EVS EVS1U-48300PDU 48V DC Power Supply Distribution Unit 300A 19-inch 1U Rack Mount Industrial Telecom Equipment

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EVS EVS1U-48300PDU 48V DC Power Supply Distribution Unit 300A 19-inch 1U Rack Mount Industrial Telecom Equipment

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Product Description

1. Introduction

DC Power Distribution Unit is suitable to indoor low voltage DC power contribution system. Mounted in a rack cabinet and connected between the -48V DC power supply and the protected equipment, it can protect the equipment from surge and instantaneous over voltage caused by the outside environment (lightning, electromagnetic radiation interference, etc.) or by the internal subsystems (switching effect, start and stop operation of inductive and capacitive loads), it is a Class C drawer type surge protector for DC power distribution with the following features:

19 inch 1U rack installation;
Output 12 outputs 48V 30A;
Circuit breaker for each of the 12 outputs, can disconnect the circuit when fault or overload happens;
Easy connection for inputs and outputs wiring;
Insulation of output connectors;
Large current discharge capability and low residual voltage;
Remote signal alarm connectors (dry contacts of remote signal alarm is closed at normal operation while open at fault condition).

2. Power System Configuration

Parameter	Specification Details
Nominal load current IR	Inputs: Two inputs in parallel, maximum 150A for each input and 300A for two inputs in parallel, maximum 30A for 1-12 outputs
Rated current of circuit breaker	30A
Remote alarming connectors	Dry contacts 1 and 3 are closed at normal operation while open at fault
Wiring	Input: Pressed frame crimp connectors Output: Pressed frame crimp connectors
Side handling	Fixed type

2.1 Operating environment

Operating temperature: -40°C ~ +70°C;
Relative humidity: 5% - 95%;
Atmosphere pressure: 70kPa ~ 106kPa

2.2 Storage environment

Storage temperature: -40°C ~ +85°C;
Relative humidity: 5% - 95%;
Atmosphere pressure: 70kPa ~ 106kPa;
Storage time limit: 12 months

2.3 Reference standards

GB4943.2001 / IEC60950:1999: Safety of information technology equipment
GB/T18802.21-2004 / IEC61643-21:2000: Low voltage surge protective device, part 21, SPD for telecommunication and signal networks-performance requirements and tests.
YD/T1542-2006: Technical requirements and test methods of SPDs for signal networks

DC Power Supply Distribution Unit Front Panel

Frequently Asked Questions (FAQ)

What are the primary applications of this DC Power Distribution Unit?

This PDU is ideal for indoor low-voltage DC power distribution systems. It is connected between a -48V DC power supply and critical equipment, protecting it from external surges (like lightning and electromagnetic interference) and internal switching surges.

What is the mounting size of the unit?

The PDU is designed to standard 19-inch rack mounting configurations with a compact 1U height profile, making it easy to fit into standard industrial and telecom rack cabinets.

How does the circuit breaker function in case of overload?

Each of the 12 outputs features an independent 30A circuit breaker. If a fault or overload condition occurs on any output line, the corresponding breaker trips immediately to isolate the issue and protect the system.

What are the temperature tolerances of this telecom device?

The device features industrial-grade environmental resilience, operating reliably in temperatures ranging from -40°C to +70°C, and can be safely stored in temperatures from -40°C to +85°C.

How does the remote alarm notification system work?

The device is equipped with dry contact remote signal alarm connectors. The contacts 1 and 3 remain closed during normal operation and will open automatically to signal a fault condition.

Which safety and performance standards does the unit comply with?

It meets multiple safety and regulatory standards, including GB4943.2001/IEC60950 for information technology safety, GB/T18802.21-2004/IEC61643-21 for low-voltage SPDs, and YD/T1542-2006 for telecommunication networks.

Product Detail

EVS EVS1U-48300PDU 48V DC Power Supply Distribution Unit 300A 19-inch 1U Rack Mount Industrial Telecom Equipment

Product Description

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Product Detail

EVS EVS1U-48300PDU 48V DC Power Supply Distribution Unit 300A 19-inch 1U Rack Mount Industrial Telecom Equipment

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