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

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

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 or 5A
SKU: XWST-BUCK-12-24-5V-3A

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

$15.99 NZD
Output Current
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NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural, or free pick-up in Te Awamutu.

Easy 30-day returns · 12-month warranty

Add $66.00 for Free Urban delivery ($88.00 for Rural)
Urban $66 Rural $88

This waterproof buck converter steps a 12V or 24V supply down to a stable, regulated 5V. The 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, such as vehicles, boats, solar setups and 3D-printer enclosures. It comes in two ratings in the same small housing: 3A (15W), enough for a Raspberry Pi 4 with a display and webcam, or 5A (25W) for a Raspberry Pi 5 or heavier 5V loads.

Specifications

Manufacturer modelXWST XW-1224-5 series
Module typeNon-isolated step-down (buck)
Input voltage8-40V DC, for 12V or 24V systems
Output voltage5V DC (regulated)
Output current3A or 5A, choose above
Output power15W (3A) or 25W (5A)
Conversion efficiencyOver 93%
Output ripple (full load)160mV
No-load current30mA
ProtectionOver-current, over-voltage, over-heat, short circuit
Reverse polarityNot protected, fit an inline fuse
Waterproof ratingIP67 (fully potted)
HousingAluminium alloy, doubles as the heatsink
Body dimensions44 × 25 × 20.5mm, 58.3mm over the mounting tabs
Mounting2 × 4mm slots, 51mm centres
Operating temperature-30°C to +80°C
Weight45g
Warranty12 months

Datasheets

3A datasheet · 15W PDF 5A datasheet · 25W PDF

What's in the box

1×
IP67 waterproof buck converter, 3A (15W) or 5A (25W) as selected

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
Raspberry Pi 5 projects from a 12V or 24V supply (5A version)
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
Automotive 12V device power and IoT nodes 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 12V or 24V supply, through an inline fuse. Mind polarity, as 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: Running continuously near the rated current shortens lifespan, so leave headroom and reduce the load in a hot or poorly ventilated spot. For the input fuse, use 3A for the 3A version and 5A for the 5A version on a 12V supply, or 2A and 3A on a 24V supply.

Frequently Asked Questions

Answers to the questions buyers ask most.

Should I choose the 3A or the 5A?
Add up the current your 5V devices draw and pick the version with some headroom. The 3A (15W) suits a Raspberry Pi 4, microcontrollers, sensors and most USB devices. The 5A (25W) suits a Raspberry Pi 5, LED strips or several devices on one 5V rail. Both use the same housing and wiring.
Can this power a Raspberry Pi 4 or 5?
Yes. A Pi 4 runs comfortably on the 3A. For a Pi 5, choose the 5A. A Pi 5 will boot on 3A, but it then limits its USB ports to 600mA. Because this converter is a plain wired 5V supply, the Pi 5 cannot detect the 5A rating itself, so set PSU_MAX_CURRENT=5000 in its bootloader configuration to allow the full 1.6A to USB devices.
Will it run from a 12V car battery?
Yes. It accepts 8-40V DC, so 12V and 24V vehicle, caravan and marine systems are covered, including a battery at full charge. Make sure the supply can deliver enough current for your load, and fit an inline fuse on the input: 3A for the 3A version or 5A for the 5A version on 12V.
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.
Can I mount it outdoors?
Yes. It is rated IP67 and the board is fully potted, so it is dust-tight and handles temporary submersion. It is fine for outdoor enclosures and under-bonnet mounting from -30°C to +80°C, as long as you weatherproof the wire joints themselves.
Is the 5V output adjustable?
No. It's a fixed regulated 5V, rated at 3A or 5A depending on the version you choose. Size your load to that rather than trying to adjust the voltage.
What do the wire colours mean?
Red is input positive (8-40V), 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. Both versions use the same colours.

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