MTS-402 MTS-403 4PDT Mini Toggle Switch — ON-ON & ON-OFF-ON, 12-Pin, 6mm

Choose ON-ON (MTS-402) when you need to switch between two circuits with no neutral position — common in guitar pickup selectors and relay control panels. Choose ON-OFF-ON (MTS-403) when you need a center-off position to fully disconnect the circuit, typically used in motor direction control or dual-power-source switching.

4PDT stands for 4-Pole Double-Throw. It controls 4 independent circuits simultaneously, each with 2 throw positions. With 12 pins total (4 rows × 3 pins), it can route 4 separate signal or power lines at once — ideal for complex audio routing or multi-channel control.

The bushing diameter is 6mm. You will need to drill a 6mm (approximately 15/64" or 1/4") hole in your panel. Always verify with a caliper before drilling, as panel thickness can affect fit and nut engagement depth.

Mini toggle switches of this type are generally rated for DC 12V–30V at 1A–3A for low-voltage applications. They are not intended for mains AC voltage. Always verify the specific rating on the component datasheet before use in your circuit.

These are standard unsealed mini toggle switches and are not rated for outdoor or high-humidity use. For outdoor or moisture-prone installations, a waterproof toggle switch with an IP65 or higher rating is recommended.

The solder-lug terminals on mini toggle switches of this size are generally compatible with wire gauges from 22 AWG to 26 AWG. For higher-current applications, use the lower AWG (thicker wire) within that range to minimize resistance and heat buildup.

Yes. 4PDT mini toggle switches are widely used in guitar wiring for coil-splitting, phase reversal, and series/parallel switching. The ON-ON type is most common for pickup switching, while ON-OFF-ON adds a bypass or mute position. The low-resistance contacts help preserve signal integrity in passive circuits.