DPS-550LB-1B Dell 550Watt Reverse Airflow Power Supply

Dell DPS-550LB-1B 550W Reverse Airflow AC Power Supply Overview

The Dell DPS-550LB-1B 550W Reverse Airflow AC Power Supply is a high-performance, enterprise-grade module designed specifically for Dell S4100 and S4048T switches. With a rated output of 550 watts and advanced reverse airflow design, this power supply ensures efficient thermal management, reliable power delivery, and seamless integration into high-density data center environments. Engineered for mission-critical networking infrastructure, the DPS-550LB-1B provides both operational stability and energy efficiency for demanding workloads.

Technical Specifications

550 Watt Output Capacity

Providing 550W of continuous power, the DPS-550LB-1B is optimized for powering Dell S-series switches while supporting connected devices and networking modules. Its output capacity ensures stable operation under maximum load conditions, making it suitable for high-performance networking environments.

AC Input Range and Frequency

The power supply operates within an AC input voltage range of 100-240V and supports 50-60Hz frequency, offering global compatibility and flexibility. This wide input range ensures reliable operation in diverse geographic regions and fluctuating power conditions.

Reverse Airflow Design

The reverse airflow architecture is specifically engineered to maintain optimal thermal conditions within Dell S4100 and S4048T switches. By directing airflow in a reversed direction, the module efficiently dissipates heat from internal components, maintaining system stability and prolonging equipment life.

High Efficiency and Energy Savings

The DPS-550LB-1B is designed to meet enterprise energy efficiency standards. With efficiency ratings comparable to 80 Plus Gold and above, this power supply reduces electricity costs and heat output, contributing to environmentally friendly and cost-effective data center operations.

Hot-Plug Capability

The module supports hot-swappable operation, enabling IT administrators to replace or upgrade the power supply without powering down the switch. This feature ensures zero downtime in critical network deployments and simplifies maintenance.

Design and Form Factor

Compact and Switch-Optimized Design

Designed specifically for the Dell S4100 and S4048T series, the DPS-550LB-1B fits seamlessly into the switch chassis. Its compact form factor allows high-density rack deployment without compromising airflow or accessibility.

Advanced Thermal Management

Integrated fans and intelligent thermal sensors regulate airflow, adjusting fan speed dynamically based on power draw and temperature. This results in quieter operation, reduced energy consumption, and stable thermal conditions for high-density networking setups.

Robust Construction

Enterprise-grade components, including high-quality capacitors, transformers, and ICs, ensure long-term reliability. These durable materials support continuous operation in demanding environments and protect against electrical surges and fluctuations.

Performance and Reliability

Stable Power Delivery

The DPS-550LB-1B provides consistent voltage output with minimal ripple and noise, ensuring stable operation of Dell switches and connected networking modules. Stable power delivery is critical for minimizing packet loss, switch errors, and system downtime.

Redundancy Support

This power supply supports redundant configurations, allowing multiple DPS-550LB-1B units to operate in parallel. Redundancy ensures uninterrupted network operation in the event of a single PSU failure, enhancing overall system resilience.

Protection Mechanisms

The module includes overvoltage protection (OVP), overcurrent protection (OCP), short-circuit protection (SCP), and thermal shutdown features. These safeguards protect both the PSU and the switch from potential damage due to electrical anomalies or environmental factors.

Energy Efficiency and Sustainability

High Efficiency Ratings

With energy efficiency approaching the 80 Plus Gold standard, the DPS-550LB-1B reduces operational electricity costs while minimizing heat output. This makes it ideal for large-scale data center deployments that require optimized power usage and cooling efficiency.

Reduced Heat Generation

By minimizing heat production, the power supply reduces reliance on cooling infrastructure, lowering operational costs and enhancing equipment longevity. The reverse airflow design further improves thermal distribution within the switch chassis.

Environmentally Compliant Design

Delta and Dell comply with global environmental regulations, including RoHS and WEEE, ensuring the DPS-550LB-1B is produced with eco-friendly materials and processes. This supports data center sustainability initiatives and regulatory compliance.

Applications and Use Cases

Enterprise Network Switch Deployment

Designed for Dell S4100 and S4048T switches, the DPS-550LB-1B delivers reliable power in enterprise network environments. Its hot-swap capability ensures zero downtime during maintenance, making it ideal for mission-critical operations.

Data Center Integration

The power supply’s efficiency and reverse airflow design make it suitable for high-density data center deployments. By reducing energy consumption and improving cooling efficiency, it contributes to lower TCO (Total Cost of Ownership) in large-scale networking setups.

Telecommunications Infrastructure

The DPS-550LB-1B supports telecom-grade equipment by providing stable and reliable power. Redundant configurations prevent service interruptions, ensuring high availability for critical communication networks.

Industrial and Mission-Critical Networks

Industrial networking applications, including factory automation and surveillance systems, benefit from the robust protections and consistent power delivery offered by this module. Its durability ensures continuous operation under demanding environmental conditions.

Compatibility Verification

Before deployment, ensure that the switch chassis supports 550W reverse airflow power modules. Compatibility checks are crucial to guarantee correct power delivery, thermal management, and hot-swap functionality.

Reliability and Redundancy Features

Dual-PSU Redundancy

Deploying two or more DPS-550LB-1B modules in redundant configuration ensures uninterrupted operation. If one power supply fails, the redundant unit immediately provides full power to the switch, preventing downtime.

Protective Features

Overcurrent, overvoltage, short-circuit, and thermal protection mechanisms safeguard both the module and the switch. These features prevent catastrophic failures and ensure a stable networking environment.

Hot-Plug Accessibility

Hot-plug design allows safe replacement or addition of modules without shutting down the switch, which is critical for high-availability networking setups and mission-critical operations.

Future-Proofing and Scalability

Scalable Switch Deployment

Multiple DPS-550LB-1B modules can be deployed across high-density switch deployments. Their scalable design allows for flexible expansion and redundancy in growing enterprise networks.

Energy Efficiency for Evolving Data Centers

High efficiency and reverse airflow design reduce power consumption and cooling requirements, making the module suitable for modern, sustainable, and cost-effective data center environments.

Mission-Critical Reliability

With integrated protections, hot-plug support, and redundant capability, the DPS-550LB-1B ensures high availability and operational continuity, meeting the needs of mission-critical networking applications.