Seasonic S12III 550 SSR-550GB3 550W 80+ Bronze Silent Fan Control Power Supply

SKU: Condition: New

In stock

Warranty: 1 Year Replacement

  • Fixed cabling – Provides all the necessary cables required for a standard pc.
  • 80 plus Bronze – 82% efficient at 20% load, 85% efficient at 50% load, and 82% efficient at 100% load.
  • 120 mm SLEEVE BEARING FAN; The 120 mm fan inside is regulated by the Sea sonic S2FC fan control, which optimizes the fan speed according to the needs of the system to create a quiet and pleasant environment.

 10,500.00  12,000.00

In stock

    Seasonic S12III 550W 80+ Bronze Power Supply

    The S12III Bronze Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system. The Seasonic S12III 550W 80+ Bronze achieves 80 PLUS® Bronze standard of providing at least 82 %, 85 % and 82 % power usage efficiency at 20 %, 50 % and 100 % operating loads, respectively. This efficiency, combined with Active Power Factor Correction, enables the S12III Bronze series power supplies to lessen energy waste, which translates into savings on the costs of energy costs for its users. In addition to being greatly efficient, the S12III units utilize the LLC resonant converter design, and the industry’s leading Smart and Silent Fan Control (S2FC).

    SeaSonic S12III

    Built with premium components and advanced technology, the Seasonic S12III 550W 80+ Bronze power supplies deliver robust, stable output for a mainstream system or gaming rig. It achieves 80 PLUS Bronze standard, resulting in less heat generation, less power waste and therefore reduced power cost on your energy bill. Comprehensive protection mechanism including OPP, OVP, UVP and SCP provides solid protection for system components. Its 120mm fan uses sleeve bearing and features Smart and Silent Fan Control (S2FC) for the perfect balance between operation noise and cooling performance, so you can game, work and surf with great peace of mind.

    Seasonic S12III 550W 80+ Bronze

    Seasonic USA

    High Efficiency, 80 PLUS Bronze Certified


    Seasonic S12III 550W 80+ Bronze

    Smart and Silent Fan Control

    Seasonic USA Seasonic S12III 550W 80+ Bronze

    Improved Compatibility with the Latest Intel and AMD Platforms


    Seasonic USA


    The 80 PLUS® Bronze certification indicates that a high percentage of the electricity is converted into useful power, therefore there is less heat lost and more money saved on the electricity bill. The 80 PLUS® Bronze certification guarantees greater than 82 %, 85 % and 82 % efficiency at 20 %, 50 % and 100 % operating loads, respectively. Sea Sonic’s Bronze Series is an economical choice with great performance and high built-in value.


    The intelligent thermal circuit feature is designed to find the optimal balance between the necessity to cool the components and the need to run the power supply in the most silent manner possible.


    • 80 PLUS® Bronze certified
    • Fixed cables
    • Tight Voltage Regulation
    • S2FC – Smart and Silent Fan Control
    • 5 years warranty

    Technical Details

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    Technical Specifications
    80PLUS® Bronze
    Form Factor Intel ATX 12 V
    Dimensions 140 mm (L) x 150 mm (W) x 86 mm (H)
    Fan Information Fan Size 120 mm
    Fan Control Seasonic S2FC
    Fan Bearing Sleeve bearing
    Life Expectancy 30,000 hours at 40 °C, 15 % – 65 % RH
    Cable Information Modularity Fixed cable
    Cable type Flat black cables
    Electrical Features Operating Temperature 40 °C
    MTBF @ 25 °C, excl. fan 100,000 hours
    AC Input Full Range
    Protection OPP, OVP, UVP, SCP
    Safety and Environmental Safety and EMC cTUVus, TUV, Gost-R, CB , BSMI, CCC, CE, FCC, C-tick
    Environmental Compliance Energy Star, RoHS, WEEE, REACH
    Warranty 5 Years
    Power Output
    AC Input Voltage: 110 V – 240 V
    Current: 10 A – 5 A
    Frequency: 50 Hz – 60 Hz
    DC Output Rail +3.3 V +5 V +12 V -12 V +5 VSB
    Maximum Power 20 A 20 A 54 A 0.3 A 2.5 A
    100 W 648 W 3.6 W 12.5 W
    Total continuous power 550 W
    Connector Connector Count Cable Length
    Main Power (24/20 pins) 1 1 x 550 mm – attached
    CPU (8/4 pins) 1 1 x 600 mm – 8/4 pins attached
    PCIe (8/6 pins) 4 2 x 550 + 150 mm – 8/6 pins attached
    SATA 6 2 x 450 + 120 + 120 mm – attached
    Peripheral 3 1 x 450 + 120 + 120 mm – attached
    Floppy 1 1 x 120 mm – end connector of the peripheral cable
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