M45D65B 2U DC Telecom Power System Compact 30A 60A 90A -48V Rack Power Solution for Telecom Networks

Product Introduction

The M45D65B is a compact 2U DC telecom power system designed for reliable -48V DC power supply in telecom and communication applications. Built in a standard 19-inch rack-mount structure, it supports flexible capacity expansion from 1.74kW to 5.22kW, making it suitable for transmission equipment, access devices, switches, and enterprise communication networks. Its compact design helps save installation space while offering stable output, convenient maintenance, and intelligent monitoring functions.

Key Features

Compact 2U Rack Design

The system adopts a 2U compact sub-rack structure with standard 19-inch width, making it easy to integrate into telecom racks or cabinets where space efficiency is important.

Flexible Capacity Expansion

M45D65B supports up to three 1740W rectifier modules, providing a total output capacity of up to 5.22kW. This modular configuration allows users to match power capacity with actual site requirements.

Wide Input Voltage Range

Each rectifier module supports 85VAC to 290VAC input, giving the system strong adaptability to unstable grid conditions and improving power reliability in different deployment environments.

Easy Front Maintenance

The unit uses rear cable entry and rear wiring, while maintenance is carried out from the front side. Rectifier modules and the controller are hot pluggable, allowing quick online replacement and reducing downtime.

Intelligent Monitoring and Battery Management

The system supports RS485, SNMP, LCD display, dry contact alarms, battery temperature input, and ambient temperature input. It is designed for flexible networking, remote supervision, and improved battery life management.

Application Scenarios

The M45D65B is suitable for a range of communication power applications, including:

Wireless base stations

Transmission networks

Enterprise communication networks

Access devices and switching systems

Integrated telecom equipment cabinets

Technical Highlights

Why Choose M45D65B

The M45D65B combines compact size, modular expansion, stable -48V DC output, and remote monitoring capability in one integrated power platform. It is a practical solution for telecom sites that require reliable DC power, easy installation, and convenient online maintenance. With its wide AC input adaptability, hot-swappable design, and intelligent controller, the system helps improve uptime while reducing maintenance complexity.

Introduction 

ESTEL(GUANGDONG)TECHNOLOGY CO., LTD, located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and technology innovative company, we engage in the R&D, manufacture, and sales of telecommunication equipment. Estel has a well-established team of technical and management experts who can meet customers’ specific needs accurately.

The base station integrated solutions and products include outdoor integrated telecom equipment cabinet, battery cabinet, RRU cabinet, power supply cabinet, environment monitoring system, TEC peltier air conditioner, AC220V compressor air conditioner, DC48V variable frequency air conditioner, heat exchanger, rectifier, UPS, embedded telecom power system etc. All the above solutions and products can be custom made.

Our products and solutions have been deployed all over China. Our main domestic customers are China Telecom, China Mobile, China Unicom, State Grid, Shenzhen / Beijing Metro and Huawei / ZTE etc. In addition, our products have been exported to Europe, North America, South America, Central America, Southeast Asia, Africa, Australia, Mid East countries, etc.

“ Customers First, Quality First ” is always our principle. We have attained many certifications, such as ISO9001, ISO14001, OHSAS18001, CE, UL, FCC etc. AS a telecom integrated solutions / energy saving system integrator in China, We have strong advantages in technology competitiveness, management competitiveness ,service competitiveness and price competitiveness. Through many years of experiences in design, production and implementation of different projects around the world, we have gained great reputation. Relying on professional technique and strict quality control, we will continuously offer high cost-effective products and solutions to our respectable customers globally. We will always try our best to meet customers’ need and requirement.

Company Capability

Trade & Market