|
375A 18kW 48V DC Power System Rack-Mount Telecom Power Cabinet for 5G Base Stations
375A DC Power System
,18kW Rack-Mount Power Supply
,48V Telecom Power Cabinet
The Vertiv (formerly Emerso n) NetSure 531 A91-S1 is a carrier-grade 19-inch rack-mount DC power system engineered for high-power telecom applications, including macro base stations, LTE/5G coverage, FTTx broadband, IDC equipment rooms, and outdoor communication cabinets. It delivers a stable, adjustable -48V DC output of up to 375A / 18kW with industry-leading efficiency and reliability.
Built with hot-swappable R48-2000e3 high-efficiency rectifiers and intelligent M222S/M830B monitoring controllers, this system supports full front maintenance, remote management, and comprehensive battery protection. It is the preferred high-power rack power solution for mission-critical communication infrastructure.
- Standard 19-inch 8U rack-mount design with high power density and space-saving footprint
- Wide AC input range of 85–300VAC, 45–65Hz, with strong adaptability to unstable grids and generator power
- Stable adjustable DC output of -42V to -58VDC, nominal -53.5VDC, max output current 375A, rated power 18kW
- Supports up to 9× R48-2000e3 high-efficiency rectifier modules, with peak efficiency up to 96% and power factor ≥0.99
- Hot-swappable modules: plug-and-play replacement without system shutdown
- Full front maintenance and front wiring for easy installation and later maintenance
- Intelligent monitoring: real-time data display, fault alarm, and remote communication (RS232/Ethernet/SNMP)
- Intelligent battery management: BLVD/LLVD, temperature compensation, capacity test, and extended battery life
- Wide operating temperature range of -40°C to +70°C, suitable for harsh environments
- Complete protection: OVP, OCP, SCP, OTP, LVBD, surge and lightning protection
- Compliant with CE, UL, NEBS, and global telecom safety standards
| Brand | Vertiv / Emerso n |
|---|---|
| Model | NetSure 531 A91-S1 |
| System Type | 19-inch 8U rack-mount DC power system |
| AC Input | 85–300VAC, 45–65Hz |
| DC Output | -42V to -58VDC; Nominal -53.5VDC |
| Max Output Current | 375A |
| Max Output Power | 18kW |
| Matching Rectifiers | R48-2000e3 (2000W each) |
| Monitoring Unit | M222S / M830B |
| Peak Efficiency | Up to 96% |
| Power Factor | ≥0.99 |
| Cooling | Intelligent fan cooling |
| Maintenance | Full front maintenance and front wiring |
| Dimensions (W×D×H) | 483 × 310 × 356 mm |
| Weight | ≤40 kg (without rectifiers) |
| Operating Temperature | -40°C to +70°C |
| Certifications | CE, UL, NEBS |
| Warranty | 12 Months |
| Application | Telecom, macro base station, FTTx, IDC |
- 4G / 5G macro base stations and outdoor macro sites
- LTE indoor coverage and distributed base stations
- FTTx and optical access network equipment
- IDC data centers and core communication equipment rooms
- High-power industrial control and critical DC power loads
- Outdoor integrated cabinets and harsh-environment sites
We are a professional manufacturer and one-stop solution provider for communication DC power systems, with mature R&D strength, large-scale production capacity, and flexible service modes. We fully support OEM and OBM cooperation, helping global partners create differentiated power products and brands.
Our professional technical team brings years of experience in the power industry. We provide personalized customization covering power configuration, external interfaces, functional parameters, appearance design, and logo printing to satisfy diverse demands from telecom operators, system integrators, and equipment manufacturers.
We offer full-cycle cooperation support from product design, prototype testing, and certification to mass production. With an efficient development process and strict quality management, we help you quickly launch products and build exclusive brand advantages.
We own standardized production workshops and complete production lines. Relying on a stable supply chain and mature production technology, we maintain sufficient inventory and strong production capacity, ensuring on-time delivery even for bulk orders and long-term cooperative supply.
All products pass full-load operation testing, high-low temperature aging testing, safety performance testing, and simulated on-site operation testing before delivery. We adopt high-quality original components and implement strict quality control standards to guarantee long-term stable operation in various harsh environments.
We maintain a complete service system including pre-sales consultation, in-sales technical guidance, and after-sales maintenance. Our technical team responds quickly to provide remote debugging, on-site technical guidance, equipment maintenance training, and spare parts supply, protecting the stable operation of your power system at all times.
Our products have been exported to many countries and regions and are widely applied in communication, data centers, industrial control, new energy, and other fields. With rich global project experience, we can provide targeted power solutions for different regional standards and application scenarios.
We sincerely look forward to establishing a long-term, stable cooperative partnership with you.
