Collection: Auto Electrical Push Button Switches (0)

Push button switches for commercial vehicle electrical systems

Push button switches in commercial vehicle applications serve a different set of uses than toggle switches. Momentary push buttons are used where a brief contact is needed - horn circuits, reset functions, manual override controls. Latching push buttons are used where a maintained on-off state is required from a button-style actuator rather than a lever.

For cab panel installations, illuminated push button switches provide a visible on-state indication without requiring a separate indicator lamp, which simplifies panel wiring and reduces the number of components. Most illuminated push buttons use LED illumination, which is more durable than incandescent and draws less current on 24V circuits.

Specification follows the same rules as toggle switches: confirm voltage rating, current rating for direct-switching applications - or use a relay for higher loads - and IP rating for the mounting location. Panel cutout size also needs to match the switch body diameter; most automotive push buttons use a standard 16mm, 19mm, or 22mm panel cutout.

Frequently asked questions

What is the difference between a momentary and a latching push button switch?

A momentary push button makes contact only while it is held - releasing it opens the circuit. A latching push button toggles: one press closes the circuit, the next press opens it. For horn, reset, and brief-contact applications, momentary is correct. For on-off control of a load that must remain active after the button is released, use a latching type.

What panel cutout size do I need for automotive push button switches?

The most common automotive push button sizes are 16mm, 19mm, and 22mm panel cutout diameters. Check the specific switch specification for the required panel cutout before drilling. Mounting depth also matters - confirm the switch body depth will clear any components behind the panel.

Are illuminated push button switches harder to wire than non-illuminated?

Illuminated push buttons have an additional connection for the lamp circuit, which in most cases is connected to the switched output so the lamp illuminates when the circuit is active. The wiring is straightforward; confirm the illumination circuit connections from the product datasheet before installation.

What voltage are push button switches rated for in commercial vehicle use?

Most automotive push button switches are dual-rated for 12V and 24V, with different current ratings at each voltage. Check the switch specification to confirm it is rated for the system voltage you are installing into. Some budget switches are 12V only and are not suitable for 24V commercial vehicle circuits.