The Delta ESR-48/56CN is a high-performance, 3000W industrial-grade hot-swappable switch-mode rectifier module engineered for carrier-grade telecom macro stations and DC power systems. Featuring an advanced soft-switching topology and active digital PFC, it converts ultra-wide AC inputs ranging from 88V AC to 300V AC into a highly stabilized -48V DC (adjustable 42V~58V) output at 56A with an efficiency exceeding 94%, delivering superior power density and rugged environmental resilience.
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The Delta ESR-48/56CN utilizes a compact plug-in metal form factor integrating active power factor correction, high-frequency isolated conversion stages, and digital DSP control. It features a blind-mating rear connector carrying AC power, DC busbars, and communication lines, with a front-facing extraction handle and intelligent fan grille.
Eliminates telecom power outage risks caused by severe utility voltage fluctuations, lightning surges, and harsh environments in remote sites, while cutting cooling loads and OPEX costs through ≥94% high-efficiency conversion.
4G/5G macro cellular sites, broadband access nodes, microwave transmission stations, IDC DC distribution frames, utility substation DC panels, and rail transit automation systems.
| Key specifications | Value |
|---|---|
| Rated Output Power | 3000W High Efficiency Output Power |
| DC Output Voltage | -48VDC (-42V ~ -58V) |
| Rated Output Current | 56A (-48V DC Continuous Constant Current) |
| AC Input Voltage Range | 88V AC ~ 300V AC (Nominal 220V AC) |
| Physical Form Factor | Standard Plug-in Hot-Swappable Module Design |
| Power Conversion Efficiency | ≥ 94% |
| Cooling Method | Built-in Temperature Controlled DC Exhaust Fan |
| Operating Temperature Range | -40°C to +70°C |
Delta
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