XWST 3A 15W 12V/24V to 5V waterproof buck converter

IP67 Waterproof DC-DC Buck Converter 12V/24V to 5V 3A

$15.99 NZD
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XWST 3A 15W 12V/24V to 5V waterproof buck converter
  • XWST 3A 15W 12V/24V to 5V waterproof buck converter
  • XWST IP67 waterproof buck converter with pre-attached 12-24V input and 5V output leads
  • Rear of the XWST IP67 buck converter showing the sealed aluminium housing and mounting flanges
  • Side view of the XWST 12V/24V to 5V buck converter, fully potted aluminium body with flying leads
  • Angled view of the XWST waterproof buck converter showing input and output lead entry
  • XWST buck converter dimensions, 44 by 25 by 20.5mm aluminium housing with 51mm mounting hole spacing
  • XWST buck converter wiring diagram, red and black 12-24V input leads, yellow and black 5V output leads
IP67 Waterproof DC-DC Buck Converter 12V/24V to 5V 3A
SKU: XWST-BUCK-12-24-5V-3A

IP67 Waterproof DC-DC Buck Converter 12V/24V to 5V 3A

$15.99 NZD
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.

Buy more, pay less Prices shown are per unit. Add enough of this item and the lower rate applies on its own at checkout. There is no code to enter and you do not need to buy a pack. Choosing a tier here just sets the quantity for you. Larger quantities go out in the same bag, so packing, handling and postage cost us less per unit. We pass that saving straight on to you, so you can buy more for less.

Easy 30-day returns · 12-month warranty

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

This waterproof buck converter steps a 12V or 24V supply down to a stable, regulated 5V. The whole board is potted inside a sealed IP67 aluminium housing, so it keeps a clean 5V rail running in damp, dusty and high-vibration spots where a bare module wouldn't last - vehicles, boats, solar setups and 3D-printer enclosures. It delivers a continuous 3A (15W) - enough to run a Raspberry Pi with a display and a webcam from the one module.

Specifications

Manufacturer modelXWST XW-1224-5V series
Module typeNon-isolated step-down (buck)
Input voltage12-24V DC
Output voltage5V DC (regulated)
Output current3A (15W max)
Output power15W
Conversion efficiencyOver 93%
Output ripple (full load)140mV
No-load current2.5mA
ProtectionOver-current, over-voltage, over-heat, short circuit
Waterproof ratingIP67 (fully potted)
HousingAluminium alloy, doubles as the heatsink
Body dimensions44 × 25 × 20.5mm
Mounting2 × Ø4mm holes, 51mm apart
Cable length13-14cm leads
Operating temperature-40°C to +80°C
Weight45g
Warranty12 months

Datasheets

3A datasheet · 15W PDF

What's in the box

1×
IP67 waterproof buck converter, 3A (15W)

Supplied with pre-attached input and output flying leads, ready to wire in.

Great for

3D printing - power a Raspberry Pi Klipper host from a 12/24V PSU
Automotive 12V USB charging and device power
Camper, caravan and boat 12V systems needing 5V
Solar battery banks - clean 5V from a 12V or 24V supply
Arduino, ESP32 and microcontrollers from an existing 12V line
IoT sensor nodes and embedded systems needing permanent 5V

Wiring & getting started

  1. Identify the leads

    Red is input positive, black is input ground (the input pair). Yellow is the 5V output positive, with a black output ground.

  2. Connect the input

    Red and black input leads to your 12-24V supply. Install per the label and mind polarity - the input is not reverse-polarity protected.

  3. Connect the output

    Yellow and black output leads to your 5V device. Input and output share a common ground inside the module.

  4. Seal the joints

    Heatshrink or use sealed crimps so the connections are as weatherproof as the converter, keeping the IP67 rating end-to-end.

Note: Install per the label - the input is not reverse-polarity protected. Running continuously near the rated 3A shortens lifespan, so leave headroom and derate above 40°C ambient. Body 44 × 25 × 20.5mm, mounting holes 4mm diameter at 51mm spacing.

Frequently Asked Questions

Answers to the questions buyers ask most.

Can this power a Raspberry Pi 4 or 5?
Yes. A Pi 4 draws up to around 1.2-2A under load, so the 3A (15W) rating gives comfortable headroom, especially with a display or USB devices attached.
Will it run from a 12V car battery?
Yes. The input range is 12-24V DC, which suits vehicle, caravan and marine use. Just make sure the supply can deliver enough current for your load.
Can I use it to charge a battery?
No. This is a regulated 5V power supply, not a battery charger - it has no charge profile or cut-off. Use a proper battery charger for charging duties.
Is the IP67 rating genuine - can I mount it outdoors?
Yes. The board is fully potted, so it's dust-tight and handles temporary submersion. It's fine for outdoor enclosures and under-bonnet mounting, as long as you weatherproof the wire joints themselves.
Is the 5V output adjustable?
No, it's a fixed regulated 5V rated at 3A. Size your load to that rather than trying to adjust the voltage.
What do the wire colours mean?
Red is input positive (12-24V), black is input ground, yellow is the 5V output positive, and the second black lead is the output ground. The input and output grounds are common inside the module.

Have a Question About This Product?

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Why Buy from NZN

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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.

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

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