- The PROTON PC Power Supply Series by CHIEFTEC is 80 PLUS BRONZE certified, delivering energy-efficient performance for modern computing needs.
BDF-400S
PROTON SERIES

OVERVIEW
With the PROTON Series, CHIEFTEC embraces advanced DC-to-DC power supply technology, enabling better energy conservation, improved efficiency, and enhanced power stability. This translates into greater durability and longer lifespan for system components. Certified with 80 PLUS BRONZE, the PROTON Series ensures reliable performance with a strong focus on efficiency.
SPECIFICATIONS












Model | PROTON 400W |
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Article no. | BDF-400S |
EAN code | 4710713231252 |
Weight (without/with package) | 1.40kg / 1.75kg |
AC Input | 115-230V / 10A |
Frequency | 50 - 60Hz |
+5V | 18A |
+3,3V | 18A |
+5V & +3,3V combined | 90W |
+12V1 | 33.36A |
+12V2 | - |
+12V1, +12V2 combined | 400W |
P.F. | >0,9 |
-12V | 0,3A / 3,6W |
+5VSB | 2,5A / 12,5W |
Maximum Power | 400W |
20+4 PIN ATX | 1 |
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8 PIN EPS(4+4) | 1 |
6 PIN PCIe | 1 |
SATA | 3 |
MOLEX | 3 |
20+4 PIN ATX | 400 |
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8 PIN EPS(4+4) | 400 |
6 PIN PCIe | 400 |
SATA | 400/150/150 |
MOLEX | 400/150/150 |
ATX12V Version | ATX 12V 2.3 |
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Efficiency | 80+Bronze |
Dimension (DxWxH) | 140 mm x 150 mm x 86 mm |
PFC | Active PFC |
Fan | 120mm silent fan |
Security | AFC (Automatic Fan speed Control) OCP (Over Current Protection) OPP (Over Power Protection) OTP (Over Temperature Protection) OVP (Over Voltage Protection) SCP (Short Circuit Protection) SIP (Surge & Inrush Protection) UVP (Under Voltage Protection) |
Warranty | 24 Months |