Specifications

850W Power Supply QSSC-S4R Technical Product Specification
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12. 850W Power Supply
This section describes some of the QSSC-S4R Power Supply features. For a complete specification of the 850W high
efficiency power supply, please see the QSSC-S4R 850W Power Supply Specification. The QSSC-S4R uses a 2+2/ or
3+1 redundant 850W high efficiency power supply. It has 2 outputs: 12V and 3.3Vsb. It is a current sharing power
supply with auto ranging input and power factor corrected.
The physical size of the power supply enclosure is intended to accommodate power ranges from 800watts. The power
supply size is 3.72-inches/95mm (W – max) x 15.75-inches/400mm (D) x 1.57-inches/40.5mm (H – max) and has a
Molex P/N 0459846243 connector for the DC outputs and signals. Each power supply module has a handle to assist
insertion and extraction without tools. The AC plugs directly into the external face of the power supply.
The output rating of the power supply is 850W when operated between 200VAC and 240VAC. Modules are current-
sharing and have auto-ranging input. The power supply modules have universal AC input with Power Factor Correction
(PFC) Distributed Power Supplies (DPS). The AC input receptacle is an IEC-320 C14 15A rated for a 250 VAC
minimum.
This describes the +12V output power requirements from the power distribution board for one to four 850W power
supplies installed and functional.
Note: The combined continuous total power limit for all outputs is 2320W maximum.
12.1 Mechanical Outline
The mechanical outline is shown in the below figure.
Figure 52. 850W High Efficiency Power Supply Unit Drawing
12.2 Low Profile Hybrid Interconnect Connector
Low profile Hybrid (LPH) Interconnect system Molex P/N 0459846243 (24 signal pins, 6 power circuits) – on PS side.
Pin Assignment:
Pin A1 ~ A12, B1 ~ B12 --- Signal Pins
Pin P1 ~P6 --- Power Circuits
Table 44. S4R Power Supply Connector Signal Description and Pinouts
Pin Signal_Name Pin Signal_Name
A1 12VRS B4 CRMODE
A2 RETURNS B5 PWOK