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Zhongheng NPR48-3G Genuine Telecom Hardware Shot 1
ZhonghengModel: NPR48-3G

Zhongheng NPR48-3G 3rd Gen High-Efficiency Telecom Switch-Mode Rectifier (48V 37.5A 1800W)

The Zhongheng NPR48-3G is a carrier-grade, 3rd-generation high-frequency switch-mode telecom rectifier module engineered for -48V DC power systems, delivering a rated output of 48V DC (nominal 53.5V DC, adjustable from 42V to 58V DC) with a maximum current of 37.5A and an output capacity of 1800W.

Pricing is confirmed by project configuration and quantity

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What this product is

What this product is

Architecturally, the NPR48-3G utilizes a two-stage conversion topology combining a Continuous Conduction Mode (CCM) Boost PFC front-end (achieving PF > 0.99 and ultra-low THD) with an isolated zero-voltage-switching (ZVS) resonant DC-DC stage. Governed by high-speed digital signal controllers (DSP/MCU), it interfaces seamlessly with power system controllers via CAN/RS485 buses, supporting autonomous float/equalize battery charging, telemetries, and carrier-standard EMC/safety compliance.

What problem it solves

The NPR48-3G eliminates frequent downtime and power supply failures caused by unstable utility grids, extreme voltage sags, and transient line surges in remote or emerging regions. Its autonomous active current sharing prevents circulating currents and thermal overloading across paralleled arrays, while hot-swap capability eliminates network outages during routine maintenance and system expansions.

Who and where it is for

Ideal for wireless base stations (macro/micro BTS for 4G/5G), outdoor integrated telecom enclosures, central office transmission nodes, optical access networks (FTTx/OLT), and industrial automation control centers requiring uninterrupted 48V DC power.

Core advantages

    Technical specifications

    Key specificationsValue
    Rated Output Voltage48V DC (42V~58V DC, 标称53.5V)
    Maximum Output Current37.5A
    Rated Output Power1800W
    AC Input Voltage Range85V AC ~ 300V AC
    Peak Conversion Efficiency≥ 93.5%
    Operating Temperature Range-25°C to +70°C
    Cooling MethodForced Air Cooling with Intelligent Speed Fan
    Hot-Swappable SupportYes (Live Hot-Pluggable / Plug-and-Play without Power Interruption)

    Applications

    01

    Cellular base station BBU/RRU power feed and backup VRLA/LiFePO4 battery charging

    02

    Outdoor telecom cabinets for broadband optical access nodes (FTTH/OLT/ONU)

    03

    Electric utility substations and railway signaling continuous -48V DC supply frames

    04

    Data center network equipment distribution racks and edge-computing telecom shelters

    Frequently asked questions

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