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SeaSonic 400W Active PFC F0 1U Power Supply (SS-400H1U)

SeaSonic 400W Active PFC F0 1U Power Supply (SS-400H1U)
  • 49841_thumb_P_1551144815773
  • 49841_thumb_P_1551145045195
  • 49841_thumb_P_1551145046537
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  • Product Name:
    SeaSonic 400W Active PFC F0 1U Power Supply (SS-400H1U)
  • Model Number:
  • Brand:
  • Manufacturer Warranty:
    5 Year


SeaSonic 400W Active PFC F0 1U Power Supply (SS-400H1U)

This is a Seasonic industrial power supply is 80 PLUS® efficiency rated and it features a high reliability ball bearing fan. Fully modular cables and easy-swap connectors add a new dimension to its versatility, while the Seasonic Smart and Silent Fan Control (S2FC) system make it a silent performer. These units comply with the latest PFC harmonics (IEC1000-3-2 and EN61000-3-2 standards) and are protected against short circuit, over voltage and over power. On the 3.3 V rail there is no minimum load requirement for this unit to work properly.


  • Intel EPS1U v2.1 and ATX 12 V v2.2 compliant

  • Forward converter circuit

  • High efficiency and reliability for industrial level

  • Easy-swap connector design

  • 40 mm double ball bearing fan

  • Fully modular cables

  • Smart and Silent Fan Control (S2FC)

  • Zero minimum load on 3.3 V rail

  • Short circuit protection on all outputs

  • Over voltage protection

  • Over power protection

  • 100 % HiPot test

  • 100 % Burn-in, high temperature cycled on/off

  • PFC harmonics compliance: IEC1000-3-2 and EN61000-3-2 standards

DC Outputs
+3.3 V+5 V+12 V Combined-12 V+5 VsbTotal continuous powerInput Type
20 A21 A29 A0.8 A3 A400 WFull range
130 W (max.)348 W
Input frequency50 / 60 Hz
Efficiency (220 V AC - 240 V AC, full load)83 % (typical)
Efficiency (100 V AC - 120 V AC, full load)80 % (typical)
Dielectric withstand, input to frame/ground1800 VAC, 1 sec
Dielectric withstand, input to output1800 VAC, 1 sec
Line regulation± 1 % (typical)
Load regulation± 5 % (typical)
Cross regulation± 5 % (typical)
MTBF, full load @ 25 °C ambient (excl. DC fan)> 100,000 hours
Active Power Factor Correction99 % (typical)


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