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CRPSLD550B

CRPS

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CRPSLD550B

Greatwall / Server Power Supply / CRPS

CRPSLD550B combines 550W capacity and a stable +12V / 45A rail for Telecom & 5G Infrastructure, Network & Communication Equipment, Industrial Control Systems, and DC Power Systems & Renewable Energy, creating controlled delivery for equipment expected to run for long periods.

Model
CRPSLD550B
Input Voltage
−40VDC to −72VDC
Standby Output
+12VSB / 3A
Output Power
550W
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PRODUCT OVERVIEW

Built for reliable, continuous power delivery.

The CRPSLD550B is designed for systems using −48V DC-style power architecture instead of standard AC input. It is suitable for telecom cabinets, network infrastructure, edge access systems, battery-backed DC nodes, and compact server platforms where DC input compatibility, stable 12V output, airflow flexibility, and compact CRPS integration are important.

Plan the CRPSLD550B output wiring around the actual current demand: keep conductors short, use low-resistance terminations, separate power paths from sensitive signal wiring, and preserve access for retightening and inspection. Arrange the enclosure so heat from neighboring components cannot collect around the supply or its connection points.

Qualify the CRPSLD550B at several load levels, measuring voltage at both the supply terminals and the equipment input rather than relying only on no-load readings. Record cable drop, connector temperature, and enclosure temperature as baseline values. Later maintenance checks can compare against this record to identify loose joints, rising contact resistance, or deteriorating heat dissipation before they interrupt service.

CORE ADVANTAGES

550W Platinum CRPS Power Supply for −48V DC Telecom, Network, and Edge Infrastructure Platforms

The CRPSLD550B delivers 550W output for −48V DC server platforms, telecom cabinets, network access systems, edge infrastructure, and compact equipment that require stable 12V power delivery.

01

550W DC-Input CRPS Power Capacity

The CRPSLD550B delivers 550W output for −48V DC server platforms, telecom cabinets, network access systems, edge infrastructure, and compact equipment that require stable 12V power delivery.

02

Compact 185 × 73.5 × 40 mm CRPS Structure

Built in a compact 185 × 73.5 × 40 mm CRPS form factor, this model supports space-saving chassis integration for cabinet-mounted systems, communication equipment, and distributed infrastructure nodes.

03

−40VDC to −72VDC Input Range

It supports −40VDC to −72VDC input , making it suitable for telecom-style −48V DC power environments, battery-backed systems, and DC distribution cabinets.

04

Stable 12V Main Output Performance

The unit provides +12V / 45A main output, together with +12VSB / 3A standby output for system control, standby operation, and auxiliary management functions.

05

Platinum Efficiency for Compact DC Systems

With Platinum efficiency , the CRPSLD550B helps reduce conversion loss, improve power utilization, and support stable thermal behavior in continuous infrastructure environments.

06

Flexible Airflow for Different Cabinet Layouts

With FR or RF airflow direction , 0°C to 60°C operating temperature , and Class B MEI , this model supports practical deployment in different telecom, network, edge, and compact server cabinet designs.

MODEL SELECTION

Compare Greatwall power options.

Review nearby Greatwall models and select the power level, output architecture, and form factor that best match the target system.

Model Power Input Voltage Efficiency Form Factor Best-Fit Application
CRPSLD550B 550W −40VDC to −72VDC Platinum CRPS Compact −48V DC telecom cabinets, edge access nodes, and low-power network infrastructure
CRPSD800D2 800W −40VDC to −72VDC Platinum CRPS Mid-range DC-powered network systems, access equipment, and distributed infrastructure cabinets
CRPSD1300 1300W −40VDC to −72VDC Platinum CRPS Higher-load −48V DC server platforms, telecom racks, and edge computing systems
CRPSLD2000D2 2000W −40VDC to −72VDC Platinum CRPS High-capacity DC infrastructure, dense telecom systems, and demanding −48V server power platforms

DEPLOYMENT SCENARIOS

Where CRPSLD550B fits best.

The CRPSLD550B is designed for systems using −48V DC-style power architecture instead of standard AC input. It is suitable for telecom cabinets, network infrastructure, edge access systems, battery-backed DC nodes, and compact server platforms where DC input compatibility, stable 12V output, airflow flexibility, and compact CRPS integration are important.

Scenario System Requirement Why CRPSLD550B Fits
−48V Telecom Power Cabinets Stable 12V output from telecom DC power systems −40VDC to −72VDC input supports common −48V DC cabinet environments
DC Network Infrastructure Reliable power for switches, routers, access devices, and control modules 550W output provides practical power for compact communication platforms
Edge Access Systems Compact power module for distributed edge or access equipment 185 × 73.5 × 40 mm CRPS size supports space-limited cabinet integration
Battery-Backed Server Nodes DC input support for systems connected to battery or backup power architecture −40VDC to −72VDC range improves compatibility with DC backup designs
Compact Storage Appliances Stable 12V power for controllers, drives, and small storage systems +12V / 45A output supports moderate storage and controller workloads
Industrial Communication Equipment Power support for monitoring, gateway, and communication control systems FR or RF airflow options help match different enclosure cooling directions

POWER DESIGN

Reliability notes for continuous operation.

The CRPSLD550B is built for compact DC-powered systems that require stable 12V output from a −40VDC to −72VDC input source. Compared with AC-input CRPS models, this unit is better aligned with telecom power cabinets, battery-backed infrastructure, and DC distribution environments where −48V-style input is commonly used.

  • 550W output capacity supports compact telecom systems, edge access equipment, network devices, and low-power infrastructure nodes.
  • −40VDC to −72VDC input supports −48V DC power environments commonly used in telecom and communication infrastructure.
  • +12V / 45A main output provides stable 12V power for boards, controllers, fans, and connected system components.
  • +12VSB / 3A standby output supports standby control, auxiliary circuits, and system management functions.
  • Platinum efficiency helps reduce conversion loss and supports better energy utilization in continuous operation.
  • FR or RF airflow options allow the PSU to match different cabinet cooling layouts and installation directions.
  • 0°C to 60°C operating temperature supports a wider working range for distributed infrastructure environments.
  • Compact CRPS form factor enables space-saving installation in compatible telecom, edge, and cabinet-based systems.

INSTALLATION

Installation and operating guidance.

Confirm electrical compatibility, thermal clearance, mechanical fit, and system load before integration.

Installation / Operation Item Guidance
DC Input Matching Confirm the target system uses −40VDC to −72VDC input before installation
Chassis Fitment Verify that the PSU bay supports the 185 × 73.5 × 40 mm CRPS form factor
Load Planning Keep long-term load within a suitable range to support stable output, efficiency, and service life
Output Matching Confirm that the platform supports +12V main output and +12VSB standby requirements
Airflow Selection Select FR or RF airflow according to the cabinet cooling direction and system thermal design
Thermal Clearance Keep intake and exhaust areas open to avoid heat buildup around the PSU bay
Module Installation Ensure the power module is fully seated and correctly connected before powering on the system
Routine Maintenance Check fan condition, dust buildup, connector status, and system thermal behavior during regular service

FAQ

Frequently asked questions about CRPSLD550B.

Key answers for specification matching, installation planning, and system integration.

What type of power supply is the CRPSLD550B?

The CRPSLD550B is a 550W Platinum CRPS power supply designed for −48V DC telecom cabinets, network infrastructure, edge access systems, and compact DC-powered equipment.

What is the size of this model?

It uses a compact CRPS structure with dimensions of 185 × 73.5 × 40 mm.

What input voltage range does it support?

The CRPSLD550B supports −40VDC to −72VDC input, making it suitable for −48V DC power environments.

What output does the CRPSLD550B provide?

It provides +12V / 45A main output, together with +12VSB / 3A standby output.

What is the main advantage of the CRPSLD550B?

Its main advantage is the combination of compact 550W CRPS power delivery and compatibility with −40VDC to −72VDC telecom-style DC input systems.

Is this model suitable for telecom cabinets and DC network equipment?

Yes. Its −48V DC input range, compact size, and flexible airflow options make it suitable for telecom cabinets, network access systems, and distributed infrastructure equipment.

Does the CRPSLD550B support different airflow directions?

Yes. The CRPSLD550B supports FR or RF airflow, allowing it to match different chassis and cabinet cooling layouts.

What should be checked before integrating this PSU into a system?

Before integration, confirm the DC input range, CRPS mechanical fit, output requirement, airflow direction, connector compatibility, and system-level thermal design.

KEEP EXPLORING

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