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.
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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%.
Helps telecom operators and data centers lower PUE, significantly cuts waste heat generation to reduce cooling overhead, and lowers total cost of ownership (TCO).
Widely deployed in green 5G cell sites, edge micro data centers, central office energy retrofits, and high-density telecom power racks.
| Key specifications | Value |
|---|---|
| AC Input Voltage | 85V to 300V AC (Nominal 220V/230V) |
| Power Factor & THD | >0.99 (Rated full load) |
| Cooling & Form Factor | Variable-Speed Fan / Subrack Hot-Swap |
| Rated DC Output Current | -48VDC (-42V ~ -58V) |
| Nominal DC Output Voltage | -48VDC (-42V ~ -58V) |
| Peak Energy Efficiency | 96.2% |
| Overall System Efficiency | Up to 96.2% (Gold Standard) |
| Acoustic Noise | ≤ 55 dBA (at 25°C ambient load) |
| Ingress Protection Rating | IP20 (Indoor Dust & Finger Proof) |
| Dielectric Withstand Voltage | 3000VAC Input to Ground (< 5mA) |
Delta
The Delta DPR2900B-48 is an industry-standard 1U hot-swappable telecom rectifier module delivering -48V 50A (2900W) at >95% efficiency, engineered for extreme reliability across global wireless stations.
Carrier-grade industrial high-frequency switch-mode power supply designed for high-efficiency AC/DC conversion, bus regulation, and intelligent battery management.
The Delta DPR4830-D-DCE is an ultra-compact telecom rectifier delivering -48V 30A (1740W), engineered for micro-sites, DAS repeaters, and space-constrained indoor telecom wall boxes.
The Delta DPR4850-D-DCE is a high-density digital AC/DC rectifier converting single-phase AC to clean -48V DC power with active power factor correction and auto
