125A momentary push button ignition switch designed for high-current 12VDC automotive and electrical applications. Featuring a durable black polycarbonate body, screw terminal connections, and reliable SPST-NO operation for starter and ignition control systems.
What it is
The E Auto Round Black Push Button Ignition Switch is a heavy-duty 125A momentary switch designed for 12VDC electrical systems. Built with a durable polycarbonate (PC) housing, this switch provides reliable momentary contact operation, making it ideal for ignition, starter, and control circuit applications.
Configured as an SPST-NO (Single Pole Single Throw – Normally Open) switch, it only completes the circuit while the button is actively pressed, automatically returning to its default position when released.
Its round through-hole mounting design allows for secure installation in vehicle dashboards, control panels, machinery, and custom electrical systems.
Use Cases / Applications
Suitable for a wide range of automotive and electrical applications, including:
- Vehicle starter systems
- Ignition control circuits
- Automotive dashboard installations
- Marine electrical systems
- Off-road vehicles and utility vehicles
- Machinery control panels
- Custom electrical projects
- 12VDC switching applications
Its high current rating makes it suitable for demanding applications requiring dependable switching performance.
Key Benefits
- Heavy-duty 125A current rating
- Reliable momentary push-button operation
- Durable polycarbonate construction for long service life
- SPST-NO configuration for ignition and starter applications
- Secure screw terminal connections
- Compact round design for easy panel installation
- Suitable for automotive, marine, and industrial applications
- Simple, dependable switching solution for 12VDC systems
Momentary switches are commonly used in starter and ignition circuits because they only remain active while pressure is applied, helping prevent unintended continuous operation.
Safety Compliance
- Rated for 12VDC operation
- 125A load capacity
- Designed for low-voltage DC applications
- Install according to electrical system requirements and manufacturer recommendations
- Ensure wiring and circuit protection devices are correctly sized for the application
E Auto products are designed for dependable automotive and electrical system performance, providing practical solutions for vehicle, marine, and general-purpose switching 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: 47.5x26mm
- Color: Black
- Illumination: No
- Material: Polycarbonate (PC)
- Mounting Type: Round Through Hole
- Amps: 125A
- Circuit: SPST-NO
- Load Capacity:Â 12VDC,125A
- Pole/Contacts: 2
- Switch Positions:
On/Off (PTM/RTB)
- Voltage: 12VDC
- Throw/Positions: 1
- Termination Style:
Screw Connector
- Weatherproof: No
- Brand: E Auto
- Warranty: Yes
- Nationwide Shipping
Auto Push Button Switches 12V, Auto Switches, Automotive
Good Quality