Better World

RS PRO 400W PC Power Supply, 200 → 240V ac Input, 3.3V Output

View all PC Power Supplies
Bulk discount available

Subtotal (1 unit)*

£46.05

(exc. VAT)

£55.26

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 9 unit(s) shipping from 27 October 2025
  • Plus 7 unit(s) shipping from 27 October 2025
  • Plus 12 unit(s) shipping from 11 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 - 4£46.05
5 - 9£44.67
10 - 24£43.28
25 - 49£41.90
50 +£40.52

*price indicative

Better World

Our Better World range features products that make it easy for you to make a greener product choice you can trust. Click here to find out more.

RS Stock No.:
208-3898
Brand:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

Input Voltage

200 → 240V ac

Output Voltage

3.3 V dc, 5 V dc, 12 V dc, -12 V dcV

Power Rating

400W

Output Current

2.5 A, 15 A, 18 A, 32 A, 300 mA

Number of Outputs

5

Length

150mm

Width

140mm

Depth

85mm

Mounting Type

Desktop

Efficiency

85%

Load Regulation

±5%

Line Regulation

+5V/+3.3V/+12V/+5VSB:±5% -12V: ±10%

Better World Verification

80 PLUS Bronze

Better World Product

Yes

Input Frequency Range

47→63Hz

Minimum Temperature

+30°C

Weight

1.45kg

Power Signal Conversion Type

AC-DC

Maximum Temperature

0°C

Holdup Time

8 m/s @ 75 %

Maximum Input Current

3.5A

COO (Country of Origin):
CN

RS PRO PC Power Supply, 400W


Introducing the RS PRO PC Power Supply, a high-quality, non-modular power supply solution for use with desktops. It’s been designed with four SATA connectors, making it the ideal choice for basic system builds and desktop PC upgrades.

Features and Benefits:


  • The high-performance RS PRO power supply system can be used as a high-quality upgrade for basic system builds and desktop upgrades in a wide range of applications and environments

  • Designed with a Japanese TK main capacitor, it delivers reliable performance and outstanding quality

  • In addition to this, this PC PSU is 80 Plus Bronze certified, achieving an efficiency of up to 88% at a load of 50%

  • The thermally controlled fan design ensures there is little to no noise, while the built-in 140 mm fan diameter offers optimum cooling for the unit even when being pushed to its limit

  • It also has full range voltage and SCP function, safely protecting the PSU and motherboard if there is a power cut

  • This power supply unit has been designed with the strictest standards in mind, ensuring peace of mind for ultimate reliability, high-efficiency and trouble-free operation

  • The high tech and aesthetically pleasing design ensures that the unit looks professional and fits in with your existing system builds

Applications:


PC power supply units or PSU's are devices that can convert mains AC power into low voltage regulated DC power, specifically for the internal components of a desktop computer. An additional benefit of using a PSU for a desktop PC setup is that it can often regulate overheating which is crucial for safety and protection of expensive electrical components. You will most commonly find PC PSU’s used in:
  • Automation

  • Computers

  • Electric vehicles

  • Medical

Why RS PRO?


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Related links