THERMALTAKE 

THERMALTAKE PS-SPD-0550NNFABU-3 Smart BX3 550W Bronze

Mfg Part Number:  PS-SPD-0550NNFABU-3  
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Price: $73.99
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Last Updated: Aug 10, 2025
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Unmatched Reliability ATX 3.1 Power Supply

The Smart BX3 series is designed to meet ATX 3.1 standards, offering 550W, 650W, and 750W options. It's perfect for budget-conscious users seeking an efficient and reliable entry-level power supply, backed by a solid 5-year warranty.

ATX 3.1 Ready

Smart BX3 series is fully compatible with ATX 3.1 specifications which supports up to 200% power excursion, reaches 60% low load efficiency and complies with required power supply timing standards.

Be Smart, Stay Quiet

Equipped with a 120mm fluid bearing fan for superior airflow. Additionally, the built-in Smart Zero Fan spins only when the load reaches a certain percentage to minimize unwanted noise.

High Quality 105°C/221°F Main Capacitor

High quality main capacitor greatly improves the power supplies durability and ensures the Smart BX3 series is stable and reliable.

High Amperage Single +12V Rail & DC to DC Design

Powerful single +12V rail can properly deliver the power you need for the best compatibility. The use of DC to DC circuit design provides very stable operation and enhanced voltage regulation.

  • Over Current Protection
  • Over Voltage Protection
  • Under Voltage Protection
  • Over Power Protection
  • Short Circuit Protection
  • Over Temperature Protection

Built-in Industrial Grade Protection

To protect the hardware, Smart BX3 is built with industry grade protections: OCP(Over Current Protection), OVP (Over Voltage Protection), UVP(Under Voltage Protection), OPP(Over Power Protection), SCP(Short Circuit Protection), OTP(Over Temperature Protection).

Non-Modular Flat Cable Design

Smart BX3 series comes with soft black cables, designed to make cable installation an easy task while fully powering the system at optimal voltages.

80 PLUS Bronze-Certified and Intel C6/C7 States Ready

Smart BX3 Bronze series saves energy through its high energy efficiency up to 85% and is certified to 80 PLUS® Bronze. It has been optimized to work with all generations of Intel's processors to achieve maximum energy saving.

Main Specification
General Information
Manufacturer Thermaltake Technology Co., Ltd
Manufacturer Part Number PS-SPD-0550NNFABU-3
Manufacturer Website Address http://www.thermaltakeusa.com
Brand Name Thermaltake
Product Line Smart BX3
Product Model SPD-0550AH2NLB-3
Product Name Smart BX3 SPD-0550AH2NLB-3 550W Power Supply
Product Type Power Supply
Technical Information
Specification Compliance ATX 3.1
Efficiency 85%
Power Factor Correction (PFC) Active
Number of Fans 1
Protection Type Over Current
Protection Type Over Power
Protection Type Over Voltage
Protection Type Under Voltage
Protection Type Short Circuit
Protection Type Over Temperature
Modular No
Power Description
Number of +12V Rails 1
Input Voltage 230 V AC
Input Voltage 120 V AC
Output Voltage 3.3 V DC
Output Voltage -12 V DC
Output Voltage 5 V DC
Output Voltage 12 V DC
Output Voltage 5 V SB
Output Voltage Detail 5 V DC @ 16 A
Output Voltage Detail 5 V DC @ 3 A
Output Voltage Detail -12 V DC @ 0.3 A
Output Voltage Detail 12 V DC @ 45.85 A
Output Voltage Detail 3.3 V DC @ 16 A
Output Current 300 mA
Output Current 45.85 A
Output Current 3 A
Output Current 16 A
Output Power 550 W
Input Frequency 60Hz
Environmental Conditions
Minimum Operating Temperature 41°F (5°C)
Maximum Operating Temperature 113°F (45°C)
Physical Characteristics
Form Factor Internal
Height 3.4"
Width 5.9"
Depth 5.5"
Miscellaneous
Certifications & Standards
  • CE
  • UKCA
  • LVD
  • UKCA
  • FCC
  • ICES
  • TUV
  • CB
  • cTUVus
  • BSMI
  • CCC
Environmentally Friendly Yes
Energy Efficiency Certification 80 Plus Bronze
Warranty
Limited Warranty 5 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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