This is an EPS 12 V industrial switch mode power supply with 80 PLUS® Gold efficiency rating. The series comes in two power versions; 500 Watts and 400 Watts. This unit has fully modular cabling and it meets important EMI, EMC and safety standards and with many protection features it is considered to be very safe. With its stability and quality electrical components it is a very reliable and power supply for any kind of industrial application.



80PLUS Gold
Intel EPS1U v2.1 compliant Yes
ATX 12 V v2.2 compliant Yes
Dimensions 235 mm (L) x 100 mm (W) x 40 mm (H)
DC to DC converter design Yes
Forward converter circuit No
Fully modular cables Yes
Fixed cables No
40 mm double ball bearing fan Yes
60 mm double ball bearing fan No
S3FC - including Fanless mode Yes
S2FC - Smart and Silent Fan Control No
Easy-swap connector design No
Zero minimum load on 3.3 V rail Yes
Short circuit protection on all outputs Yes
Over voltage protection Yes
Over power protection Yes
100 % HiPot test Yes
100 % Burn-in, high temperature cycled on/off Yes
Safety compliance CB, cUL, TUV, BSMI
EMI/EMC compliance CE, FCC, RCM
Input frequency 50 / 60 Hz
Efficiency 80 PLUS Gold
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 Correction 99 % (typical)


DC Outputs
+3.3 V +5 V +12 Combined -12 V +5 Vsb Total continuous power Input Type
 20 A 20 A 40 A 0.3 A 2.5 A 500 W 100–240 VAC
100 W (max.) 480 W 3.6 W 12.5 W
  • EPS 12 V
  • 80 PLUS Gold Certified
  • Safety: CB, cUL, TUV, BSMI
  • Dimensions: 235 mm (L) x 100 mm (W) x 40 mm (H)


Data Sheet

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SeaSonic SS-500L1U 80 Gold Power Supply

  • Brand: Seasonic
  • Product Code: SS-500L1U
  • Availability: In Stock
  • ¥18,326

  • Ex Tax: ¥16,660

Tags: SeaSonic, Power Supply