MTS-103 mini toggle switch with a red body, chrome lever and two mounting nuts, marked ON OFF ON 2A 250VAC 5A 120VAC

MTS-103 Mini Toggle Switch - SPDT ON-OFF-ON, Red

$0.79 NZD $0.99 NZD
Skip to product information
MTS-103 mini toggle switch with a red body, chrome lever and two mounting nuts, marked ON OFF ON 2A 250VAC 5A 120VAC
  • MTS-103 mini toggle switch with a red body, chrome lever and two mounting nuts, marked ON OFF ON 2A 250VAC 5A 120VAC
  • Close up of the red MTS-103 showing the ON OFF ON, 2A 250VAC and 5A 120VAC markings and the three solder lug pins
  • MTS-103 dimension diagram: 29mm total height, 13 x 11mm body, 6mm mounting hole, 4.8mm terminal spacing
  • MTS-103 toggle switch panel mounted in a black enclosure with ON, OFF and ON labels
  • Red MTS-103 toggle switch shown in control panels, RC projects, DIY electronics, automotive dashes, power supplies and off-grid builds
MTS-103 Mini Toggle Switch - SPDT ON-OFF-ON, Red
SKU: SW-MTS103-SPDT-3P-RED-CL

MTS-103 Mini Toggle Switch - SPDT ON-OFF-ON, Red

$0.79 NZD $0.99 NZD Save 20%
Dispatch: Within 24 hours 7-day dispatch, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural.

Easy 30-day returns · 12-month warranty

Free Urban delivery on orders over $66
Urban $66 Rural $88

Red end-of-line model. We now stock the blue MTS-103 as our current colour. This red switch is brand new and carries our standard 12-month warranty.

The MTS-103 is a compact SPDT mini toggle switch with ON-OFF-ON action, which means the lever selects between two circuits with a genuine off position in the middle rather than always feeding one side or the other. It panel mounts through a standard 6mm hole and terminates on three solder lugs, so it drops straight into a project box, a dash panel or an instrument front. This red batch ships with two mounting nuts.

Specifications

ModelMTS-103
Marking on the partON OFF ON, 2A 250VAC, 5A 120VAC
Switch typeSPDT, single pole double throw
FunctionON, OFF, ON (3 position, centre off)
Rated current and voltage2A at 250VAC, 5A at 120VAC
Terminals3 solder lug pins
Terminal spacing4.8mm centre to centre
Terminal width1.2mm
Panel cutout6.0mm diameter
ThreadM6 x 0.75, 9.0mm long
Panel thickness0.5 to 4.0mm
Body size13.0mm wide x 11.0mm high
Total height29.0mm including the lever
Lever3.0mm diameter, 12.5mm long
Contact resistance20 milliohm or less
Insulation resistance1000 megohm or more at 500VDC
Dielectric strength1500VAC for 1 minute
Operating temperature-25°C to +85°C

What's in the box

1×
MTS-103 mini toggle switch, red body

SPDT ON-OFF-ON on 3 solder lugs, ready to panel mount. Includes 2 mounting nuts. Sold individually.

Great for

RC models and hobby builds, forward off reverse
Automotive and dash panel switching
Selecting between two circuits with a safe off state
3D printer and CNC machine modifications
Instrument and test equipment front panels
General 3 position panel switching

Wiring & getting started

  1. Identify the pins

    The centre lug is common. The two outer lugs are the switched circuits. Lugs sit 4.8mm apart, so a 0.1 inch protoboard pitch will not line up exactly.

  2. Lever up

    Common connects to the outer pin on one side, feeding circuit A.

  3. Lever centred

    Common is disconnected from both outer pins. This is a genuine off, nothing is powered.

  4. Lever down

    Common connects to the other outer pin, feeding circuit B.

  5. Mount it

    Drill a 6.0mm hole in a panel 0.5 to 4.0mm thick, pass the M6 x 0.75 thread through and lock it with the supplied nuts. Set the depth with the rear nut before tightening the front one.

  6. Reversing a small DC motor

    Motor positive to one outer pin, motor negative to the other, supply positive to common, and cross-link the outer pins to the opposite supply rail. Centre gives you a safe stop. Keep the load inside the rating or drive a relay instead.

Note: The 250VAC figure is the switch's own rating, not permission to wire mains. Any mains AC work in New Zealand must be carried out or certified by a registered electrician under the NZ wiring rules.

Frequently Asked Questions

Answers to the questions buyers ask most.

Why is the red model listed separately?
The red model has different electrical markings and includes two mounting nuts, so it has its own product page. It is brand new and carries our standard 12-month warranty.
Does the standard warranty apply?
Yes. This switch has the same 12-month warranty and returns treatment as our current range.
How is the red one different from the blue MTS-103 you sell?
Two real differences. The red batch is marked 2A 250VAC / 5A 120VAC, while the blue stock is marked 6A 125VAC, so the red one takes a higher voltage and the blue one takes more current. The red also ships with two mounting nuts where the blue ships with one. Body size, ON-OFF-ON action, 3 solder lugs and the 6mm panel fitting are the same on both.
What is the difference between ON-OFF-ON and ON-ON?
ON-OFF-ON, which is this switch, has three lever positions: up, a genuine centre off, and down. ON-ON, which is the MTS-102, has only two positions and no centre off, so one side is always connected.
How do I wire it to reverse a small DC motor with a safe off?
Motor positive to one outer lug, motor negative to the other, supply positive to the centre common lug, then cross-link the outer lugs back to the opposite supply rail. Flicking the lever swaps the polarity and reverses the motor; the centre position disconnects it entirely. Keep the load inside the switch rating or use the switch to drive a relay instead.
What size hole do I need to drill?
6.0mm. The thread is M6 x 0.75 and 9.0mm long, which suits a panel 0.5 to 4.0mm thick. Set the depth with the rear nut before you tighten the front one.
Can I use it on mains?
The part is marked 2A 250VAC, so the switch itself is rated for it, but that is not permission to wire mains yourself. Any mains AC work in New Zealand must be carried out or certified by a registered electrician under the NZ wiring rules.
Will the pins fit a 0.1 inch breadboard or protoboard?
Not exactly. The lugs are 4.8mm apart centre to centre, and 0.1 inch is 2.54mm, so they will not drop into adjacent holes. They are solder lugs meant for wires rather than board mounting.

Have a Question About This Product?

Send it through and we will get back to you by email.

Why Buy from NZN

Useful parts, fair prices and someone local to help.

I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

More about NZN Electronics

  • Stocked here in New Zealand

    Orders are picked and packed in Te Awamutu and dispatched within 24 hours every day, excluding public holidays. NZ Post target delivery is 1-2 days urban and 2-4 days rural.

  • Fair prices, clearly shown

    Prices are kept competitive and quantity discounts are shown upfront. Free delivery starts at $66 for urban addresses and $88 for rural addresses.

  • 30-day returns and 12-month warranty

    Get in touch if something is not right and we will help sort it.

  • Practical product support

    Ask a product question and get help from a real person in New Zealand who knows the range.

You may also like