1U Compact Rectifier Power Telecom DC48V Power Distribution System for Critical Infrastructure

Product Overview of 1U Compact Telecom DC48V Power Distribution System

ESTEL's ET4860-M3H21 is a 1U-high, 19-inch sub-rack power system engineered for bandwidth-critical applications like fiber optics, microwave backhaul, and access switching. Unlike conventional rectifier shelves, this unit accepts direct high-voltage photovoltaic input up to 63A/2P, eliminating the need for separate solar converters. Front-access terminals for both AC input and DC output allow installation against a wall or back-to-back with other equipment.

Despite its slim 1U profile, the system delivers 6kW at -53.5VDC using two hot-swappable 3kW rectifier modules in N+1 configuration. A single 100A/1PN breaker handles battery connection, while four 63A/1PN BLVD circuits feed critical loads directly — no LLVD shedding, no compromise. The system operates from 45Hz to 66Hz, ready for either 50Hz or 60Hz grids.

Controller of 1U Compact Telecom DC48V Power Distribution System

At the heart of this system is the MC2600 controller. Built around an ARM Cortex-M4 processor, the MC2600 brings enterprise-grade hybrid power management to compact form factors. It handles diesel generators, VRLA, lithium batteries, and solar modules from a single interface. Key capabilities include programmable battery testing (scheduled, constant-current, or short-duration), one-click configuration upload for rapid site deployment, and an energy-saving standby mode that cuts rectifier idle losses. The controller scales from 1 to 40 rectifiers, making it equally suited for standalone cabinets and centralized power plants.

Key Features of 1U Compact Telecom DC48V Power Distribution System

High-voltage PV direct input – 63A/2P breaker accepts solar feed without external conversion

1U, 6kW density – Fits where traditional 2U or 3U systems cannot

Front-access everything – Terminals on the front panel; zero rear clearance required

BLVD-only design – Four 63A circuits, no automatic shedding, every load stays critical

Single battery breaker – 100A/1PN, clean and simple for single-string backup

Rectifier Module of 1U Compact Telecom DC48V Power Distribution System

System of 1U Compact Telecom DC48V Power Distribution System

• Dimension: 482.0(W) × 350.0(D) × 1U(H)

• Weight: ≤10kg (without rectifiers)

• Cooling mode: Natural cooling

• Installation mode: Installed on 19-inch rack or inside the cabinet

• Cabling mode: Top inlet and top outlet

• Maintenance mode: Front maintenance, support module grade change

• Protection level: IP20

Input of 1U Compact Telecom DC48V Power Distribution System

• Input mode: High-voltage photovoltaic 63A/2P

• Input frequency: 45–66Hz, rated value: 50Hz/60Hz

DC Distribution of 1U Compact Telecom DC48V Power Distribution System

• Output voltage: –43 ~ –58VDC, rated value: –53.5VDC

• Maximum capacity:6kW(2*3kw, N+1 redundancy)

• Battery breakers: 1*100A/1PN

• Load breakers: BLVD: 4*63A/1PN

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.

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