Product Overview
The Vertiv NetSure 531 A31‑S3 (Former Emerson) is 3U standard 19-inch rack embedded DC power system specially developed for FTTx OLT, indoor small 4G/5G base station and compact access equipment room. Equipped with M225S intelligent monitoring controller and max 3pcs R48‑2000e3 high-efficiency rectifier modules, the system delivers rated 48V 90A total DC output, converting wide-range AC into stable adjustable -42~-58VDC with default 53.5VDC nominal voltage. Featuring full front wiring layout, hot-swappable rectifier and intelligent energy-saving sleep function, this compact power cabinet owns excellent grid adaptability and wide ambient tolerance, becoming mainstream compact power solution for global FTTx and small-cell telecom projects.
Key Features
Standard 19-inch 3U cabinet dimension (483×310×132mm), embedded rack installation, top/side dual wiring options
Wide AC input:85~300VAC,50/60Hz, perfectly adapt unstable municipal grid and diesel generator power supply
Adjustable DC output:42~58VDC(default53.5VDC), max continuous 90A, matched with 3×R48‑2000e3 2000W high-efficiency rectifiers
Rectifier peak efficiency up to 96%, intelligent module sleep & mixed high/low efficiency plug design for power saving
Full hot-swap rectifier design, replace modules without system power-off, reduce site maintenance downtime
Built-in M225S monitoring unit: RS232/USB/Ethernet/dry contact multi communication, real-time data & fault storage
Walk-in soft start function to avoid surge impact on front-end transformer and generator equipment
Complete AC/DC dual-stage lightning surge protection + OVP/OCP/SCP/OTP full electrical protection
Wide working range:‑40℃~+65℃ full load, ‑40~+80℃ derated operation for harsh cabinet environment
CE certified, full front maintenance design for convenient field installation and troubleshooting
Technical Specifications
| Item | Details |
| Model | NetSure 531 A31‑S3 |
| Brand | Vertiv / Former Emerson |
| System Height | 3U, 19-inch Standard Rack |
| AC Input | 85~300VAC,50/60Hz Single Phase |
| DC Output | 42~58VDC(Nominal53.5VDC), Max 90A |
| Matching Rectifier | R48‑2000e3 / R48‑2000A3 (2000W/unit, max3pcs) |
| Monitoring Card | M225S |
| Rectifier Efficiency | Up to 96% |
| PF | ≥0.99 |
| Dimension | 483(W)×310(D)×132(H) mm |
| Net Weight | ≤15kg(without rectifiers) |
| Working Temp | -40℃ ~ +65℃ (Full Load) |
| Certifications | CE |
| MOQ | 1 Set |
| Unit Price | $1199/Set (1‑9pcs) |
| Monthly Supply | 1000 Sets |
| Warranty | 12 Months |
Applications
FTTx OLT & ONU Fiber Access Central Equipment Room Power
Indoor Small Cell 4G/5G Base Station Backup Power Supply
Compact Outdoor Integrated Communication Cabinet Built-in Power
Railway & Security Monitoring Small Cabinet DC Power
Industrial Control Compact Equipment Uninterrupted DC Load
Old Access Network Power System Renovation Upgrade
Why Choose Us
We are a professional manufacturer and one‑stop solution provider for communication DC power systems, boasting 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.
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Powerful R&D & Customization Ability
We have a professional technical team with years of experience in the power industry. We can provide personalized customized services covering power configuration, external interfaces, functional parameters, appearance design and logo printing, to satisfy diverse demands from telecom operators, system integrators and equipment manufacturers.
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Comprehensive OEM & OBM Services
We offer full‑cycle cooperation support from product design, prototype testing, certification to mass production. With efficient development process and strict quality management, we help you quickly launch products and build exclusive brand advantages.
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Large Production Capacity & On-time Delivery
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.
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Strict Multi-level Quality Inspection
All products will pass full-load operation test, high-low temperature aging test, safety performance test and simulated on-site operation test before delivery. We adopt high-quality original components and implement strict quality control standards to guarantee long-term stable operation of products in various harsh environments.
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Full Lifecycle Technical & After-sales Support
We establish 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 and spare parts supply, protecting the stable operation of your power system all the time.
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Rich Global Project Experience
Our products have been exported to many countries and regions, widely applied in communication, data center, industrial control, new energy and other fields. With rich project experience, we can provide targeted power solutions for different regional standards and application scenarios.
We sincerely look forward to establishing long‑term stable cooperative partnership with you.
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