SSR-550GB3 Seasonic 550-Watts ATX12V Power Supply

Technical Specifications:

Manufacturer: Seasonic
Part Number: SSR-550GB3
Product Type: ATX12V Power Supply Unit (PSU), 550 W, non-modular
Total Power Output:
550 W continuous output
Input Specifications:
Input Voltage Range: 100–240 V AC
Input Frequency: 50–60 Hz
Input Current: Approximately 4–8 A depending on voltage
+12 V Rail Output:
Single +12 V rail
Maximum +12 V Output: 45.5 A (approx. 546 W)
Other Rails:
+3.3 V: 20 A
+5 V: 20 A
Combined +3.3 V & +5 V Power: 100 W
–12 V: 0.3 A
+5 VSB (standby): 2.5 A
Efficiency & Certification:
80 PLUS Bronze certified
Typical Efficiency: 82%–85% at 20%–100% load
Active Power Factor Correction (PFC)
Cooling / Fan:
120 mm sleeve-bearing fan
Smart & Silent Fan Control for automatic speed regulation
Protection Features:
Over Power Protection (OPP)
Over Voltage Protection (OVP)
Under Voltage Protection (UVP)
Short Circuit Protection (SCP)
Connectors (Fixed Cables):
1 × 20+4-pin ATX main power connector
1 × 4+4-pin EPS / CPU connector
2 × 6+2-pin PCIe connectors
6 × SATA power connectors
3 × 4-pin Molex connectors
1 × 4-pin floppy connector
Form Factor / Dimensions:
ATX form factor
Dimensions: 150 × 140 × 86 mm
Reliability:
MTBF: Approximately 100,000 hours (excluding fan)
Typical Use Case:
Suitable for gaming PCs, office desktops, and mid-range workstations requiring a reliable 550-Watt PSU.