Pushbutton switches and selector switches are both widely used in industrial control panels, machinery, and electrical equipment. While they may look similar and are often installed on the same control panel, they are designed for different types of control operations.
The main difference is simple: a pushbutton switch is operated by pressing, while a selector switch is operated by turning to select a specific position.
Understanding the difference can help you choose the right switch for functions such as starting equipment, stopping a machine, resetting a system, or selecting between operating modes.
What Is a Pushbutton Switch?
A pushbutton switch is operated by pressing an actuator to open or close an electrical circuit. Depending on its design, the switch may return to its original position after being released or remain in the selected state.
Pushbutton switches are commonly used for functions that require quick and direct operation, including:
- Start
- Stop
- Reset
- Emergency stop
- Temporary machine operation
For example, a momentary pushbutton switch can be used to send a temporary signal when pressed, while a maintained pushbutton switch can remain in its selected position until it is pressed again.
What Is a Selector Switch?
A selector switch is operated by turning a knob or lever to select between two or more positions. Each position can represent a different circuit condition or operating mode.
Selector switches are commonly used for:
- Auto/Manual selection
- Forward/Reverse control
- Local/Remote control
- High/Low settings
- Operating mode selection
Unlike a momentary pushbutton switch, a selector switch typically remains in the selected position until the operator turns it to another position.
Pushbutton Switch vs Selector Switch: Key Differences
| Feature | Pushbutton Switch | Selector Switch |
| Operation | Press | Turn |
| Typical Function | Start, Stop, Reset | Mode or function selection |
| Positions | Usually 1 or 2 states | Commonly 2 or 3 positions |
| Operation Type | Momentary or maintained | Usually maintained |
| Best For | Quick control actions | Selecting operating modes |
| Typical Applications | Start/Stop stations, control panels | Auto/Manual, Forward/Reverse selection |
When Should You Use a Pushbutton Switch?
A pushbutton switch is usually the better choice when an operator needs to quickly activate a specific function.
Choose a pushbutton switch for applications such as:
- Starting or stopping equipment
- Resetting a machine or control system
- Sending a temporary electrical signal
- Activating a function manually
- Emergency control applications
Pushbutton switches are especially common on industrial control panels where operators need fast and simple access to frequently used functions.
When Should You Use a Selector Switch?
A selector switch is more suitable when the operator needs to choose between different operating modes and keep the selected mode active.
Choose a selector switch when you need to select:
- Auto or Manual mode
- Forward or Reverse operation
- Local or Remote control
- Different machine operating modes
- Multiple system settings
Because the switch remains in the selected position, it provides a clear visual indication of the current operating mode.
Pushbutton Switch vs Selector Switch in Industrial Control Panels
Pushbutton switches and selector switches are often used together rather than as alternatives.
For example, a typical industrial control panel may use:
- Pushbutton Switch:Start, Stop and Reset
- Selector Switch:Auto/Manual mode selection
- Pushbutton Switch:Emergency control
- Selector Switch:Forward/Reverse selection
In this type of application, each switch performs a different function and helps provide clear and efficient machine control.
Which One Should You Choose?
Choose a Pushbutton Switch if:
- You need a quick press operation.
- The function is Start, Stop, or Reset.
- Temporary or momentary activation is required.
- The operator needs to frequently activate the function.
Choose a Selector Switch if:
- You need to select between two or more operating modes.
- The selected position needs to remain active.
- You need functions such as Auto/Manual or Forward/Reverse.
- The operator needs a clear indication of the selected mode.
Frequently Asked Questions
1. Can a selector switch replace a pushbutton switch?
Not always. Pushbutton switches and selector switches are designed for different types of control. A pushbutton switch is typically used for quick actions such as Start, Stop, or Reset, while a selector switch is used to select and maintain an operating mode, such as Auto/Manual or Forward/Reverse.
Before replacing one with another, make sure the required operating function, contact configuration, number of positions, and electrical ratings are compatible with the application.
2. What is the difference between a momentary and a maintained pushbutton switch?
A momentary pushbutton switch only changes the circuit state while the button is being pressed. Once released, it returns to its original position.
A maintained pushbutton switch remains in its selected state after being pressed until it is pressed again or reset, depending on the switch design.
3. Are selector switches always maintained switches?
Most selector switches are designed to maintain the selected position until the operator turns the switch to another position. However, some selector switches may use spring-return or momentary positions.
Always check the switch’s operating mechanism and position configuration before selecting a model.
4. How many positions can a selector switch have?
Selector switches commonly have two or three positions, such as Auto/Manual or Forward/Off/Reverse. Some models are available with additional positions for more complex control functions.
The number of positions should be selected according to the number of operating modes required by the equipment.
5. Can pushbutton switches and selector switches be used together?
Yes. They are commonly used together in industrial control panels because they perform different functions.
For example, pushbutton switches may be used for Start, Stop, and Reset functions, while a selector switch can be used to choose between Auto and Manual operation.
6. What should I consider when choosing a pushbutton or selector switch?
Important factors include:
- Operating function
- Momentary or maintained operation
- Number of positions
- Contact configuration
- Mounting hole size
- Voltage and current ratings
- Illumination requirements
- Environmental and protection requirements
Choosing the right switch depends on both the required control function and the electrical requirements of the application.
Conclusion
Pushbutton switches and selector switches are both important components in industrial control systems, but they are designed for different purposes.
A pushbutton switch is best for quick actions such as starting, stopping, and resetting equipment. A selector switch, however, is better suited for selecting and maintaining different operating modes.
When choosing between them, consider how the operator needs to interact with the equipment and whether the function requires a temporary action or a maintained position.
Find the Right Control Switch at LCSC
LCSC also offers a wide selection of control switches for industrial control panels, machinery, automation equipment, electrical control systems, and other switching applications. Compare products by key specifications such as switch type, number of positions, contact configuration, operating mode, mounting size, voltage rating, current rating, and environmental requirements to find a suitable solution for your application.
Explore our pushbutton switches and selector switches to compare available operating mechanisms, configurations, specifications, and product options for functions such as Start, Stop, Reset, Auto/Manual, and Forward/Reverse control.
