What are 48V Telecom Rectifier Modules?
Telecom base station equipment (BBU, RRU, transmission devices) relies on the global standard -48V DC power system.
Rectifier modules are the core AC-DC conversion units:
Convert mains AC power into stable 48V DC
Power telecom loads directly and charge backup batteries
Enable seamless battery takeover with zero delay during mains failure
Key advantages of the -48V standard:
✅ Below 60V extra-low safety voltage for safe field maintenance
✅ Parallel connection design, no power cut during switching
✅ Mature supply chain and global compatibility
5G brings higher requirements for rectifiers:
High efficiency (＞96%) to cut energy cost
N+1 redundancy & hot-swap for maintenance without shutdown
Wide AC input range for unstable/weak grids
Wide temperature performance for outdoor cabinets
High power density, up to 4kW in 1U size
Tonhe Technology: 48V Rectifier Modules & Services
About Tonhe Technology
Founded in 1998 | SZSE: 300491
Pioneer of full soft-switch power conversion technology in China
Over 280 patents; ~10% of revenue invested in R&D
Products exported to more than 30 countries
Main applications: 5G base stations, data centers, power communication networks
Product Portfolio
▫️ TH48T50ZZ / TH48D30ZZ / TH48D20ZZ Series
Output: 50A / 30A / 20A
Natural cooling, compact, high reliability
Standard RS-485 remote communication interface
Fit for traditional and 5G base stations
▫️ TH48T75NZ-S (Flagship 4875 Platform)
Rated power: 4000W, 1U form factor
Output voltage: 42V–58V adjustable
AC input: 85–300VAC, stable derated operation under weak grid
Peak efficiency: 97%, PF ≥0.99, THD ≤5%
Support hot-swap, parallel current sharing, N+1 redundancy
Operating temperature: -40℃ ~ +75℃
Weight: only 2.2 kg
Certifications: TUV, CE, UL, FCC, CB
Economic Benefit
Compared with 90% efficiency ordinary modules:
Single 4000W unit saves ~0.32 kWh per hour at full load
Annual saving: around 2810 kWh
Great electricity cost reduction for base stations with multiple modules
Our Services
✅ One-stop power solution: rectifiers + intelligent monitoring + BMS + power cabinet
✅ Remote control via RS-485 / CAN: voltage adjustment, current sharing, alarm
✅ Flexible N+1 redundancy and capacity expansion
✅ OEM & ODM customization available
✅ Full lifecycle support: solution design, on-site commissioning, global after-sales
✅ Help telecom operators speed up deployment and guarantee stable network operation
