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
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Item
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Specification
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Product Type
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1.74–5.22kW 2U DC Telecom Power System
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System Capacity
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1.74kW to 5.22kW
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Rectifier Module
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1740W per module
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Maximum Configuration
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3 rectifier modules
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Input Voltage
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220VAC single phase
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Rectifier Input Range
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85VAC–290VAC
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Output Voltage
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-43VDC to -58VDC
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Rated Output Voltage
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-53.5VDC
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Installation
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19-inch rack or cabinet integration
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Cooling
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Natural cooling for system / forced cooling for rectifier
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Communication
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RS485, SNMP
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Display
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LCD
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Protection Level
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IP20
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Operating Temperature
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-40°C to +75°C
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Humidity
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5%–95% non-condensing
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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.
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