The PBS-11A 12mm Self-Locking Push Button Switch is a compact, durable ON/OFF switch designed for electronic circuits, control panels, DIY projects, and industrial applications.
Featuring a self-locking (latching) mechanism, the switch remains in its activated position after being pressed. Pressing the button again releases the mechanism and returns the switch to its original OFF position.
Its red round button, 2-pin SPST contact configuration, and 12mm panel-mount design make it suitable for Arduino projects, robotics, electronic equipment, and manual power control applications.
Key Features
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Self-Locking Operation: Press once to turn ON and press again to turn OFF.
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Latching Mechanism: Maintains its switching state without continuously holding the button.
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SPST Contact Configuration: Single Pole Single Throw switching.
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2-Pin Connection: Simple electrical wiring.
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12mm Mounting Hole: Suitable for compact control panels and enclosures.
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Red Round Button: Easy identification and operation.
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Panel-Mount Design: Threaded body with mounting nut for secure installation.
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Rated 125V AC, 3A: Suitable for loads within the specified electrical rating.
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Compact Plastic Housing: Lightweight construction for electronic projects.
Technical Specifications
| Parameter |
Specification |
| Product Model |
PBS-11A |
| Product Type |
Self-Locking Push Button Switch |
| Switch Operation |
Latching ON/OFF |
| Contact Configuration |
SPST |
| Operation Mode |
ON–OFF |
| Rated Voltage |
125V AC |
| Rated Current |
3A |
| Number of Terminals |
2 |
| Mounting Hole Diameter |
12mm (0.47") |
| Button Diameter |
12mm (0.47") |
| Overall Dimensions |
17 × 21mm (Diameter × Height) |
| Housing Material |
Plastic |
| Button Color |
Red |
| Mounting Type |
Panel Mount |
| Connection Type |
Solder Terminals |
| Return Mechanism |
Push-to-Lock / Push-to-Release |
Pin Configuration
| Terminal |
Description |
| Pin 1 |
Switch Contact |
| Pin 2 |
Switch Contact |
Switch Operation:
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First Press: Contacts close and remain connected (ON).
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Second Press: Contacts open and remain disconnected (OFF).
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Power Control: Can maintain the ON/OFF state without continuously pressing the button.
Arduino Connection Example
The PBS-11A can be connected to an Arduino digital input to provide a maintained ON/OFF control signal.
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Pin 1: Connect to Arduino GND.
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Pin 2: Connect to an Arduino digital input, such as D2.
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Configure the input using
INPUT_PULLUP.
When the switch is ON, the Arduino reads LOW. When the switch is OFF, the Arduino reads HIGH.
Applications
- Arduino and ESP32 Projects
- DIY Electronics
- Robotics Control Panels
- Electronic Equipment ON/OFF Control
- Industrial Control Panels
- Home Automation Projects
- Electronic Enclosures
- Educational Electronics
- Manual Switching Circuits
- Low-Power Device Control
Important Notes
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This is a self-locking (latching) switch, not a momentary push button.
- Press once to activate and press again to deactivate.
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The switch is rated at 125V AC, 3A according to the supplied product specifications.
- The DC switching rating is not specified and should not be assumed to be the same as the AC rating.
- For high-current devices, motors, or inductive loads, use a suitable relay or switching circuit.
- Ensure proper insulation and electrical safety when switching mains voltage.
Package Includes
- 1 × PBS-11A 12mm Red Self-Locking Push Button Switch
- 1 × Mounting Nut
- 1 × Lock Washer
