The Zhujiang SMR3004D is a carrier-grade high-power switch-mode rectifier module engineered for telecommunication networks, delivering a nominal 48V DC output at up to 50A and a rated power of 2900W with an adjustable operating range of 42V to 58V DC.
Need to confirm a model, specification, or project configuration? Our team can follow up by email or phone.
Architecturally, the SMR3004D consists of a high-efficiency front-end APFC stage that accepts a wide 90V to 290V AC input, achieving a power factor above 0.99 while mitigating total harmonic distortion (THD). The isolated DC-DC stage employs full-bridge soft-switching resonance to produce a low-ripple, highly stabilized 48V DC supply. An onboard supervisory microcontroller monitors thermal sensors, phase parameters, and feedback loops to control autonomous single-wire parallel current sharing, precise current limit curves, and multi-tier protection circuits against input transients, output overvoltage clamping (OVP), short circuits, and thermal runaway in compliance with global telecom EMC and safety standards.
The SMR3004D addresses operational challenges in remote telecom base stations subject to unstable, fluctuating AC mains. Its 90V~290V AC dynamic tolerance eliminates frequent rectifier dropouts and battery cycle exhaustion in rural grids. Integrated thermal derating algorithms prevent catastrophic thermal failures in enclosed outdoor cabinets, while its zero-arcing hot-swappable interface allows live module replacement without inducing DC bus transients or telecom transmission dropouts.
Optimized for 4G/5G macro BTS power plants, central office (CO) telecom power racks, distributed cellular shelter sites, microwave transmission links, and industrial DC UPS systems for utility automation and railway communications.
| Key specifications | Value |
|---|---|
| AC Input Voltage | 90V AC ~ 290V AC |
| Rated Output Voltage | -48VDC (-42V ~ -58V) |
| Maximum Output Current | 50A |
| Rated Output Power | 2900W |
| Maximum Efficiency | ≥ 92.0% |
| Operating Temperature Range | -40°C ~ +75°C |
| Cooling System | Forced Air Cooling with Intelligent Speed Fan |
| Hot-Swappable Support | Yes (Live Hot-Pluggable / Plug-and-Play without Power Interruption) |
Zhujiang
Featuring a peak conversion efficiency of ≥ 91.5%, the SMPS2004 integrates active power factor correction (APFC) with a digital microprocessor control topology. Engineered with forced-air cooling via an intelligent variable-speed fan and an ultra-wide input range of 90V AC to 290V AC, it delivers live hot-plug capability and carrier-class availability for mission-critical telecom and industrial platforms.
Genuine Zhujiang SMPS1002H-I telecom rectifier module engineered for dependable -48V DC power conversion in utility and telecom sites.
Engineered for harsh operating environments, the 4850C achieves peak conversion efficiency greater than 92.5% and a power factor of 0.99 via advanced Active Power Factor Correction (APFC) and resonant topologies. It features forced-air cooling driven by an intelligent variable-speed brushless fan, seamless live hot-swappability, autonomous active current-sharing across parallel units, and robust protection against input line disturbances, voltage surges, and output anomalies.
Achieving a peak efficiency exceeding 94.5%, the 4850N2 combines full digital control topology with an intelligent speed-regulated brushless DC cooling fan for superior power density. Designed for rugged electrical environments, it features active power factor correction (PFC), comprehensive CAN bus communication, and true live hot-plug capability, guaranteeing carrier-grade reliability and exceptionally high MTBF.
