eSure Rectifier


eSure™ Rectifier


The eSure™ R48-5800e rectifier converts 260 to 530Vac 3-phase AC supply voltages into stable nominal-48V DC voltage adjustable to the needs of the application. The R48-5800e is a constant power rectifier designed with the lates​​t patented switch-mode technology using DSP (Digital Signaling Processor) functionality for efficient operation.

For a higher load capacity, rectifiers can be connected in parallel and intelligent control can be added with the help of a separate controller.
Brochures and Datasheets
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  • Optimized depth-reduced footprint allows installation in short-depth racks and cabinets
  • DSP (Digital Signaling Processor)-means fewer components, optimized operation and active load sharing for increased reliability
  • Compliant with global standards-delivers quality, performance and reliability no matter what the application or location demands
  • High efficiency, near 96.2%-reduces power consumption for lower operating costs
  • Hot pluggable-facilitates future extensions
  • Wide input voltage range-operates in the most demanding environments where input voltage changes
  • Wide temperature operating range (-40°C / -40 °F to +65°C / 149°F) -meets the harshest climatic environment requirements
Features and Benefits

AC Input


Input Voltage, Nominal

380/480 V

Input Voltage, Permitted Variation

260 to 530 Vac

Line Frequency

45 to 65 Hz

Max Input Current

13 A

Power Factor


THD (Total Harmonic Distortion)

<5% from 50 to 100% of rated load

DC Output


Output Voltage, Adjustment Range

-42 to -58 V DC

Output Power

5800W@Vout >48VDC

Output Power, Derated for Input Voltage

See Diagram

Output Current


Output Current limit set Point

0 to 120 A


96.2% peak

Psophometric noise (system)

<2 mV typical; <32 dBrnc typical

Temperature Derating

See diagram

Control and Monitoring


Rectifier Alarm and Signaling

Alarm and status reported via CAN bus to system Controller

Visual Indications

Green LED = Normal operation; Yellow LED = Alarm;


Red LED = Failure; Flashing red LED = Fan failure



Temperature Range, Operating

-40 to +65°C, -40 to +149°F

Temperature Range, Storage

-40 to +70°C, -40 to +158°F

Relative Humidity

0 to 95%


2000 m, 6560 ft at full power


ETSI EN 300 386 class B, FCC CFR 47 Part 15 class B,
Telcordia GR-1089-CORE class B


IEC 60950, EN 60950, UL 60950, Telcordia GR-63-CORE



Dimensions (H×W×D)

85.5×245×380mm / 3.37×9.65×14.96 inches


6.5 kg / 14 lbs

Other parts


Controller Units

See separate ACU/ACU+ and SCU/SCU+ datasheets

Ordering information



Product name

Rectifier 48V,5800W



Technical Specifications