Delta ESR-48/40AC Compact Switch-Mode Telecom Rectifier Module (-48V 40A 2000W)
Delta ESR-48/40AC -48V 40A 2000W compact telecom rectifier with short depth for tight enclosure installations.
DeltaModel: ESR-48/50DE
Delta ESR-48/50DE Ultra-High Efficiency Telecom Switch-Mode Rectifier Module (-48V 50A >96% Efficiency)
The Delta ESR-48/50DE is a green energy-saving telecom rectifier module achieving over 96% peak conversion efficiency, delivering -48V 50A (up to 2900W) with digital resonant soft-switching technology.
Pricing is confirmed by project configuration and quantity
Request a quote- Nominal Output Voltage
- -48V DC (Range: -42V to -58V)
- Rated Output Current
- 50A
- Peak Conversion Efficiency
- >96.2% Ultra-High Efficiency
- AC Input Range
- 85V to 300V AC (Nominal 220V/230V)
- Input Power Factor
- >0.99 (Rated full load)
- Cooling & Form Factor
- Variable-Speed Fan / Subrack Hot-Swap
What this product is
What this product is
As the core energy engine of Delta modern telecom power systems, this module converts AC power into telecom-grade stabilized DC, cutting conversion power losses by over 50%.
What problem it solves
Helps telecom operators and data centers lower PUE, significantly cuts waste heat generation to reduce cooling overhead, and lowers total cost of ownership (TCO).
Who and where it is for
Widely deployed in green 5G cell sites, edge micro data centers, central office energy retrofits, and high-density telecom power racks.
Core advantages
- Industry-Leading Peak Efficiency: Peak efficiency exceeds 96.2%, meeting top-tier global green energy standards and minimizing heat dissipation.
- Smart Multi-Unit Hibernation: Supports intelligent supervisory sleep cycling to keep active rectifiers operating at peak efficiency points.
- High PF and Low Harmonics: Power factor >0.99 and THD <5%, preventing harmonic pollution to upstream transformers and generators.
- Effortless Hot-Swap Capability: Standard guide-rail mechanism enables single-technician replacement within 10 seconds without site downtime.
Technical specifications
| Key specifications | Value |
|---|---|
| Nominal Output Voltage | -48V DC (Range: -42V to -58V) |
| Rated Output Current | 50A |
| AC Input Range | 85V to 300V AC (Nominal 220V/230V) |
| Input Power Factor | >0.99 (Rated full load) |
| Cooling & Form Factor | Variable-Speed Fan / Subrack Hot-Swap |
| Peak Conversion Efficiency | >96.2% Ultra-High 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
Frequently asked questions
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