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AC-DC Power Supplies

AC-DC Power Supplies


600W/800W 1U Modular power supply

The MU4 series comes in a 1U fan cooled Aluminium case offering 600W low line and 800W high line. With intelligent fan control, the MU4 fan rotation speed can be reduced, producing audible noise as low as 36dBA*

Initially, nine modules are available with ratings from 150W to 480W, offering a continuous range of voltages from 3.3V to 104V. With 1 MOPP (1.5kVac) input to ground, 2 MOPP (4kVac) input to output and 1 MOPP (1.5kVac) output to ground isolation and a selection of standby and control options including PMBus™ the MU range is certified for both medical and industrial applications and supported by a 7 year warranty

Safety certifications include IEC/EN/ES 60601-1 and IEC/EN/UL 62368-1 with UK CA and 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 IEC60601-1-2 Edition 4 and IEC 61000-4 immunity standards. They are designed to meet the requirements of IEC61010-1.


*Patent pending. Configuration dependent, nominal conditions of 25°C, 115Vac/240Vac and 80% unit power



  • Extremely low audible noise fan
  • BF ready medical isolation (MOPP)
  • Up to 5 outputs
  • PMBus™ communication option
  • 7 year warranty


Product Range Information

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Part number Power Output info Construction Status View PDF datasheet
MU4 (up to 5 outputs) 600W (Low line)
800W (High line)
3.3V - 104V / 54A Enclosed Current product   View PDF datasheet
Key : Current product

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MU4 videos

Range Overview Video

MU4 600W/800W 1U Modular power supply video

Range Overview Video

Introducing MU4 600/800 watts 1U modular power supply


FAQ Video New

MU4 Intelligent fan control

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How to configure MU4

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What is MU4?

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MU4 EMC Class B performance

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MU4 Certification

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MU4 full MOPP medical isolation

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MU4 Quiet by Design

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MU4 Technical Downloads

MU4 In the TDK-Lambda Newsroom

1U high modular power supply delivers up to 800W with BF-ready isolation and extremely low acoustic noise - quiet by design
Read the article


Further Resources