Product Overview
The Vertiv (formerly Emerson) R48‑3500e3 is a high‑power, ultra‑high efficiency eSure series rectifier module designed for mission‑critical telecom and data center power systems. It converts wide‑range AC input into stable adjustable –48V DC output, delivering rated power 3500W and max output current 73A. It is widely used in 4G/5G base stations, OLT equipment, edge data centers, microwave transmission and compact embedded power systems.
Adopting advanced DSP digital control and high‑frequency LLC resonant topology, this module achieves peak efficiency up to 96.3%, with features including hot‑swap capability, active current sharing, comprehensive protection and strong environmental adaptability. It is a core component for reliable, energy‑saving and maintenance‑free DC power supply.
Key Features
Ultra‑high peak efficiency up to 96.3%, low power consumption and heat generation
Wide AC input range 85–305VAC, 45–65Hz, compatible with global unstable power grids
Stable adjustable DC output –42V ~ –58VDC, max current 73A, rated power 3500W
Power factor >0.99, THD ≤5%, green and grid‑friendly design
Hot‑swappable design, online replacement without system shutdown
Automatic digital current sharing, current imbalance ≤±3%, supports parallel expansion
Tri‑color LED indicators (green/yellow/red) for real‑time status monitoring
CAN bus communication, reports voltage, current, temperature and fault alarms
Wide operating temperature –40°C ~ +75°C, strong high‑temperature resistance
Full protection: OVP, OCP, SCP, OTP, input undervoltage
Ultra‑compact size, light weight, easy for rack integration
Certified with CE, UL, ETSI, RoHS and global telecom standards
Technical Specifications
| Item | Details |
| Brand | Vertiv / Emerson |
| Model | R48‑3500e3 |
| Type | eSure high‑efficiency telecom rectifier module |
| AC Input | 85–305VAC, 45–65Hz; Max 22A |
| DC Output | Nominal –48VDC; Adjustable –42V ~ –58VDC |
| Rated Output Power | 3500W |
| Max Output Current | 73A |
| Peak Efficiency | 96.3% |
| Power Factor | >0.99 (50%–100% load) |
| Current Sharing Accuracy | ≤±3% |
| Control Interface | CAN bus |
| Indicators | Green=Normal; Yellow=Alarm; Red=Fault |
| Protection Functions | OVP, OCP, SCP, OTP, Input Undervoltage |
| Dimensions (H×W×D) | 41 × 84.5 × 330 mm |
| Weight | Approx. 1.7 kg |
| Operating Temp | –40°C ~ +75°C |
| Certifications | CE, UL, ETSI, RoHS |
| Warranty | 12 Months |
| Application | Telecom, Base Station, OLT, Data Center |
Applications
4G / 5G mobile base stations and wireless access sites
Telecom OLT and fiber optical access network equipment
Edge data centers and IDC equipment rooms
Microwave transmission and fixed communication systems
Industrial control, automation and critical DC power loads
Compact embedded power systems and communication cabinets
Outdoor communication cabinets and harsh environment scenarios
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 and brands.
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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, equipment maintenance training 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 global 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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