The Delta ESR-48/56BF is a carrier-grade high-frequency switch-mode rectifier module delivering a rated 54V/56A output with a continuous capacity of 3000W, designed for telecom DC power plants and critical industrial infrastructure.
Pricing is confirmed by project configuration and quantity
Request a quoteThe ESR-48/56BF utilizes a sophisticated dual-stage power conversion architecture: the input stage incorporates an active boost power factor correction (PFC) circuit ensuring a power factor near unity with total harmonic distortion (THD) under 5%; the isolated conversion stage employs a full-bridge LLC resonant DC-DC topology governed by a high-performance digital signal processor (DSP). An auxiliary microcontroller (MCU) alongside an isolated CAN bus interface continuously monitors AC mains status, DC bus ripple, power MOSFET thermal dissipation, and internal fan tachometer feedback, executing real-time control and diagnostic reporting to the system supervisory unit.
Eliminates power failure risks caused by severe grid sags, surges, and overvoltage events in remote utility environments; resolves thermal throttling and component degradation in high-density outdoor cabinets via an optimized internal aerodynamic wind tunnel; and prevents single-point cascade failures through precise autonomous active current-sharing among parallel modules.
Tailored for 5G/4G macro base station cabinets, centralized radio access networks (C-RAN BBU pools), enterprise edge computing data centers, railway signaling DC microgrids, and mission-critical SCADA power networks.
| Key specifications | Value |
|---|---|
| Rated Output Voltage | -48V DC (42V~58V) |
| Peak Conversion Efficiency | ≥ 96.0% |
| Operating Temperature Range | -40°C to +75°C |
| Cooling Method | Forced Air Cooling with Intelligent Speed Fan |
| Protection Features | Over-voltage, Short-circuit, Over-temperature, Surge |
| Hot-Swappable Support | Yes (Live Plug-and-Play Support) |
| Total Harmonic Distortion (THD) | ≤ 5% (Total Harmonic Distortion) |
| Rated Power Factor | ≥ 0.99 at Rated Load |
| Standard Compliance & Certifications | CE, UL, RoHS, IEC 60950, EN 300 386 |
Delta
Engineered with dual DSP digital architecture and an advanced LLC resonant conversion topology, the rectifier attains peak energy efficiency exceeding 96.2%. It integrates an active power factor correction (PFC) stage, intelligent variable-speed forced-air cooling, and full N+1 parallel hot-swap capability, offering industry-leading power density and carrier-class MTBF in harsh utility grid conditions.
Featuring advanced digital signal processing (DSP) control and optimized resonant switching topologies, this rectifier delivers peak efficiency exceeding 96%, dramatically lowering thermal overhead and utility OPEX. It incorporates an intelligent, temperature-controlled forced-air cooling system capable of continuous operation across an ultra-wide ambient temperature window of -40°C to +75°C. With active autonomous load sharing, N+X modular redundancy, and carrier-grade galvanic isolation, the ESR-48/60 AA ensures zero-downtime reliability for Tier-1 network deployments.
Engineered with an industry-leading peak efficiency of ≥95.0%, the ESR4840AC features advanced resonant power topologies, full digital signal processing (DSP) control, and an intelligent variable-speed cooling fan. Operating across a wide -40°C to +75°C temperature envelope, it provides carrier-grade reliability, live hot-pluggability, and precise active load sharing for N+1 redundant telecom power solutions.
Featuring advanced Active Power Factor Correction (APFC) and high-frequency soft-switching resonance topology, the ESR4850DE achieves a peak conversion efficiency of ≥95.5%. Forced-air cooled by an intelligent variable-speed fan and monitored via digital bus architecture, it supports live hot-plugging for zero-downtime, continuous carrier-grade operation under demanding environmental conditions.
