SeaSonic SS-400H1U 400W Active PFC 1U PSU

The SeaSonic SS-400H1U is a 400W 1U power supply built for industrial-level reliability, with active power factor correction and a compact 235 x 100 x 40mm form factor. Its forward converter circuit and high-efficiency design make it a dependable choice for space-constrained systems that need stable, low-noise power.

Key Features

• Intel EPS12V specification compliance
• Forward converter circuit
• High efficiency and reliability for industrial level
• Easy swap connector design
• High reliability ball bearing fan
• Low ripple and noise
• Smart & Silent Fan Control (S2FC)
• Zero minimum load on 3.3V rail
• Short circuit protection on all outputs
• Over voltage protection
• Over power protection
• 100% hi-pot test
• 100% burn in, high temperature cycled on/off
• PFC harmonics compliance: IEC1000-3-2 / EN61000-3-2 standards

Specifications

• Dimensions: L235 x W100 x H40mm (9.3 x 3.9 x 1.6)
• Fan type: 38 x 38mm
• Input frequency: 50 / 60 Hz
• Inrush current, cold start: 100A max.
• Efficiency, 220-240VAC, full load: 83% typical
• Efficiency, 100-120VAC, full load: 80% typical
• Dielectric withstand, input to frame/ground: 1800VAC, 1sec.
• Dielectric withstand, input to output: 1800VAC, 1sec.
• Line regulation: +/-1% typical
• Load regulation: +/-5% typical
• Cross regulation: +/-5% typical
• Ripple / noise: 1%
• MTBF, full load: >100K hours (excluding the DC fan)
• Power Factor Correction: Active PFC 99% typical
• Safety: CUL, TUV, CB, CCC, BSMI
• EMC: CE, FCC, C-tick

What's in the Box

• 1x SeaSonic 400W Active PFC F0 1U PSU (SS-400H1U)