Tianjin Estel Electronic Science and Technology Co.,Ltd
| Payment Terms | T/T, Western Union |
| Supply Ability | 5000 |
| Delivery Time | 20~35 |
| Packaging Details | wooden case |
| Brand Name | Telecom Rectifier Unit (TRU) |
| Model Number | ET2305000 |
| Certification | CE UL FCC |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 5000 |
| Delivery Time | 20~35 | Packaging Details | wooden case |
| Brand Name | Telecom Rectifier Unit (TRU) | Model Number | ET2305000 |
| Certification | CE UL FCC | Place of Origin | China |
| High Light | 3000W telecom rectifier module ，high-efficiency rectifier module with forced air cooling ，CE certified telecom rectifier 42-58VDC | ||
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.
| Item | Configuration |
|---|---|
| Operating temperature | –10℃ ~ +75℃ |
| Note: Normal operation at –10℃ ~ 55℃; | |
| Power derated to 80% from 55℃ to 65℃, and to 40% from 65℃ to 75℃. | |
| Startup at –40℃ possible after input is powered on. | |
| Storage temperature | –40℃ ~ +75℃ |
| Relative humidity | 5% ~ 95% (no condensation) |
| Altitude | ≤4000m (derated 1℃ per 200m above 3000m) |
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)
Dimensions: 41.5mm (H) × 106.4mm (W) × 291mm (D)
Weight: <2kg
Cooling: Forced air cooling with built-in fan (linear speed control)
Graphs and curves included in original manual (Output current, Input voltage derating, Temperature derating, Efficiency curve)
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℃
Gold finger pin layout
| Pin | Function |
|---|---|
| 1, 2 | Output 48V– |
| 3, 4 | Pre-charge |
| 5, 6 | Output 48V+ |
| 7 | Group address |
| 8 | Inner address |
| 13 | CANL |
| 14 | CANH |
| 31, 32 | Protection ground |
| 33, 34 | AC Neutral |
| 35, 36 | AC Phase |
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
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2002
Total Annual:
15 Million-20 Million
Employee Number:
101~200
Ecer Certification：
Verified Supplier
Introduction Tianjin Estel Electronic Science and Technology Co., Ltd (ESTEL(GUANGDONG)TECHNOLOGY CO., LTD), located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and tech... Introduction Tianjin Estel Electronic Science and Technology Co., Ltd (ESTEL(GUANGDONG)TECHNOLOGY CO., LTD), located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and tech...
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