Product Overview
The Vertiv R48-3500E (Former Emerson eSure series) is high-density high-efficiency AC-DC rectifier module independently developed by Vertiv, specially customized for global 4G/5G base station, FTTx OLT and small edge data center embedded power cabinets. With rated 3500W output power, it converts wide-range single-phase AC into adjustable 42~58VDC standard communication voltage, perfectly plug-and-play with all Vertiv NetSure series power shelves without any cabinet modification. Adopts advanced SiC chip + DSP full digital control technology, peak conversion efficiency up to 96.5%, ultra-high power factor ≥0.99, multi-module free parallel to expand system capacity, widely used in indoor/outdoor 5G small cell, pole-mounted OLT cabinet and telecom station power upgrade projects。
Key Features
Ultra-wide AC input range:85~300VAC(45~65Hz), well adapt unstable municipal grid and diesel generator power supply
Adjustable DC output:42~58VDC(default53.5VDC), max 73A rated current, constant power output design
Peak conversion efficiency ≥96.5%, PF≥0.99, ultra-low input harmonic THDi＜3%, reduce grid loss and operation cost
Standard hot-swap plug-in structure, front pull-out handle design, replace module without system power off
Built-in intelligent soft-start circuit, no surge current during plug-in to protect cabinet busbar and front-end equipment
Multi-layer full protection:OVP/UVP/OCP/SCP/OTP + input lightning surge protection for harsh outdoor cabinet environment
Intelligent variable speed fan cooling, auto adjust fan speed by internal temperature to cut idle noise and extend service life
CAN bus communication interface, realize real-time data interaction with cabinet monitoring unit for remote fault alarm and parameter setup
Technical Specifications
| Item | Details |
| Model | R48-3500E (eSure Series) |
| Brand | Vertiv / Former Emerson |
| AC Input | 85~300VAC, 45~65Hz Single Phase |
| Rated DC Output | 42~58VDC(Default53.5VDC), Max73A |
| Rated Power | 3500W |
| Peak Efficiency | ≥96.5% |
| Power Factor | ≥0.99 |
| Cooling | Intelligent Thermostatic Forced Air Cooling |
| Communication | CAN Bus for System Monitor |
| Dimension | 41×84.5×340mm |
| Net Weight | ≈1.7kg |
| Working Temp | -40℃ ~ +70℃(Derate above 55℃) |
| Storage Temp | -40℃ ~ +75℃ |
| MOQ | 1 PCS |
| Unit Price | $145/PCS |
| Monthly Supply | ≥1200PCS |
| Packing | Export Carton |
| Delivery Time | 1~2 Weeks |
| Warranty | 12 Months |
Applications
Indoor & Outdoor 5G Macro/Micro Small Cell Base Station DC Power Supply
FTTx OLT & DSLAM Fiber Access Cabinet Embedded Rectifier Module
Pole-mounted Outdoor Unmanned Communication Cabinet Backup Power
Edge Mini Data Center & Server Room Auxiliary DC Power System
Old Telecom Station Power Cabinet Capacity Expansion & Renovation
Off-grid Solar Hybrid Telecom Site PV Matching Rectifier Equipment
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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