Limit Switch

Your Professional Limit Switch Supplier

We are a manufacturer of all kinds of pushbutton switches. From the factory - direct to the hands of consumers, here we save (total distribution-wholesalers-stores) and other channels, for you to provide a simple direct and effective supply! Besides our existing molded products, YongYuan also can production of products according to the drawings or samples from our customers.

Why Choose Us

24-Hour Service

Our dedicated 24-hour online support ensures prompt responses, providing you with an excellent shopping experience. Feel free to reach out with any questions at any time.

Professional technical support

We have an experienced technical team that can provide comprehensive technical support from product design and process optimization to maintenance.

Our Certificate

Under the strict management of ISO9001 quality system, environmental system ISO14001, the company's products have passed a series of international standard certificates such as UL, VDE, CCC, CE (LVD), CE (EMC).

Customized solutions

Every customer is unique, which is why we offer tailored solutions to meet your specific requirements. We offer technical support that is second to none.We take pride in our rapid response and flexibility to ensure your needs are met.

Advantages of Limit Switches

Precision

Limit switches provide precise control and repeatability, making them ideal for applications that require accurate position detection.

Wide Range of Applications

From simple home automation systems to complex industrial machinery, limit switches can be adapted to suit a variety of needs.

High Reliability

Limit switches are highly reliable and capable of operating in harsh conditions. Their robust construction ensures long operational life, even in environments with extreme temperatures, dust, or moisture.

Cost-Effectiveness

Compared to other types of sensors, limit switches are relatively inexpensive and easy to install. This makes them a popular choice in industrial applications where cost is a significant consideration.

Types of Limit Switches

Plunger-Type Limit Switch

Features a plunger actuator that is pressed when the target object makes contact. These are suitable for precise position detection.

Lever-Type Limit Switch

Contains a lever arm with a roller or ball on its end. When the moving part touches the lever, the switch is actuated. This type is commonly used in conveyor systems or automated assembly lines.

Rotary Limit Switch

Utilizes a rotating actuator that is turned by the movement of machinery parts. It is typically employed in applications where rotational motion is involved, such as cranes or hoisting devices.

Proximity Limit Switch

A non-contact switch that detects objects using electromagnetic fields or light (optical). It is widely used in environments where cleanliness or non-intrusive sensing is required.

Product Description

Operating Speed	0.1mm-1m/s
Operating Frequency	Mechanical:600 times/min
Operating Frequency	Electrical:30 times/min
Insulation Resistance	100MΩ (Above) DC500V
Contact Resistance	25mΩ （initial value)
Withstand Voltage	Non-connection wire:1000VAC
Withstand Voltage	Every terminal: 1500VAC
Life	Electrical: 100,000 times above
Life	Mechanical: 1,000,000 times above
Operating Temperature	-25-80℃
Operating Humidity	＜85%

components of Limit Switch

Actuator

This is the limit switch section that would make contact with the object.

Head

This section of the limit switch would convert the actuator movement to the contact movement. So if the actuator is moved properly then the switch contact would operate according to it.

Contact block

This part of the limit switch would cover the electrical contact element of the switch. Mostly it has two or four contact pairs.

Terminal block

This part has the screw terminations, and this is the place where the switch and the rest of the control circuits make the electrical connections.

Switch body

This section of the limit switch would cover the contact and terminal block.

Base

This section of the limit switch would house the terminal block in a plug-in switch.

How a limit switch works

Physical contact

An object or machine part contacts an actuator on the limit switch.
Switch activation

This contact mechanically triggers an electrical switch.
Electrical signal

Depending on its configuration, the switch either opens or closes an electrical circuit.
Control or indication

This signal controls machinery, provides safety interlocks, or counts objects.

Applications of Limit Switches

Automated Production Lines: In manufacturing, limit switches are essential for controlling automated machinery. They detect the position of mechanical components, ensuring the safe and efficient operation of processes like assembly, packaging, and material handling.

Safety Mechanisms in Machines: Limit switches are often used as safety devices to prevent machinery from exceeding certain operating limits.

Elevator Systems: Limit switches play a critical role in the control and safety of elevators. They detect the position of the elevator car, ensuring that it stops accurately at each floor and that doors operate correctly without collisions.

Automated Doors and Gates: Many automatic doors, gates, and barriers use limit switches to detect the open or closed position, controlling motorized systems and ensuring that the door does not overextend or remain open when it should be closed.

Smart Home Applications: Limit switches are used in various smart home devices such as automated blinds, garage doors, and home security systems. These switches can detect whether a door or window is fully opened or closed and provide signals to the control system to initiate the appropriate response.

Agricultural and Heavy Machinery: In equipment such as tractors, harvesters, and mining machinery, limit switches are often used to monitor the movement of parts like arms, blades, or lifts, ensuring safe operation in challenging environments.

Robotics: In robotics, limit switches ensure that robot arms and other components operate within safe, predefined boundaries. They can be used to limit the range of motion of a robotic arm, preventing mechanical overload or collisions.

FAQ

Q: What are the advantages of limit switches?

A: These switches are crucial for heavy-duty tasks, such as in lifts and commercial vehicle controls. They serve as sensors that record distance, measure temperature, or even protect circuits from exceeding limits.

Q: What is the purpose of a limit switch?

A: In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system, as a safety interlock, or as a counter enumerating objects passing a point.

Q: Why are limit switches required?

A: One of the primary functions of limit switches is to detect when machinery or components reach specific positions. This capability is essential for: Ensuring production line components are correctly aligned. Controlling the movement of robotic arms or conveyor systems.

Q: How long does a limit switch last?

A: Limit switches typically last 10 to 15 years, but their lifespan can vary depending on the furnace's usage and how well it's maintained. Regular servicing can help extend the life of the limit switch and other furnace components.

Q: Are limit switches AC or DC?

A: Limit switches can operate on either AC (alternating current) or DC (direct current) power, depending on the application and design.

We're professional limit switch manufacturers in China, providing customized limit switch for sale. Feel free to wholesale limit switch and get quotation from our factory.