
Emerson HD4825-3 Telecom Switch-Mode Rectifier Module
Compact 48V/25A single-phase high-frequency rectifier offering ultra-wide AC input tolerance and autonomous active load sharing.

The Emerson HD4830-3 is a high-reliability, carrier-grade -48V/30A (1740W) hot-swappable switch-mode rectifier module engineered for critical telecom and industrial DC power plants.
Pricing is confirmed by project configuration and quantity
Request a quoteAn industrial AC-DC power conversion unit incorporating Active Power Factor Correction (PFC) and advanced resonant conversion topology to produce stable, low-noise -48V DC power within NetSure and PS-series rack systems.
Mitigates power outages in erratic grid conditions by providing high electrical ride-through, while modular hot-swapping and active load sharing eliminate single-point failures without system downtime.
Cellular BTS/NodeB/eNodeB base stations, optical transport network terminals, utility substation DC panels, and enterprise core telecom facilities.
| Key specifications | Value |
|---|
Emerson

Compact 48V/25A single-phase high-frequency rectifier offering ultra-wide AC input tolerance and autonomous active load sharing.

Featuring active power factor correction (APFC) and high-frequency soft-switching resonance topology, the HD4850-2 delivers a peak conversion efficiency exceeding 93.0%. An intelligent variable-speed cooling fan dynamically regulates thermal airflow based on real-time load and ambient temperatures. Fully hot-pluggable under load, the module incorporates comprehensive input/output overvoltage, short-circuit, and thermal foldback protections to safeguard continuous 24/7 network availability.

Engineered with advanced dual-DSP digital architecture and active Power Factor Correction (PFC), the R48-5800E minimizes harmonic distortion while maintaining flat efficiency curves across varying loads. Featuring intelligent variable-speed forced-air cooling, CAN bus system integration, and live hot-pluggability, this rectifier provides maximum service continuity, silent acoustic optimization, and resilient power conversion under harsh grid and thermal conditions.

Built around an industrial low-power embedded processor with natural convection cooling, the M500D delivers operational resilience from -20°C to +65°C. It controls parallel rectifiers via an isolated internal RS485 multidrop bus to perform autonomous load-sharing and dynamic energy-saving sleep cycling, while north-bound Fast Ethernet (FE), RS232, and RS485 ports support SNMP, Modbus, and proprietary protocols for remote network integration.