12V red momentary push button switch with SPST normally-closed operation. Designed for control circuits, safety functions, signalling applications, and low-current automotive or equipment installations requiring push-to-break functionality.
What it is
The E Auto Round M-Head Red Push Button Switch is a momentary push button switch designed for 12VDC control and signalling applications. Featuring SPST-NC (Single Pole Single Throw – Normally Closed) operation, the circuit remains closed under normal conditions and opens only while the button is pressed.
This Push-To-Break / Return-To-Make (PTB/RTM) configuration makes the switch suitable for specialised control systems, safety circuits, interlocks, and applications where temporary circuit interruption is required.
Its compact round design and red actuator provide clear visual identification, making it suitable for control panels, dashboards, and equipment installations.
Use Cases / Applications
Suitable for a variety of low-current control applications, including:
- Automotive control circuits
- Safety interlock systems
- Control panels
- Industrial equipment controls
- Dashboard-mounted controls
- Signal interruption circuits
- Test and monitoring equipment
- Machinery control systems
- Custom electronic projects
- Low-current switching applications
Its normally-closed operation makes it particularly useful in circuits that require interruption rather than activation when the button is pressed.
Key Benefits
- SPST normally-closed (NC) switching configuration
- Push-To-Break / Return-To-Make operation
- Compact round panel-mount design
- Red actuator for easy visual identification
- Reliable momentary switching action
- Suitable for low-current control applications
- Solder lug terminals provide secure electrical connections
- Ideal for automotive, industrial, and electronic control systems
Normally-closed switches are commonly used in safety and control applications because they allow a circuit to operate continuously until deliberate interruption is required.
Safety Compliance
- Rated for 12VDC operation
- Rated load capacity: 5A @ 12VDC
- Suitable for low-voltage control and signalling circuits
- Install according to electrical safety and wiring requirements
Always disconnect power before installation and ensure all wiring connections are properly insulated.
Brand Reputation
E Auto products are designed to provide dependable automotive and electrical control solutions, offering reliable performance for maintenance, replacement, and custom installation applications.
Terminology:
Normally Open (NO):
A push button where the circuit is broken when the button is not pressed and closed (circuit connected) when pressed.
Normally Closed (NC):
A push button where the circuit is closed (circuit connected) when the button is not pressed and broken (circuit open) when pressed.
SPST: Single Pole Single Throw
SPDT: Single Pole Double Throw
DPST: Double Pole Single Throw
DPDT: Double Pole Double Throw
PTM/RTB: Push To Make/Release To Break
These terms refer to the number of poles and throws in the switch, describing the electrical circuitry.
Specification
- Function: Push Button Momentary
- Dimensions: 30x18mm
- Color: Black | Red
- Illumination: No
- Material: Polycarbonate (PC)
- Mounting Type: Round Through Hole
- Amps: 125A
- Circuit: SPST-NC
- Load Capacity: 12VDC,5A
- Pole/Contacts: 2
- Switch Positions: Off/On (PTB/RTM)
- Voltage: 12VDC
- Throw/Positions: 1
- Termination Style:Â Solder Lug
- Weatherproof: No
- Brand: E Auto
- Warranty: Yes
- Nationwide Shipping
Auto Push Button Switches 12V, Auto Switches, Automotive
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