Product Overview

MR483000HG2B-GS is a power supply device that converts standard AC voltage into stable 48Vdc for communication power supply systems.
For a larger load capacity, the rectifier modules can be connected in parallel, or an additional independent monitoring module can be used for intelligent control.

The rectifier module is a plug-in modular unit designed to be compatible with racks and cabinets.

Operating Environment

Electrical Characteristics

Input parameters

• Operating Voltage: 85Vac to 290Vac

• Frequency: 45Hz ~ 66Hz (Rated: 50/60Hz)

• Input current: ≤18A

• Power factor: ≥0.99 (at 220Vac, 20%~100% load)

• THD: ≤5% (at 50%~100% load)

Output parameters

• Output voltage: 42VDC ~ 58VDC (Rated: 53.5VDC)

• Linear power derating:

  • 3000W from 176VAC to 290VAC

  • Derates to 1250W from 175VAC to 85VAC

• Voltage regulation: ≤±0.6%Vo

• Ripple and noise: ≤200mVp-p (≤20MHz bandwidth)

• Standby power: ≤4W

• Startup time: 3s ~ 8s

• Hold-up time: >10ms

• Phone noise: ≤2mV

• Wideband noise voltage:

  • ≤50mV (3.4kHz ~ 150kHz)

  • ≤20mV (0.15MHz ~ 30MHz)

Mechanical Characteristics

• Dimensions: 41.5mm (H) × 106.4mm (W) × 291mm (D)

• Weight: <2kg

• Cooling: Forced air cooling with built-in fan (linear speed control)

Output Characteristics

• Graphs and curves included in original manual (Output current, Input voltage derating, Temperature derating, Efficiency curve)

Other Features

Protection features

• Input over-voltage:

  • 290~300Vac → warning light, output normal

  • 300Vac → output off

• Under-voltage:

  • <80±5Vac → output off

  • 80~90Vac → auto recovery

• Output over-voltage:

  • Internal: 58.5VDC–60.5VDC, lockout, recover by repowering

  • External: >63VDC for >500ms, lockout

• Current limiting: See output curve

• Short-circuit: Long-time tolerance, auto-recovery

• Over-temperature: Protected

• Certifications: CE, UL, CB

  • UL/EN/IEC 62368-1

• EMC: EN 55032 Class B, EN 55035, IEC 61000-3-2/3

• Lightning protection: 5kA (8/20μs)

• MTBF: >500,000 hours @ 25℃

• Noise: ≤55dB(A) @ 40℃

Interface Description

Gold finger pin layout

Module Panel Description

Indicators on the front panel:

• Power (Green)

  • On: Normal

  • Off: No input / input abnormal

  • 4Hz flash: Manual query status

• Alarm (Yellow)

  • Off: No alarm

  • On: Current limit

  • 0.5Hz flash: Comm loss

  • 4Hz flash: Address error

Fault (Red)

• On: No output / internal fault

• Over-voltage lock: Unplug for 1 minute to reset