MTS PS Toggle Switch SPDT — 3/6/9/12 Pin, 2-Way/3-Way, Latching & Self-Reset

Pin count corresponds to the number of electrical contacts. A 3-pin switch typically handles one circuit (SPDT), while 6-pin doubles up for two independent circuits (DPDT). 9-pin and 12-pin versions generally support three or four circuits respectively. Count the wires your application requires and match accordingly — for example, a simple on/off light circuit needs just 3 pins, while controlling two separate loads simultaneously calls for 6 pins.

A 2-way (On-On) switch toggles between two active positions with no center-off state — the circuit is always connected to one of the two outputs. A 3-way (On-Off-On) switch adds a center position that disconnects the circuit entirely, useful when you need to cut power between two states, such as reversing a motor direction with a safe stop in the middle.

Latching (standard MTS) switches stay in the position you set them until manually moved — like a light switch. Self-reset variants (PS series, MTS-123, MTS-223) spring back to their default position when you release the lever, functioning like a momentary pushbutton. Choose self-reset for horn buttons, jog controls, or any application where you only want the circuit active while actively holding the switch.

MTS and PS series miniature toggle switches are generally rated for 6A at 125V AC or 3A at 250V AC. For DC circuits, derate the current rating — typically by 20–30% depending on the load type. Always verify the rating stamped on the switch body or in the datasheet before installing in high-current or safety-critical circuits.

Standard MTS and PS series switches are not rated for outdoor or wet environments in their base form. For moisture-exposed installations, a waterproof rubber boot cover (sold separately) can be fitted over the toggle lever to provide basic splash protection. For fully sealed applications, contact us to confirm suitability or explore sealed variants.

Standard MTS series switches typically require a 6mm (≈1/4") round panel cutout. The 12MM variants in this listing require a larger 12mm (≈15/32") hole. Always confirm the mounting diameter for your specific variant before drilling, and check that your panel thickness falls within the switch's bushing length — generally up to 3–5mm for most miniature toggle switches.

Yes. The solder lug or quick-connect terminals on MTS and PS series switches are generally compatible with 22–18 AWG wire, which covers the most common gauges used in automotive, hobby electronics, and light industrial wiring in the US. For heavier gauge wiring, contact us to confirm terminal compatibility.

For a basic on/off function with no center-off, choose a 3-pin 2-way (On-On) latching variant such as the MTS-102. If you want a center-off position — so the circuit is disconnected in the middle — choose the MTS-103 (3-pin 3-way, On-Off-On). Both are latching, so the switch stays where you leave it.