Guardian 48V Rectifier

Product Information

The Guardian FMPe30.48J 62.5 amp rectifier incorporates resonant technology to reduce component stresses, providing increased system reliability and a best-in-class efficiency of 96.2% peak. This 3000 watt rectifier features a wide input operating voltage range to maximize power availability within demanding utility power environments.

These compact 62.5 amp rectifiers support up to 15kW in a 1RU 23” shelf. A wide variety of distribution options are available to provide the maximum system flexibility for a wide range of communications applications that demand efficiency, reliability, and flexibility including wireless base stations, remote switches, and broadband access.

Three Year warranty
Features and Options
  • High efficiency and energy saving
  • 96.2% peak efficiency
  • Leading power density of up to 32W/in3
  • Rugged input voltage range
  • Thermal protection
  • Hot-swappable
  • International standards compliance
Voltage Operating Range: 85-275VAC
Permitted variation: 85-300VAC
(L-PE and N-PE <250VAC)
Current <13.1A @ 240VAC
<18.5A @ 110VAC
Frequency 47-63Hz
Power Factor >0.99 at >25% load
Fuse Two 25A fast blow (L & N)
Voltage Range 46-57.6VDC
Power 3000W at ≥185VAC
1720W at 110VAC
1300W at 85VAC
Current 48V NOMINAL

66.5A at ≥185VAC
35.8A at 110VAC
27.1A at 85VAC


56.1A at ≥185VAC
32.1A at 110VAC
24.3A at 85VAC

Derating 18.2W/Vin from 185-85Vin
Efficiency 96.2% peak
Tolerance Vout ±1.0%
Transient Response ±5% at load variation 10-90% or 90-10%
20ms recovery
Load Sharing <5% of nominal current
Ripple <250mV p-p (BW 20 MHz)
Psophometric <2mV, according to CCITT norms
Safety CAN/CSA C22.2 No 62368-1:2014
UL 62368-1:2014
EN 62368-1:2014/A11:2017
Inrush Current ETSI ETS 300 132-1
Harmonics EN61000-3-2
EMC ETSI EN300 386 V.1.3.2
EN61000-6-1, EN61000-6-2
EN61000-6-3, EN61000-6-4
EN55024 performance criterion A
EN55022 Class B
Telcordia NEBS GR1089
Environmental Storage: ETSI EN300 019-2-1
Transport: ETSI EN300 019-2-2
Operation: ETSI EN300 019-2-3
Damp Heat: IEC60068-2-78
MIL-STD-810D section 507.2
Earthquake: GR 63 Core Zone 4


Dimensions, inches (mm) 4.2 W x 14.0 D x 1.6 H (107 W x 355 D x 41 H)
Weight 4.6lbs. (2.1kg)
Cooling Fan-cooled, speed controlled
Insulation 4.25kVDC primary-secondary
2.12kVDC primary-ground
0.2kVDC secondary-ground
Enclosure IP20
Mounting 19in/23in x 1U subrack
up to 4/5 modules
Protection Short circuit
automatic current/power limiting
input/output overvoltage
Alarms Fan failure
Short circuit/arcing protection
High temperature/output voltage
Low output voltage
Input voltage out of range
Low fan speed (warning)
Internal communication failure
LED Indicators Green: AC normal operation
Yellow steady: Low fan speed, High temperature
Yellow flashing: Comms. failure
Red: Module alarm / shutdown
Audible Noise (nominal input) <45dBA @ ≤25°C (50% load)
<60dBA (100% load)
Operating Temperature -40°C to +75°C up to 2000m
Reduced spec -40°C to -20°C
Derated output power from 55°C
linear derating to 75°C
For 3000m altitude derated by 5°C
Storage Temperature -60°C to +85°C
MTBF @ 25°C (without fan) >832,000 hours to
Telcordia (Belcore) SR-332 Iss.1

For more information, please visit the UNIPOWER Brand page for this product HERE