has its specifications.

They are also called momentary push button switch normally open or latching Normally closed push button switch Due to their high functioning quality.

Stainless Steel Material for 30mm Push Button Switch

They sometimes operate with SPDT latching push button switch Or as DPDT Momentary push button.

30mm push button switches are made with sturdy and robust material, and this makes them long-lasting.

Usually, they are constructed with metal or plastic and are protected from dust and water.

2. What is the principle behind 30mm push button switch?

The 30mm push button switch is an electrical command device. In electrical control circuits, it is typically pressed by hand to initiate the operation of various electrical products, such as AC contactors, relays, timers, etc.

It is composed of a button head, return spring, bridge contact, and shell. It can be pressed to start or stop a function.

Typically, each 30mm LED switch has one pair or two pairs of contacts. When pressed, the normally closed contact opens and the normally open contact closes, or vice versa.

For piezoelectric switches: A piezoelectric switch is a sensor switch based on the piezoelectric effect. Its working principle relies on the piezoelectric effect, which is the electrical charge naturally generated by certain materials (such as quartz) under pressure.

Piezo Switch Wiring Diagrams

3. What are the types of 30mm push button switch?

30mm push button types include 30mm anti-vandal switch, 30mm piezo switch..

30mm piezo switches are usually made of durable plastic or metal that resists damage. 30mm vandal-resistant switches are mainly constructed with a metal casing, PBT base, silver contacts, and a metal mechanism. They are easy to clean and resistant to hammer damage.

The functionality of push buttons varies with each size.

Furthermore, the head of a 30mm push button switch is ergonomically designed for efficient operation by finger or hand.

4. What are the applications of 30mm push button switch?

The 30mm push button has a wide range of applications.

• They can be used to switch bubbles on and off in spas.
• They can be used to complete circuits and provide waterproofing. Doorbell button..
• They can be used as switches in stations.
• They can be used as PC push buttons.
• These 30mm push button switches can be used in shower systems at gyms, sports clubs, or schools to turn water on and off.
• They can be used like Lighted push buttons..
• They can be used in public toilets for flushing.

30mm Push Button Switch Application for Door Access.

5. Who will use 30mm push button switch?

Primarily, heavy-duty industry companies purchase 30mm push button switches for their large machinery. The actuator is large, and for users with larger fingers, a bigger actuator provides a much better pressing feel.

6. How does a 30mm pushbutton switch work?

From the wiring diagram, you can see how a 30mm push button switch works. As observed, even though 30mm is considered a large size in the push button switch family, it remains a sealed small control device.

When connected, the internal components link together to allow current to pass.

When disconnected, the contact is interrupted by pressing again, and the current ceases to flow.

7. How do you test a 30mm push button switch?

You need to follow a complete procedure for testing a 30mm push button switch. Some necessary steps are:

• Turn on the multimeter and verify the ohmmeter's operation.
• Insert the leads into the meter. To verify the ohmmeter, touch the probe tips together.
• Connect the red lead to a terminal on the 30mm switch.
• Turn the IP68 push button switch to the off position.
• Operate it repeatedly, turning it on and off for a period of time.
• If it functions, then the 30mm push button switch is working without any issues.

8. What are the components of a 30mm push button switch?

The components of a 30mm push button switch are:

• Actuator
• Stationary contacts
• Grooves
• Spring
• PBT base
• Nuts and O-ring

9. Is a 30mm push button switch necessary in appliances?

The 30mm push button switch has multiple uses. A control switch is mandatory in every appliance as it governs the entire device.

The 30mm switch is typically used in control circuits for turning functions on and off.

It allows manual sending of control signals to relays, electromagnetic starters, or control contactors in electrical automatic control circuits.

10. What is a normally open 30mm push button switch?

A Normally open push button Is abbreviated as NO push button.

Its default state is open, meaning it does not establish any electrical connection within the circuit.

The NO 30mm push button switch is generally the most common type in circuits and devices.

After pressing this button, an electrical connection is established and it responds.

30mm push button switch lathe machine

11. What is NC 30mm push button switch?

Unlike the NO push button, this NC push button switch (normally closed) is closed in a default state, which means it has electrical contact with the circuit.

As the button is pressed, it opens, and the circuit is broken, meaning the switch is no longer electrically connected.

12. What are the differences between the momentary and latching function of the 30mm push button switch?

Momentary 30mm push button switch

Continuous compression is required for the momentary button switch.

As long as pressure is applied to the switch, it will continue to operate.

Once pressure is immediately removed, the 30mm push button switch will turn off.

Consider the example of an electric drill.

Industrial momentary push button switches have broad applications. One example is in the medical industry. Telephone operators also use them for communication. A momentary switch is actuated only when pressed—like a doorbell.

Latching 30mm push button switch

On the other hand, a latching button switch begins operation when turned on and continues working until it is switched off.

This means it does not require continuous pressure from the user.

The application of lockable push button switches is comprehensive, commonly found in residential settings such as central heating switches, light switches, or stereo controls.

They may also be observed in various industries, such as spa operations, etc.

13. What is a double-acting 30mm push button switch?

Double-acting 30mm push button switches contain 2 normally open contacts and 2 normally closed contacts.

When connecting a 30mm push button switch in a circuit, ensure the wires are connected to the correct set of contacts.

14. What is a maintained 30mm push button switch?

A maintained 30mm push button switch essentially refers to a latching switch. The key and noticeable difference is whether the actuator returns. The actuator remains depressed and locked due to internal interlocks. This position changes when actuated again.

15. How do you install a 30mm push button switch on a panel board?

Follow the steps below to easily install a 30mm button.

• Using a hole cutter with approximately a 30mm die, drill a hole on the panel of about 30mm, with a maximum of around 30.5mm.
• Insert the switch into the panel board. Check if the hole allows easy insertion.
• Place the O-ring at the back until it rests against the panel.
• Tighten the nut onto the panel board.

This method applies to any 30mm push button switch installation, as well as buttons of other sizes.

Control station box for push button switches

16. Can you easily find 30mm push button switches in the market?

Yes, 30mm push button switches can be easily found in local markets. They vary in models and functions, so it is important to understand your device or equipment well to select a suitable 30mm push button switch.

17. If 30mm push button switches are unavailable, what alternatives can you choose?

If the shop is out of stock for 30mm push button switches, you may choose smaller sizes such as 25mm or 22mm, which offer the same functions.

18. Are 30mm push button switches illuminated?

Yes, 30mm push button switches can be illuminated. Options include ring illumination or dot illumination. Piezo switches offer large or thin ring options for selection. With six colors available, including recombined bicolored or tricolored options, you can choose based on your requirements.

19. Is a 30mm push button switch a sensor?

Yes, a 30mm push button switch can be a sensor switch, such as a 30mm piezo switch. It operates by applying external force rather than physical movement to produce the switching element output.

You still need to press the actuator with a force of 2N to 6N to activate the piezo switch.

It offers the following advantages:

• The metal finish shape is easy to clean.
• A wide range of LED options provides a refined modern appearance.
• The fully sealed design makes the switch waterproof. If you are concerned about dust, debris, or moisture intrusion, piezo switches may be the best choice.
• Robust momentary and latching push button switches.

20. How to wire a 30mm push button switch?

For this, you will need jumper wires, a push button, a resistor, and a breadboard.

Connect a wire, known as a jumper, to a volt pin of any size.

A 5-volt connection is most preferable, but you can adjust the voltage according to your 30mm push button switch specifications.

Connect the other side of the 30mm push button switch to pin 2 of the jumper wire.

The 30mm push button switch will only work when both sides are connected.

Now connect the resistor on the breadboard.

The side to be connected to the resistor should be pin 2 of the jumper wire.

Wiring a 12V push button switch is straightforward and can be done at home.

For wiring a 12V push button switch, there are two terminals: positive and negative for 12 volts.

Connect the positive and negative terminals of the 12V battery to the two wires of the 30mm push button switch.

21. How do I know if my 30mm push button switch is working?

To determine whether your 30mm push button switch is functioning:.

Connect the 30mm push button switch through an electrical circuit and test its operation.

Before shipping, all 30mm push button switches undergo quality testing. If the current and voltage do not exceed the switch’s maximum rating, the switch will not be damaged.

22. Is it difficult or easy to select a 30mm push button switch?

Based on its innovative designs, time-tested durability, and reliability, you can confidently select it.

When selecting, keep the following aspects in mind:

• The function: latching or momentary.
• Universal color caps reduce inventory and offer greater flexibility.
• Finger-safe contacts and light modules for safety.
• High silver contact for ease of use.
• Pin terminals and wiring mounting for rapid installation.

23. Are 30mm push button switches used in industry?

30mm push button switches are used in industrial applications due to the higher degree of functionality they offer compared to other switches.

Unlike a standard switch that provides a single specific function, these pushbuttons can be linked to other mechanical applications through linkages.

24. Can a 30mm push button switch be used as an emergency push button?

Yes, they can be used as emergency push buttons..

The purpose of the emergency push button is to rapidly stop machinery when there is a risk of damage or when the workflow needs to be halted.

These are fail-safe control switches that protect both machinery and the personnel operating it.

25. What are the prices of 30mm push button switches?

There are varying prices for 30mm push button switches.

For 30mm waterproof latching types, prices are higher than for momentary types.

If you choose 30mm piezo switches or capacitive switches, the unit price is higher than that of anti-vandal switches due to their more complex craftsmanship.

26. Can a 30mm push button switch have a square head?

Yes, it can have a square head. Its diaphragm seal provides complete protection against liquids, particles, and corrosive agents. If you prefer a square head or another shape, advanced lathe technology is available to accommodate your design.

30mm push button switches do not require lubricating oil for smooth operation.

Their design complies with international standards.

30mm push button switches are designed to meet signaling, control, and electrical command requirements across a wide range of industrial applications.

For the harshest industrial environments worldwide, more styles and sizes are available to meet the most demanding specifications.

27. What does a 30mm push button switch guard do?

A 30mm push button switch guard serves as a protective cover for the 30mm push button.

The guard material can be plastic or metal, and sizes vary.

For plastic materials, it can be easily installed from the front panel. It protects the 30mm push button switch from dust and heavy rain. You can also install the 30mm push button switch in a plastic switch box for additional protection.

28. What are the electrical specifications for piezoelectric 30mm push button switches?

Maximum current/voltage rating with resistive load:

Function NO: Standard 200mA 24VAC/DC, 1A 24VAC/DC, or as requested.

Function NC: Standard maximum 600mA 24VAC/DC.

29. Is a 30mm push button switch ignition-safe?

Cars inadvertently left running can lead to carbon monoxide poisoning.

In a striking example of the law of unintended consequences, a popular automotive convenience feature, push-button start, can lead to accidental death from carbon monoxide poisoning.

30. Can you convert a car to a 30mm push button switch start?

Yes, you can convert your car to a 30mm push button switch start.

By adding a keyless ignition, you can achieve this by replacing hot wires with a switch.

In a hot-wiring process, two wires touch each other to produce ignition.

However, with a push-button start, you will use a switch instead.

31. Is a 30mm push button switch rugged?

30mm push button switches are heavy-duty and rugged in construction due to their metal materials, such as stainless steel 304, stainless steel 316L, or anodized aluminum. They are built for rugged industrial use.

They feature a completely encapsulated IP69K construction for high-pressure wash-down environments, with models offering either latching or momentary outputs.

They can be operated with gloves and are optimal for switching higher currents. The coating provides a flat, black, smooth, consistent, and corrosion-resistant surface.

30mm push button switches are made of metallic materials that are not easily broken.

32. What are the key points of 30mm push button switch assembly?

A 30mm push button switch consists of the following assembly parts:

• Head
• Seal
• Tightening nut
• Fixing base
• Light block
• Contact block

30mm push button switch piezo type parts.

33. Can a cover be installed on a 30mm push button switch to protect against heavy rain?

Yes, a 30mm push button cover provides additional protection. While a piezo switch can resist rain, stainless steel anti-vandal switches with an IP67 rating are better equipped. Certainly, the cover will also keep the switch dust-free. Why not? It is a better choice.

The cover is suitable for 30mm push buttons. It protects the button from accidental collisions and misuse.

It can be installed from the front of the 30mm push button switch and is easy to mount. The cover is inexpensive. When someone misuses it, they have a few seconds to reconsider, making it a protective measure.

34. What are the dimensions of a 30mm push button switch?

The mounting hole size for a 30mm push button switch is 30mm. The switch rating is 5A/250VAC.

Switch combinations are 1NO1NC/2NO2NC. Operation types include resettable and self-locking.

The head shape is flat, and the enclosure material is nickel-plated brass and stainless steel. The protection rating is IP67, IK10.

Dielectric strength is 1,000 VAC rms and 1,500 VAC rms for metal materials.

The thickness and high purity of the silver contacts ensure the waterproof push button switch operates reliably in bad weather or harsh environments.

The dimensions of a 30mm piezo switch are the same as above, with a switch rating of 200mA/24VAC/DC.

Is a socket connector included with the 30mm push button switch?

Currently, 30mm push button switches do not come with socket connectors. However, you can obtain them with terminal wiring completed. By selecting the required wire sizes and colors, plus a small additional assembly fee, you will receive a completed unit.

35. What happens if a 30mm pushbutton switch start fails?

 This is an effective method to verify whether electrical power is present. If power is confirmed, the push button may be faulty. Remove it and conduct tests. If damaged, replacement units must be purchased. For 30mm piezo switches, the lifespan is exceptionally long. They are not prone to damage under correct current and voltage conditions.

For 30mm stainless steel push button switches, the switch rating is accurate, with an electrical lifespan exceeding 100,000 cycles. There is no need for concern; they can be used freely.

36. What type of switch is a 30mm push button switch?

A 30mm push button switch is a simple switch used to control specific functions of a machine or process.

30mm push button switches are typically constructed from durable materials, most commonly plastic or metal.

The surface is usually flat or contoured to accommodate a human finger or hand, allowing it to be easily pressed or pushed.

A 30mm push button switch can operate with either momentary or latching functionality.

It is utilized in calculators, kitchen appliances, push-button telephones, and various other mechanical and electronic devices for both residential and commercial applications.

37. How to connect a 30mm push button switch with a horn?

Required items:.

• Two lengths of wire
• A 12V push button switch
• A charged 12V battery

Connect one wire from any part of the horn (ground) to the negative (-) terminal of the 12V battery.

Connect the other wire to the electrical connection terminal on the horn.

The 30mm push button switch can be connected separately to both wires.

The horn can also be set on the negative post, and a wire from the positive post can be touched to the horn's electrical connection to test it.

38. Is it easy to find a PDF for a 30mm push button switch?

Yes, you can find PDF documents regarding technical data, drawings, switch ratings, installation requirements, etc., on the website. The PDF file for the 30mm push button switch is very detailed.

39. How many types of actuators are available for the 30mm push button switch?

Typically, you can choose from flat heads with heights of 1.3mm, 3.0mm, and 4.5mm; chamfered heads with heights of 3.0mm and 4.5mm; and concave heads. Custom head designs are also available upon request.

40. Is maintenance required for a 30mm push button switch?

Maintenance for the 30mm push button switch is not a concern. The surface is made of metal material; simply wipe it with a cloth. It is very straightforward.

41. What is the warranty for a 30mm push button switch?

The warranty for a 30mm push button switch is one year, in accordance with electrical standards.

This covers all about the 30mm push button switch. If you have any further questions, you can contact us..