Product Brief
• This is Tonhe standard 19-inch rack-mount 48VDC distribution panel, matched with Tonhe TH48 series rectifier modules.
• Adopts standard 19” cabinet installation structure, optional 2U/3U height, suitable for indoor telecom cabinets.
• Equipped with multi-channel output branches, optional MCB or fuse branch protection.
• Built-in DC SPD lightning protection, bus and branch voltage & current monitoring circuit.
• Supports RS485 Modbus-RTU communication, connects with Tonhe THJK monitoring unit for remote alarm.
• Centralized power distribution and protection for 48V DC loads, realizes stable and safe power supply.
• Features compact layout, convenient wiring, support hot maintenance, 7×24 hours continuous operation.

Product Parameters
| Item |
Specification |
| Product Name |
19-inch 48VDC Distribution Panel, Rack Mount |
| Brand |
Tonhe |
| Rated Voltage |
48VDC(adjustable range: 42~58VDC) |
| Rated Input Current |
100A / 250A / 400A (Optional) |
| Output Branches |
Customizable: 6/8/10/12/16 ways |
| Branch Protection |
Miniature circuit breaker / fuse optional |
| Monitoring |
Bus voltage, branch current, branch ON/OFF status, over-current & over-voltage alarm |
| Communication |
RS485, Modbus-RTU, compatible with Tonhe THJK monitoring unit |
| Lightning Protection |
Built-in DC SPD, level C protection |
| Mounting |
Standard 19” rack mount, 2U / 3U height optional |
| Protection Grade |
IP20 (Indoor use) |
| Working Temperature |
-10℃ ~ +40℃; Wide temp version: -40℃ ~ +55℃ |
| Cooling |
Natural convection |
| Dimension (W×D×H) |
482.6mm × 250mm × 88.9mm (2U) |
| Compliance |
YD/T, CE, IEC60950 |
| Matching Rectifier |
TH48D30NZ-S, TH48D50NZ-S-2, TH48T75NZ-S |
Product Advantages
1. Standard 19-inch rack design, compatible with all standard telecom cabinets, easy installation and hot maintenance
2. Modular branch configuration, support customized branch current rating, fuse/MCB two protection options
3. Integrated intelligent monitoring: real-time data upload, remote alarm, cooperate with Tonhe power monitoring system
4. Multi-level safety protection: overvoltage, overcurrent, short circuit, reverse connection, lightning surge protection
5. Perfect matching with Tonhe TH48 rectifier series, stable bus voltage, low ripple, high system consistency
6. High-strength cold-rolled steel shell, anti-rust spray coating, neat internal wiring, easy inspection & troubleshooting
7. Long service life, low failure rate, suitable for continuous 24/7 unattended operation
Application Scenarios
5G macro station / communication room, telecom operator 48V DC power system
Edge computing room, small & medium data center HVDC auxiliary distribution
Railway, highway monitoring, oil & gas industrial control 48V power supply
Solar off-grid / hybrid energy storage 48V DC distribution system
Security monitoring, broadcast, optical transmission equipment power supply
Tonhe embedded rectifier subrack supporting distribution unit

Export Cases
Case 1: Nepal Telecom 5G Station Project
Tonhe 19” 48VDC distribution panels together with TH48D50NZ rectifiers were supplied for 120+ rural communication sites, stable operation under high temperature & dust environment.
Case 2: South Africa Edge Data Room Project
Batch 250A 12-branch distribution panels, matched with Tonhe embedded power frame, passed local CE and telecom field test.
Case3: Turkey Industrial Control Power Project
Custom 16-way branch version with SPD and full monitoring function, used for factory automation 48V control power.
Case4: Philippines Island Solar Telecom Project
Wide-temperature version distribution panels for off-grid solar-battery telecom power, adapt to big day-night temperature difference.
Case5: Southeast Asia ISP IDC Mini DC Power Project
2U compact distribution panels for small IDC, easy stacking and capacity expansion.

FAQ
Q1: Is this DC distribution panel compatible with other brand 48V rectifiers?
A1: It supports most standard 48V rectifiers. If you use non-Tonhe rectifier, we need to confirm bus current and communication protocol in advance. Best performance when matched with Tonhe TH48 series rectifiers.
Q2: Can I customize the quantity and current rating of output branches?
A2: Yes. We support custom branch quantity (6~16 ways) and each branch rated current, MCB or fuse protection as requested.
Q3: What certificates can you provide for export?
A3: We can provide CE test report, factory inspection certificate, packing list, commercial invoice, Form E / Form A etc. according to your destination country requirement.
Q4: Does this panel support remote monitoring and alarm?
A4: Yes. Standard RS485 Modbus-RTU interface. It can connect with Tonhe THJK monitoring unit to realize remote data view and fault alarm.
Q5: What is the warranty period?
A5: Standard 24 months warranty. We provide technical support, spare parts service and remote troubleshooting.