key specifications of metal push button swich to check before ordering one?

Key specifications of metal push button swich to check before ordering one:

if you wanna choose the right metal push button switch for your products, you need to consider the panel mount size, switch function, led optional as well as termination request.

1. Mounting & Size: there has several mount panel options for your design, and different head shape is suitable for your product.

· Panel Cut-Out Diameter: The hole size needed. Common are 12mm, 16mm, 19mm, and 22mm. Always measure your panel first.
· Head Shape: High head (protruding), flat head (flush), or domed.

2. Electrical Specs

· Switch Function: Most critical. Momentary acts like a keyboard key (on only while pressed), used for signaling. Latching (push-on, push-off) is for power control, like a light switch.
· Contact Configuration: Usually SPST (single pole, single throw) for simple on/off. For controlling two circuits, look for SPDT.
· Voltage & Current Rating: Must match your load. Running a 12V 3A motor is very different from a 24V signal to a controller.

3. LED & Illumination: there has multiple led color optionl, such as red/ white/blue as well as bi-color led.

· LED Voltage: Common options are 5V, 12V, 24V, and 220V. The switch's LED voltage must match your system's supply. A resistor may be needed for some 5-12V types.
· Ring vs. Dot Illumination: A full ring light is common for style, a dot for a more classic indicator.

4. Wiring & Termination

· Screw Terminals: The most common type, allows tool-free connection, great for DIY.
· Solder Lugs: More permanent and vibration-resistant, preferred in automotive or industrial control panels.
· Wire Leads: Pre-wired, very fast to install.