
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 PSM-212C23 is an intelligent central supervisory controller engineered for Emerson/Vertiv NetSure power systems, delivering automated rectifier coordination and dual low-voltage disconnect control.
Pricing is confirmed by project configuration and quantity
Request a quoteThis controller occupies the central slot of Emerson telecom power subracks, auditing AC inputs, DC bus parameters, and battery bank health while regulating rectifier float levels and contactor states.
Solves lack of synchronized voltage regulation, prevents battery failure from undercharging or thermal runaway, and bridges field power plant telemetry to remote operations teams.
Engineered for Emerson NetSure embedded subracks, 4G/5G indoor telecom power plants, and industrial utility substation DC monitoring retrofits.
| Key specifications | Value |
|---|---|
| Operating Supply Voltage | -48V DC (-36V to -72V DC) |
| Display & Keypad | Graphic Backlit LCD Display + Buttons |
| Communication Interfaces | RS232 / RS485 / Isolated CAN Bus |
| Operating Temperature Range | -25°C to +65°C |
| Form Factor & Mounting | Standard Subrack Plug-in Architecture |
| Battery Management | Temp Compensation / Equalize / LLVD |
Emerson

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

48V 30A switch-mode telecom rectifier featuring an ultra-wide AC input range, autonomous active current sharing, and CAN/RS485 digital monitoring.

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.