Sanwa OBS-30A Snap In Arcade Button

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Product Code: OBS-30A

The Sanwa OBS-30A button is very similar to the Sanwa OBSF-30 button. The main difference is that this button has a Sanwa OBS-M-1 (OMRON) microswitch and holder fitted to the body of the button. The terminals on the OBS-M-1 microswitch are 4.8mm, compared to the Sanwa OBSF-30 button, which has built in 2.8mm terminals. This is a snap in type button. This button has a plastic clipper on each side, once mounted into a 30mm mounting hole, these clippers lock the button in place.

This button is available in a wide range of colour options, the same colours as the popular Sanwa OBSF-30 button.

Colour Options:
Red, Vermillion, Blue, Dark Blue, Green, Violet, Orange, White, Pink, Dark Grey, Black & Yellow.

This button is ideal for those customers who have an existing machine or project that already has 4.8mm wiring installed and they don’t want to have to change the wiring for the usual 2.8mm that Sanwa buttons usually require. This button combines the best of both worlds! You can use a high quality Sanwa branded button, with the convenience of being able to use popular 4.8mm crimped wires on a standard 3 pronged, high quality Omron microswitch.

The use of this button is not just limited to fight sticks or arcade machines. This button is also a good choice for various commercial or academic projects that require quality and reliability.

The OBS-30A button requires a 30mm mounting hole and a maximum mounting depth of up to 4mm. These are usually mounted in thin metal material or control panels. The breadth of the microswitch terminals is 4.8mm or .187 inches. The overall diameter of the button is 33.2mm.

Please note:
When mounting in your control panel or project case, you will need to allow more mounting depth than a Sanwa OBSF-30 button, due to the longer microswitch housing attached. Please see below for button dimensions.

We also sell a SMALLER 24mm button that is a perfect match for the OBS-30A, which can be used as the start button on a fight stick or arcade machine. These also have the Sanwa OBS-M-1 (OMRON) microswitch and housing fitted with 4.8mm terminals. To order the OBS-24A buttons please see here: Sanwa OBS 24A Arcade Button

Wiring Info:
This button requires 4.8mm crimped wires for connection.
1 wire for ground connection (CO) and 1 wire for signal connection (NO)

Button Dimensions:
Mounting hole required: 30mm
Overall Diameter of button across plunger: 33.2mm
Maximum depth of button from top of plunger to bottom of microswitch: 47mm

OBS-M-1 Microswitch Specification:
Omron Microswitch
10A 1/2HP 125 250VAC
0.6A 125VDC 0.3A 250VDC 


  • 5
    fast and effective fire buttons

    Posted by barabba on 31st Dec 2020

    These buttons are outstanding. My high scores in shootemup games improved with these fire buttons. I can shoot more bullets, faster, with less effort. Easy to install and disinstall (jut with the help of a flat screw driver).

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