• 100% Hi-Pot test
  • Active PFC
  • 80mm Low-Noise Fan
  • Dimension: 140* 150 *86mm
  • Life expectancy: MTBF >100,000 hours

EJ-55P.E5575 550W ATX Switching Power Supply Description

The EJ-55P.E5575 550W ATX Switching Power Supply is an industrial grade ATX switching power supplies. This high efficiency power supply features thermal fan speed control, Active PFC, and triple circuit protection and are designed to fit perfectly into your Tower Case, Server Case or 4U Rackmount chassis.

AC Input
Input Voltage: 90-264 VAC
Input Frequency: 50 ~ 60 Hz
MTBF: 100,000 hrs minimum (at 25 ℃)
Input Current: 8-5 A

Power Good Signal: 100ms~500ms, TTL compatible signal
Power Fail Delay: >1msec. ,TTL compatible signal
PS-ON: Power off:PS-ON = 2V min. ;Power on:PS-ON = 0.8V max.

Operating Temperature: 0˚C to 45˚C
Storage Temperature: -20˚C to +70˚C
Operating Humidity: 20% to 90%,non-condensing
Storage Humidity: 5% to 95%, non-condensing

Safety & EMI/RFI
Safety Standards: UL,cUL,TUV,CB
EMI/RFI Standards: CISPR22(EN55022) Class A, FCC Part15 Class A

MTBF: 100,000 hours
Cooling: 8 cm DC Fan
Dimension(DxWxH): 140 x 150 x 86 mm

DC Outputs

Voltage +5V +12V1 +12V2
MIN 1 1 1
NOM 15 9 9
MAX 30 16 16



1) The maximum continuous total DC output power shall not exceed 550 Watts.
2) The maximum continuous combined load on +5V and +3.3V outputs shall not exceed 150 Watts
3) The maximum continuous combined load on +12V1, +12V2 outputs shall not exceed 480Watts.

20 + 4 pin P4 MB 8-Pin peripheral FDD 6-Pin SATA
20+4 Pin P4 MB 8-Pin Peripheral FDD 6-Pin SATA
X 1 X 1 X 1 X 7 X 1 X 1 X 2