Product Overview
The Vertiv (formerly Emerson) R48‑4300E3 / R48‑4300E3A is a high‑efficiency, high‑power density DC rectifier module designed for mission‑critical telecom and data center power systems. It converts wide‑range AC input into stable -48V DC output, supporting battery charging and load power supply for 4G/5G base stations, OLT equipment, edge data centers, microwave transmission and industrial control scenarios.
Adopting advanced DSP control and high‑frequency switching technology, this module delivers up to 4320W output power with peak efficiency up to 96.5%. It features hot‑swap capability, intelligent monitoring, complete protection functions and wide environmental adaptability, making it a reliable core component for modular DC power systems.
Key Features
Ultra‑high efficiency up to 96.5%, low power consumption and heat generation, effectively reducing OPEX
Wide AC input range 85–300VAC, 45–65Hz, compatible with global unstable power grids
Stable -48V DC output, adjustable from -42V to -58V via system controller, max current 81.5A
Full 4320W output up to 45°C ambient temperature, strong high‑temperature resistance
Online hot‑swappable design, supports plug‑and‑play replacement without system shutdown
Multi‑protection including overvoltage, overcurrent, short circuit, overheating and high voltage shutdown
LED status indicators (green / yellow / red) for real‑time operation and fault visualization
CAN bus communication, reports voltage, current, temperature and alarms to system controller
Compact size, light weight, easy for rack integration and system capacity expansion
Compliant with EN 62368‑1, ETSI, RoHS and global safety & EMC standards
Technical Specifications
| Item | Details |
|---|
| Brand | Vertiv / Emerson |
| Model | R48‑4300E3, R48‑4300E3A |
| AC Input | 85–300VAC, 45–65Hz; Max 27A @176VAC |
| Power Factor | >0.99 (50%–100% load) |
| DC Output | Nominal -48VDC; Adjustable -42V ~ -58VDC |
| Rated Power | 4320W |
| Max Output Current | 81.5A @ -53VDC |
| Peak Efficiency | 96.5% |
| Control Interface | CAN bus (connect to system monitoring unit) |
| Indicators | Green: Normal; Yellow: Alarm; Red: Fault |
| Operating Temp | -40°C ~ +70°C (full power ≤45°C) |
| Dimensions (H×W×D) | 41.0 × 84.5 × 330 mm |
| Net Weight | Approx. 2 kg |
| Protection | OVP, OCP, SCP, OTP, HVSD, Fan Fail |
| Certifications | EN 62368‑1, ETSI EN 300 386, RoHS |
| Application | Telecom, Data Center, Industrial Control |
Applications
4G / 5G mobile base stations and wireless access sites
OLT & 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
Outdoor cabinets, compact power systems and marine communication power
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.
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.
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.
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.
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.
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.
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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