Product Overview
The Vertiv R48-2000A3 (Former Emerson eSure Standard Series) is cost-effective digital hot-swap rectifier, designed to match all Vertiv NetSure embedded telecom power systems. Rated max 37A/2000W@48VDC, it converts wide-range single-phase 85~300VAC mains into adjustable 42~58VDC standard telecom voltage(default53.5VDC). Adopts mature switching power & active PFC technology, full-load PF≥0.99 and nominal efficiency ≥94%. Standard drawer hot-plug structure enables online replacement without shutting down cabinet power; built-in CAN bus links with shelf controller for remote parameter setup and fault reporting. Cost-efficient choice for regular indoor 4G/5G small cell, FTTx OLT and old telecom cabinet spare replacement projects globally。
Key Features
Ultra-wide AC input:85~300VAC(45~65Hz, nominal200~250VAC), fit global unstable grid and diesel generator supply
Adjustable DC output:42~58VDC(default53.5V), max37A constant power output, precise voltage regulation
Active PFC design, full-load PF≥0.99, low input harmonic, peak efficiency ≥94% to control running electricity cost
Full hot-swap plug-and-play construction, front pull-out design for rapid field maintenance without system power-off
Intelligent thermostatic fan cooling, auto speed adjustment by inner temperature for low noise and long service life
Complete multi-layer protection:OVP/UVP/OCP/SCP/OTP plus input lightning surge protection
CAN bus communication, realize real-time data sync with cabinet monitoring unit for remote management
Wide operating range:-40℃~+65℃(derate above 45℃), stable below 4000m altitude, CE compliant certification
Technical Specifications
| Item | Details |
| Model | R48-2000A3 |
| Brand | Vertiv / Former Emerson |
| AC Input | 85~300VAC,45~65Hz,Nominal200~250VAC,Max13A |
| DC Output | Adjustable42~58VDC(Nom53.5V),Max37A/2000W |
| Rated Efficiency | ≥94% |
| Full Load PF | ≥0.99 |
| Dimension | 320×100×150mm |
| Net Weight | 4kg |
| Cooling | Intelligent Variable Speed Forced Air Cooling |
| Communication | CAN Bus |
| Working Temp | -40℃ ~ +65℃(Derate＞45℃) |
| Storage Temp | -40℃ ~ +70℃ |
| Max Full-power Altitude | ≤4000m |
| Certifications | CE,GR-1089 |
| MOQ | 1 PCS |
| Unit Price | $198/PCS(1~9pcs) |
| Weekly Supply | 100PCS |
| Packing | Export Standard Carton |
| Warranty | 12 Months |
Applications
Indoor & Outdoor 4G/5G Micro Small Cell DC Backup Power
FTTx OLT & DSLAM Cabinet Embedded Rectifier Replacement
Pole-mounted Unmanned Outdoor Communication Cabinet Power Upgrade
Old NetSure Power Cabinet Capacity Expansion Project
Mini Edge Data Room Auxiliary DC Power Source
Conventional Telecom Station Power Renovation
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 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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