Product Overview
The ETP48400‑C7A3 is a high‑efficiency, compact embedded DC power system designed for telecom access networks, transmission equipment, 5G base stations, OLT devices and compact communication equipment rooms. It converts wide‑range AC input into stable adjustable –48V DC output with rated power 4000W, delivering reliable power for critical communication equipment in a standard 19‑inch 3U chassis.
Adopting a fully modular, hot‑swappable design, intelligent monitoring and comprehensive protection, this system ensures high efficiency, stable operation and easy maintenance. It is the ideal compact power solution for modern communication infrastructure requiring high reliability and space savings.
Key Features
Standard 19‑inch 3U rack/embedded design, compact structure and high space utilization
4000W high‑efficiency output, efficiency up to 96%, low energy consumption and heat generation
Wide AC input range 85–300VAC, 45–65Hz, strong adaptability to unstable grids and generator power
Stable adjustable DC output 42–58VDC (default 53.5VDC), matching various telecom equipment
Supports hot‑swappable rectifier modules, plug‑and‑play replacement without system shutdown
Full front maintenance & wiring, easy installation and later maintenance
Intelligent monitoring: real‑time data display, fault alarm, remote communication (RS485/FE/SNMP)
Intelligent battery management & protection, effectively extending battery service life
Wide operating temperature –40°C ~ +65°C, suitable for high‑altitude & harsh environments
Complete protection: OVP, OCP, SCP, OTP, LVBD, surge & lightning protection
High power factor ≥0.99, low THD, green and grid‑friendly
Protection class IP20, compliant with CE, RoHS and global telecom safety standards
Technical Specifications
| Item | Details |
| Model | ETP48400‑C7A3 |
| System Type | 19‑inch 3U embedded DC power system |
| AC Input | 85–300VAC, 45–65Hz; 3‑phase / 1‑phase compatible |
| DC Output | 42–58VDC adjustable; Default 53.5VDC |
| Rated Output Power | 4000W |
| Matching Rectifiers | R4875G1 |
| Peak Efficiency | Up to 96% |
| Power Factor | ≥0.99 |
| Cooling | Intelligent fan cooling |
| Maintenance | Full front maintenance & front wiring |
| Protection Level | IP20 |
| Dimensions (W×D×H) | 482.6 × 600 × 133 mm |
| Weight | Approx. 20 kg (without rectifiers) |
| Operating Temp | –40°C ~ +65°C |
| Storage Temp | –40°C ~ +70°C |
| Humidity | 5%–95% RH (non‑condensing) |
| Altitude | Up to 4000 m |
| Certifications | CE, RoHS, UL |
| Warranty | 12 Months |
| Application | Telecom access, transmission, 5G base station, OLT |
Applications
Telecom access network & optical access equipment (OLT/ONU)
Transmission network & microwave communication systems
5G / 4G base stations and wireless access sites
Compact equipment rooms & cabinet‑embedded scenarios
Industrial control & critical communication DC power loads
Edge data centers & outdoor integrated communication cabinets
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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