Email address:


Mobile Number:


Alternatively, you can contact us like this:

This form is protected by Cloudflare and their Privacy Policy and Terms of Service apply.

AC-DC Power Supplies

AC-DC Power Supplies


3 x 5” 400W AC-DC Power Supplies

The compact CUS400M series of single output AC-DC power supplies are available with 12V, 24V, 15V, 19V, 28V, 36V and 48V outputs in an industry standard 3 x 5 inch package and can deliver 400W with forced air cooling or 250W with 400W peak power for extended periods of time when convection or conduction cooled. CUS400M can be used in both Class I and Class II (no earth wire) applications and offers efficiencies of up to 94%. An option board providing a 5V 2A or 12V 1A standby voltage, remote on/off, remote sense, DC OK signal and AC fail signal is available. Mechanical options include metal base plate, U channel, cover and top mounted integral fan. Safety certifications include IEC/EN/ES 60601-1 and IEC/EN/UL 62368-1 with CE marking for the Low Voltage, EMC and RoHS Directives. The units also comply with EN 55011-B and EN 55032-B conducted and radiated emissions and meet the EN 61000-3-2 harmonics, IEC60601-1-2 Edition 4 and IEC 61000-4 immunity standards. Typical applications include medical (B and BF type), home healthcare, dental, test and measurement, broadcast, professional audio and industrial equipment.



  • 250W Convection / Conduction Cooled with 400W Peak for Extended Time Periods 
  • 400W with Forced Air 
  • Medical Certifications (2 x MOPP) 
  • Class B Conducted and Radiated EMI 
  • Suitable for Class I and Class II installations 
  • Compact 3 x 5 x 1.55” Size 
  • Enclosure & Signal Options 


Product Range Information

Hide details

Show details

Part number Power Output info Construction Status View PDF datasheet
CUS400M-12 400W 12V / 33.33A
Open Frame Current product   View PDF datasheet
CUS400M-15 400W 15V / 26.67A
Open Frame Current product   View PDF datasheet
CUS400M-19 400W 19V / 21.05A
Open Frame Current product   View PDF datasheet
CUS400M-24 400W 24V / 16.67A
Open Frame Current product   View PDF datasheet
CUS400M-28 400W 28V / 14.29A
Open Frame Current product   View PDF datasheet
CUS400M-36 400W 36V / 11.11A
Open Frame Current product   View PDF datasheet
CUS400M-48 400W 48V / 8.33A
Open Frame Current product   View PDF datasheet
Key : Current product

Quick Product Finder

Choose number of outputs:
Choose power supply type:

CUS400M videos

Range Overview Video

CUS400M single output Medical AC-DC power supplies video

Our videos are hosted by Vimeo.By viewing this content you are agreeing to the Terms & Privacy Policy laid out on the Vimeo website.

CUS400M Technical Downloads

CUS400M In the TDK-Lambda Newsroom

New AC-DC power supply thermal management patent enables more efficient design-in
Read the article

400W medical power supply series extended with 15, 19, 28, 36, 48V outputs and integral fan-cooled models
Read the article

400W 3” x 5” medical and industrial power supplies deliver 250W convection/conduction cooled with 400W peak power for extended time periods
Read the article

Further Resources

TDK-Lambda - Trusted, Innovative, Reliable