Product Overview
The Vertiv R48-1800A (Former Emerson eSure Series) is cost-effective digital switching rectifier developed for Vertiv NetSure PS48 series embedded telecom power cabinets. Rated nominal 1740W/30A@53.5VDC(max 1800W peak), it converts wide-range single-phase 85~305VAC alternating current into adjustable 42~58VDC standard telecom voltage(default53.5VDC). Adopts mature DSP digital control + active PFC topology, full-load PF≥0.99 and conversion efficiency above 91%. Standard drawer hot-swap construction allows online module replacement without shutting down the whole cabinet; built-in communication port links with cabinet monitor for remote parameter configuration and fault reporting, widely used for FTTx OLT, DSLAM and low-capacity 4G/5G micro base station power matching & spare replacement projects.
Key Features
Ultra-wide AC input:85~305VAC(50/60Hz, nominal200~250VAC, rated12A), adapt unstable municipal grid and diesel generator power supply
Adjustable DC output:42~58VDC(default53.5V), nominal30A/1740W, constant power design with automatic derating below 176VAC input
Active full-range PFC, full-load PF≥0.99, low input harmonic distortion, rated efficiency≥91% to cut long-term running power cost
Full front pull-out hot-swap design, realize live maintenance without system power-off, reduce field repair downtime
Intelligent thermostatic variable speed fan, auto speed adjustment based inner temperature, lower idle noise and extend component service life
Complete multi-protection circuit:OVP/UVP/OCP/SCP/OTP + AC input lightning surge protection, hardware OVP lock protection for output overvoltage
Digital communication matching NetSure monitoring unit, realize real-time data upload and remote fault alarm
Wide operating range:-40℃~+75℃, stable full-power output between -20℃~+45℃, derating above +45℃
Technical Specifications
| Item | Details |
| Model | R48-1800A |
| Brand | Vertiv / Former Emerson |
| AC Input | 85~305VAC,50/60Hz,Nominal200~250VAC,Max12A |
| DC Output | Adjustable42~58VDC(Nom53.5V),Nom30A/1740W(Peak1800W) |
| Rated Efficiency | ≥91% |
| Full Load PF | ≥0.99 |
| Dimension | 85×90×275mm |
| Net Weight | 2.4KG |
| Cooling | Intelligent Variable Speed Forced Air Cooling |
| Working Temp | -40℃ ~ +75℃(Full Power:-20~+45℃) |
| Certifications | CE |
| MOQ | 1 PCS |
| Unit Price | $217/PCS(1~9pcs) |
| Weekly Supply | 1000PCS |
| Packing | Foam+Export Standard Carton |
| Warranty | 12 Months |
Applications
PS48 Series Telecom Cabinet Matching FTTx OLT Embedded DC Power Supply
Indoor Mini 4G/5G Micro Small Cell Backup Rectifier Module
DSLAM Fiber Access Network Cabinet Spare Part Replacement
Compact Indoor Unmanned Communication Cabinet Power Upgrade
Small Edge Data Room Auxiliary Uninterrupted DC Power Source
Old NetSure PS48 Cabinet Capacity Expansion 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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