{"product_id":"mini-toggle-switch-spdt-3-position-on-off-on-mts-123-5a-125v-10-pack","title":"Mini Toggle Switch SPDT 3-Position (ON)-OFF-(ON) MTS-123 5A 125V AC — 10-Pack","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMini SPDT Toggle Switch (ON)-OFF-(ON) — Reliable Momentary Control for DIY Panels \u0026amp; Electronics\u003c\/h2\u003e\n\u003cp\u003eIf you have ever had a momentary control button fail mid-project — or spent hours hunting for a compact, reliable mini toggle switch that actually fits your enclosure — you know how frustrating sourcing the right part can be. Hobbyists, makers, and automotive enthusiasts building custom control panels need a switch that responds instantly, mounts cleanly, and holds up through repeated use.\u003c\/p\u003e\n\u003cp\u003eThis listing includes \u003cstrong\u003e10 pieces\u003c\/strong\u003e of the MTS-123 mini SPDT toggle switch, each featuring a 3-pin solder lug terminal configuration and a compact metal bushing for panel mounting. The switches are rated at \u003cstrong\u003e5A \/ 125V AC\u003c\/strong\u003e (typically derated to 2A at 250V AC) and operate in a \u003cstrong\u003e3-position (ON)-OFF-(ON)\u003c\/strong\u003e configuration — both outer positions are momentary (spring-return to center OFF). The bushing diameter is typically \u003cstrong\u003e6mm (approx 1\/4\")\u003c\/strong\u003e, fitting standard pre-drilled panel holes. Sold as a 10-pack to cover a full build or keep spares on hand.\u003c\/p\u003e\n\u003cp\u003eThese mini toggle switches are a natural fit for \u003cstrong\u003eDIY electronics control panels\u003c\/strong\u003e, RC car and truck wiring harnesses, model railroad layouts, amateur radio accessory switching, and custom automotive dash builds where a momentary-action SPDT toggle switch is needed in a tight space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔌\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for standard panel cutouts — typically 6mm (approx 1\/4\") diameter. Fits most DIY enclosures, project boxes, and automotive dash panels. Thread standard is generally M6 or 1\/4\"-40 UNS. Verify your panel spec before installation.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e These are \u003cem\u003emomentary\u003c\/em\u003e (ON)-OFF-(ON) switches — the outer positions spring back to center when released. If you need latching ON-OFF-ON behavior, please confirm before ordering or contact us.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These Mini SPDT Toggle Switches\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMomentary (ON)-OFF-(ON) Action\u003c\/strong\u003e — Both outer positions are spring-return momentary, making these ideal for jog controls, horn circuits, and momentary-trigger applications in DIY control panels.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCompact Metal Bushing Construction\u003c\/strong\u003e — The threaded metal bushing provides a secure, rattle-free panel mount in enclosures with standard 6mm (approx 1\/4\") cutouts, without requiring additional hardware in most cases.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔁\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eSPDT 3-Pin Solder Lug Terminals\u003c\/strong\u003e — Single Pole Double Throw wiring gives you a common, normally-open, and normally-closed terminal — versatile for a wide range of switching circuits in amateur radio and automotive wiring projects.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e5A \/ 125V AC Rated\u003c\/strong\u003e — Handles typical low-voltage AC and DC control circuits. Suitable for accessory switching in 12V automotive systems and standard 120V AC control applications within rated load limits.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e10-Pack Value Quantity\u003c\/strong\u003e — Enough switches to complete a full multi-switch panel build, with extras for prototyping or replacements — reducing reorder delays on active projects.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎛️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMTS-123 Industry-Standard Form Factor\u003c\/strong\u003e — The MTS-123 designation is a widely recognized mini toggle switch footprint, making these drop-in compatible with existing panel layouts that already use this form factor.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Mini SPDT Toggle Switch MTS-123\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSwitch Type\u003c\/th\u003e\n\u003ctd\u003eSPDT (Single Pole Double Throw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Mode\u003c\/th\u003e\n\u003ctd\u003e(ON)-OFF-(ON) — Momentary outer positions, center OFF latching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Positions\u003c\/th\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Pins \/ Terminals\u003c\/th\u003e\n\u003ctd\u003e3 (solder lug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003e125V AC (typically derated to 2A at 250V AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent Rating\u003c\/th\u003e\n\u003ctd\u003e5A at 125V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePanel Mounting Hole\u003c\/th\u003e\n\u003ctd\u003eTypically 6mm (approx 1\/4\") diameter — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBushing Thread\u003c\/th\u003e\n\u003ctd\u003eGenerally M6 or 1\/4\"-40 UNS — contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel \/ Part Number\u003c\/th\u003e\n\u003ctd\u003eMTS-123\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Applications\u003c\/th\u003e\n\u003ctd\u003eDIY control panels, RC vehicles, automotive accessories, amateur radio, model trains\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutdoor \/ Waterproof Rating\u003c\/th\u003e\n\u003ctd\u003eNot rated for outdoor use without protective boot (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right toggle switch size for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eFor most DIY control panels and enclosures, a mini toggle switch with a bushing diameter of typically \u003cstrong\u003e6mm (approx 1\/4\")\u003c\/strong\u003e fits standard pre-drilled holes. Measure your panel cutout before ordering. If you are replacing an existing switch, match the thread diameter and bushing length of the original part to ensure a clean fit without enlarging the hole.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the current and voltage rating, and can I use it in a 12V DC automotive circuit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis switch is rated at \u003cstrong\u003e5A at 125V AC\u003c\/strong\u003e. For 250V AC circuits, the rating is generally derated to 2A. For 12V DC automotive accessory circuits, these switches are typically suitable for loads up to 5A DC, though DC ratings can vary — verify your specific load before wiring. Do not exceed the rated values.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this toggle switch be used outdoors or in humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe MTS-123 mini toggle switch is \u003cstrong\u003enot rated for outdoor or waterproof use\u003c\/strong\u003e in its standard form. For outdoor or high-moisture applications, a weatherproof rubber boot cover (sold separately) is typically recommended to protect the switch mechanism from moisture, dust, and debris.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does (ON)-OFF-(ON) mean and how is it different from ON-OFF-ON?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe parentheses indicate a \u003cstrong\u003emomentary position\u003c\/strong\u003e. In an (ON)-OFF-(ON) switch, the two outer positions activate only while the lever is held — releasing it causes the lever to spring back to the center OFF position. This differs from ON-OFF-ON, where all three positions are latching. Use (ON)-OFF-(ON) for momentary actions like horn triggers, jog controls, or pulse signals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat thread standard does the MTS-123 bushing use — will it fit my panel?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe MTS-123 mini toggle switch typically uses a \u003cstrong\u003emetric M6 or standard 1\/4\"-40 UNS\u003c\/strong\u003e threaded bushing for panel mounting. Check your panel hole specification to confirm compatibility. If you need exact thread confirmation for a specific application, contact us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow are the 3 pins wired on an SPDT toggle switch?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ecenter pin is the Common (COM)\u003c\/strong\u003e terminal. The two outer pins are the Normally Open (NO) and Normally Closed (NC) terminals. When the lever is thrown to one side, COM connects to that terminal. In the center OFF position, COM is disconnected from both. Always verify pin assignments with a multimeter before soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat projects are these mini toggle switches commonly used for?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThese switches are widely used in \u003cstrong\u003eDIY electronics control panels\u003c\/strong\u003e, RC car and truck wiring harnesses, model railroad layouts, amateur radio accessory switching, custom automotive dash builds, and small appliance modifications. Their compact MTS-123 form factor makes them a go-to choice for space-constrained enclosures where a reliable momentary SPDT toggle is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your \u003cstrong\u003equantity\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52331301929234,"sku":"GYLZYGDBHSM3003x10","price":26.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-01_0c2cd5d5-1045-4568-9d2f-63e79bcc7698.jpg?v=1780899790","url":"https:\/\/homediyer.com\/products\/mini-toggle-switch-spdt-3-position-on-off-on-mts-123-5a-125v-10-pack","provider":"HomeDIYer","version":"1.0","type":"link"}