Delta ESR-48/50DE Ultra-High Efficiency Telecom Switch-Mode Rectifier Module (-48V 50A >96% Efficiency)
Delta ESR-48/50DE -48V 50A telecom rectifier delivering >96% peak efficiency to dramatically reduce site PUE and power loss.
DeltaModel: ESR-48/40AC
Delta ESR-48/40AC Compact Switch-Mode Telecom Rectifier Module (-48V 40A 2000W)
The Delta ESR-48/40AC is a compact telecom rectifier module delivering -48V 40A (2000W max power), engineered for space-constrained access network sites and micro telecom shelters.
Pricing is confirmed by project configuration and quantity
Request a quote- Nominal Output Voltage
- -48V DC (Adjustable: -42V to -58V)
- Rated Output Current
- 40A Rated Output
- Rated Output Power
- 2000W
- AC Input Range
- 85V to 300V AC (Nominal 220VAC)
- Operating Temperature Range
- -25°C to +70°C
- Cooling & Form Factor
- Smart DC Fan / Shallow-Depth Hot-Swap
What this product is
What this product is
This unit installs into Delta 1U/2U or compact embedded power subracks, converting single-phase AC into telecom-grade stabilized DC for micro station power systems.
What problem it solves
Solves space limitation in shallow outdoor enclosures, remote maintenance difficulties, and premature shutdowns caused by unstable utility voltages.
Who and where it is for
Engineered for 4G/5G small cells, FTTH optical distribution hubs, railway signaling relay boxes, and industrial embedded power supplies.
Core advantages
- Compact Shallow-Depth Chassis: Reduced depth and light weight facilitate mounting in tight wall-mount boxes and shallow outdoor enclosures.
- Wide Utility Grid Adaptability: Operates from 85V to 300V AC, continuing to deliver stable derated power down to 90VAC input.
- Arc-Free Hot-Swap & Current Sharing: Plug-and-play design with autonomous parallel load-sharing prevents single-point system outages.
- Low Acoustic Noise Profile: Acoustically optimized airflow path ensures ultra-quiet operation compliant with urban residential site requirements.
Technical specifications
| Key specifications | Value |
|---|---|
| Nominal Output Voltage | -48V DC (Adjustable: -42V to -58V) |
| Rated Output Current | 40A Rated Output |
| Rated Output Power | 2000W |
| AC Input Range | 85V to 300V AC (Nominal 220VAC) |
| Operating Temperature Range | -25°C to +70°C |
| Cooling & Form Factor | Smart DC Fan / Shallow-Depth Hot-Swap |
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
Frequently asked questions
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