Introduction
Reliable -48V DC power is the backbone of modern telecom networks, from urban central offices, outdoor 5G base stations, FTTX access sites to edge data centers. For global telecom contractors, network operators and system integrators, selecting a stable, certified factory supplier of 48V telecom rectifier modules directly determines network uptime and total operation cost.
Tonhe Technology (Shijiazhuang Tonhe Electronics Technologies Co., Ltd.), a listed high-tech enterprise (300491) founded in 1998, is a trusted factory manufacturer of 48V telecom rectifier modules serving global telecom projects. Our TH48 series rectifier modules are widely deployed across multi-region telecom infrastructure projects, delivering stable, intelligent and energy-saving DC power solutions for worldwide telecom clients.
Tonhe Factory Introduction
Tonhe’s manufacturing base is located in Shijiazhuang, Hebei, China, covering 53,000 ㎡ production area with a yearly capacity of 1.2 million sets of standard power modules.
Fully automatic SMT lines, 3D AOI inspection, automatic potting, FCT full-function test and constant-temperature aging workshops for strict quality control.
Certifications: ISO9001, ISO14001, IATF16949, CE, RoHS, meeting international telecom equipment standards.
R&D team accounts for around 30% of total staff, with over 280 authorized patents, independent core resonant soft-switch power conversion technology, no third-party core chip dependency for the main power topology.
Full in-house workflow: R&D design, prototype verification, mass production, reliability testing, after-sales technical support.
48V Power Module Solutions for Telecom
Our TH48 series 48V telecom rectifier modules are designed to convert AC mains to stable -48V DC power for telecom loads, supporting flexible system configuration for different project scales:
Standalone module for retrofitting existing telecom power cabinets
Modular rack system with N+1 redundant parallel configuration for base stations and central telecom rooms
Hybrid power solution: rectifier module + battery management unit + monitoring module for off-grid / weak grid outdoor telecom sites
Product portfolio covers 30A / 50A /75A models (TH48D30NZ-S, TH48D50NZ-S-2, TH48T75NZ-S), available in fan-cooled and self-cooled versions.
Suitable scenarios: 5G macro & micro base stations, telecom transmission rooms, FTTX OLT cabinets, edge computing rooms, rural remote telecom sites.
Product Advantages
1.Ultra-high energy efficiency ≥96% — Reduce site electricity expense and carbon footprint, fit green telecom network requirements. Power factor up to 0.99.
2.High grid adaptability — Wide AC input voltage range, stable operation under unstable grid conditions common in Africa, Southeast Asia, Middle East and Eastern Europe.
3.N+1 redundancy & hot-swap design — Modules can be replaced online without system power cut, minimizing site downtime and maintenance cost.
4.High power density, compact 1U form factor — Save cabinet space, lower transportation and site construction cost.
5.Full digital intelligent control — Built-in RS485 / SNMP / LAN interface for remote monitoring, unattended site management, real-time fault alarm and data upload.
6.Strong environmental adaptability — Wide working temperature range, anti-dust, anti-electromagnetic interference, suitable for outdoor cabinet deployment.
Product Key Features
• Full digital resonant soft-switch topology, low heat generation and long service life
• Multiple built-in protections: over-voltage, under-voltage, over-current, short-circuit, over-temperature protection
• Intelligent temperature-controlled fan: low noise, automatic speed adjustment
• Standard 19-inch rack-mount, pluggable hot-swap structure
• Automatic current sharing in parallel operation
• Adjustable 48V DC output voltage, compatible with lead-acid and lithium battery charging
• Complete fault diagnosis and alarm reporting
Value Tonhe Factory Delivers to Global Clients
1.Factory direct pricing — No middle agent markup, competitive unit price for bulk telecom project procurement.
2.Customization support — Custom firmware, output parameter tuning, customized labeling, special packaging and protocol adaptation for regional telecom standards.
3.Complete technical documentation — Datasheet, test reports, certification files, BOM, installation manual, MODBUS/SNMP protocol document for tender submission and site commissioning.
4.Short lead time & stable mass delivery — Large inventory of mainstream TH48 models for urgent project orders; scalable production for large national telecom rollout projects.
5.On-site & remote engineering support — Pre-sales system sizing guidance, technical training, remote debugging and global after-sales service.
6.Long-term spare parts supply — Multi-year spare module availability for network lifecycle maintenance.
Overseas Telecom Cooperation Project Case
Tonhe 48V rectifier modules have been exported and deployed in multiple cross-border telecom infrastructure projects across Southeast Asia, Middle East, Russia and Eastern Europe.
Typical Case: Southeast Asia Rural 5G Base Station Rollout Project
A regional telecom system integrator required reliable 48V DC power for hundreds of outdoor remote 5G sites with unstable local power grid. Tonhe supplied TH48D30NZ-S and TH48D50NZ-S rectifier modules, configured with N+1 redundancy and battery management.
Our wide-input rectifiers tolerated frequent grid fluctuation and voltage sags.
Remote monitoring function reduced on-site inspection workload for hundreds of unattended rural towers.
The project achieved 99.98% power system uptime, and the client extended the framework agreement for the next phase network expansion.
Other references: Middle East urban telecom room upgrade, Eastern Europe fiber access network power retrofitting projects.
Why Choose Tonhe as Your 48V Telecom Rectifier Module Supplier
1.Listed power electronics manufacturer with proven telecom-grade reliability, not a trading company. All modules are fully self-developed and produced in our own factory.
2.Deep telecom power expertise — We focus on telecom DC power systems for decades, fully understand global telecom operators’ requirements for uptime, redundancy and remote management.
3.Full certification package for international tender, ready for bidding documents in global telecom infrastructure tenders.
4.Flexible cooperation mode: small batch sample order, medium-volume framework contract, large-scale national network rollout project support.
5.One-stop power solution capability: not only individual rectifier modules, but we can support full telecom power cabinet integration if required.
6.Global export experience: familiar with international shipping, documentation, Form E and other certificate requirements for different regions.
Conclusion
For your upcoming global telecom infrastructure projects, Tonhe’s TH48 series 48V telecom rectifier modules offer high efficiency, high reliability and intelligent remote management backed by our in-house factory and engineering team.
Contact us today to get datasheets, sample quotation and customized power system design for your telecom project.
