Delta ESR-48/56CN Telecom Power Rectifier Module (48V 56A 3200W High-Temperature Resistant) - Isometric 45-Degree Angled View
DeltaModel: ESR-48/56CN

Delta ESR-48/56CN Telecom Power Rectifier Module (48V 56A 3200W High-Temperature Resistant)

The Delta ESR-48/56CN is a heavy-duty telecom rectifier module engineered for high-temperature and harsh outdoor cellular base stations, delivering -48V 56A (3200W) with rugged thermal management and >96% peak conversion efficiency.

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Rated DC Output Current
56A Continuous High Current
Rated Output VA / Wattage
3200W High Power Density
Peak Energy Efficiency
>96.0% Gold Level Efficiency
Nominal DC Output Voltage
-48V DC (Adjustable -42V ~ -58V)
AC Input Voltage Range
85V - 300V AC Wide Grid Tolerance
Operating Ambient Temperature
-40°C to +75°C Harsh Climate Range

What this product is

What this product is

The Delta ESR-48/56CN is a heavy-duty telecom rectifier module engineered for high-temperature and harsh outdoor cellular base stations, delivering -48V 56A (3200W) with rugged thermal management and >96% peak conversion efficiency.

What problem it solves

Resolves severe power grid instability, excessive OPEX energy dissipation, battery degradation, and cabinet thermal constraints.

Who and where it is for

5G cellular cell sites, core telecom DC plants, data center critical power infrastructure, railway signaling, and industrial UPS.

Core advantages

  • Enhanced Thermal Resilience: Optimized heat dissipation engineered for extreme desert outdoor enclosures up to +75°C.
  • 56A High-Power Output: 3200W single-unit delivery reliably powers high-drain 5G AAU radios and multi-carrier BBUs.
  • Live Hot-Swap Agility: Safe tool-free insertion/extraction under live DC bus with autonomous digital current sharing <3%.
  • Robust Grid Immunity: Integrated 4kV surge suppressors and wide-band EMI filters guard against lightning transients.

Technical specifications

Key specificationsValue
Rated DC Output Current56A Continuous High Current
Rated Output VA / Wattage3200W High Power Density
Nominal DC Output Voltage-48V DC (Adjustable -42V ~ -58V)
Operating Ambient Temperature-40°C to +75°C Harsh Climate Range
AC Input Voltage Range85V - 300V AC Wide Grid Tolerance
Peak Energy Efficiency>96.0% Gold Level Efficiency

Applications

01

4G/5G Telecom Cell Sites & Distributed Power Systems

02

Carrier Core Network Facilities & IDC DC Plants

03

Industrial Automation & Utility Substation DC UPS

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