RRABxG and RSABxG Series Power Supplies

RRAB 1+1_APM_FR-6 RSAB750G -3 RSAB750G -2
RRAB 1+1_APM_RR-6  


RRABxG (x=450,550, 650, 750, 1200, 1400) complete power supply series with the output power range from 450W to 1400W and with +12V & +5Vsb output rails or ATX output rails for 1U system application. The power supply system consists of one (1), two (2), or three (3) power supply modules providing the +12V & +5Vsb output rails and one (1) power distribution backplane providing the removable or redundancy function of the power supply modules and also generating the +5V, +3.3V, and -12V output rails which are powered by +12V output.

The power supply module (RSABxG; x=450, 550, 650, 750W) is capable of “HOT SWAP” exchanging with active current sharing and OR-ing isolation MOSFETs built in for +12V output, and droop current sharing and OR-ing isolation diode built in for +5Vsb output. The AC input is rated 90-264Vrms with power factor corrected (PFC > 0.95).

A 38mm high reliable Sanyo Denki fan is installed to the power supply module for cooling the power supply module, power devices on the distribution backplane are part of the system.



Voltage/Current Label Rating Parameter Min/ Nominal Input/ Max/ Unit
Vin Voltage 90/ 100-240/ 264/ Vrms
Vin Frequency 47/ 50-60/ 63/ Hz
Vin Current 6.0 A
Vin Current (400W) 8.0 A
Vin Current (550W) 10.0 A
Vin Current (650W) 10.0 A
Vin Current (750W) 10.0 A
Vin Current (1200W) 10.0 A per module
Vin Current (1400W) 10.0 A per module
Inrush current The inrush current of power supply module is less than 30A under the conditions of 240Vrms input and 25C ambient cold start.


DC Output Voltage +12V Range ±5%
+5V Range ±5%
+3.3V Range ±5%
-12V Range ±10%
+12V Range ±5%
+5Vsb Range ±5%
450W DC Output Load Distributions +12V, 2~37A
+5V, 0~19/35A (1/2 module)
+3.3V, 0~21/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
550W DC Output Load Distributions +12V, 2~45A
+5V, 0~24/35A (1/2 module)
+3.3V, 0~24/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
650W DC Output Load Distributions +12V, 2~54A
+5V, 0~24/35A (1/2 module)
+3.3V, 0~24/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
750W DC Output Load Distributions +12V, 2~62.5A
+5V, 0~24/35A (1/2 module)
+3.3V, 0~24/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
1200W DC Output Load Distributions +12V, 2~100A
+5V, 0~24/35A (1/2 module)
+3.3V, 0~24/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
1200W DC Output Load Distributions +12V, 2~116.5A
+5V, 0~24/35A (1/2 module)
+3.3V, 0~24/35A (1/2 module)
-12V, 2~0.8A
+5Vsb, 0~3.0A
DC Output Efficiency The power supply efficiency, with one (1) power supply module ON only (for 450W~750W), and with two (2) power modules ON only (for 1200W~1400W), is 80% minimum measured at 20%, 50%, full load and nominal line input, which is 115Vrms and 230Vrms conditions.
Over Voltage Protection (OVP) 130% maximum for +12V output
150% maximum for +3.3V and +5V outputs
Over Temperature Protection Internal temperature sensing over 55C will shut down PS. Automatic recovery.
Over Current/Short Circuit Protection Output short circuit is defined as any output impedance of less than 0.1 ohms.

Signals, Indicators, and Controls

DC Power Indicator
  1. Green color – Power module is ON and working properly.
  2. Amber color – Power module is under Standby Mode.
  3. No color – Power module is not working properly.
Audible Alarm & TTL Signal The Audible alarm and TTL signal are available from the signal card located on the backplane
Fan Failed Signal (I2C) The Rotation Detector O/P signal is generated by fan.
Temperature Warning Signal (I2C) The Temperature Warning signal: “0” PS is under normal condition and “1” PS is under full load and over 55C


Weight 6~9 lbs
Dimension 355mm (L) x 106mm (W) x 41.3 (H) (dual Module)
355mm (L) x 166mm (W) x 41.3 (H) (triple Module)

Operating Environment

Temperature Operating +0C to +50C
Non-operating -40C to +85C
Cooling 38mm high reliable fan.
Relative Humidity Operating 10% to 90% relative humidity (non-condensing)\
Non-operating 5% to 95% relative humidity (non-condensing)
Altitude Operating 0 to 10,000 feet
Storage 0 to 50,000 feet
MTBF 100K hours minimum at full load 25oC
Maintenance No routine maintenance is specified or required.

Safety, Regulatory and EMC

RoHS Compliance yes
Emissions power supply can comply with FCC Part 15 and EN55022: 2006 meeting Class B for both conducted and radiated emissions with a 3 dB margin.
Immunity The power supply can comply with EN 55024: 1998+A1: 2001+A2: 2003.
CE EN 55022: 2006 Class B
EN 61000-3-2: 20006 Class D
EN 61000-3-3: 1995+A1: 2001+A2: 2005
EN 55024: 1998+A1: 2001+A2: 2003, including
IEC 61000-4-2: Criterion A
IEC 61000-4-3: Criterion A
IEC 61000-4-4: Criterion A
IEC 61000-4-5: Criterion A
IEC 61000-4-6: Criterion A
IEC 61000-4-11: Criterion A/B/B
Safety cUL



Specification: PDF