Q: What hardware resilience and industrial protection designs does the R48-4300E3 feature for severe grid and thermal environments?

The R48-4300E3 is engineered for harsh outdoor telecom enclosures and dense computing facilities, with an operating temperature envelope of -40°C to +75°C (full output between -40°C and +45°C, with smart thermal protection derating up to +75°C). Thermal dissipation utilizes a front-to-back forced-air path with an integrated variable-speed brushless fan that adjusts RPM based on load and temperature, minimizing acoustic noise and dust ingestion. Surge protection meets stringent IEC/EN 61000-4-5 standards. Electrical protection includes input over/under-voltage cut-off, output over-voltage hardware crowbar lockout (OVP), short-circuit hiccup recovery, output reverse-polarity protection, and deep battery discharge coordination, offering an MTBF exceeding 500,000 operational hours.

Question 1

What are the core electrical output specifications and efficiency ratings of the Vertiv R48-4300E3 rectifier module?

Accepted Answer

The Vertiv R48-4300E3 is a carrier-grade high-density telecom rectifier module delivering a rated output power of 4300W with a nominal -48V DC output (adjustable from 42V to 58V DC) and a rated current of 89.6A. Utilizing high-efficiency soft-switching topology and full digital DSP control, it achieves a peak conversion efficiency exceeding 96.2%. The module operates over an ultra-wide AC input range of 85V to 300V AC (delivering full 4300W output between 176V and 300V AC, with linear derating below 176V AC). It features an active Power Factor Correction (PFC) rating of ≥0.99 and total harmonic distortion (THD) ≤5%, minimizing reactive load on upstream generator sets and mains transformers.

Question 2

Which power system subracks are compatible with the R48-4300E3, and does it support hot-swapping and mixed parallel load sharing?

Accepted Answer

The R48-4300E3 is built in a standard 1U high-density form factor, natively compatible with Vertiv NetSure 700/800 series power shelves and cabinets (including NetSure 701, NetSure 801, and NetSure 721 power systems). It supports true live hot-swapping for uninterrupted telecom-grade maintenance. Integration is handled via standard CAN-bus communication, linking seamlessly to Vertiv supervision controllers such as the NCU, M830B, and M530B for telemetry, alarms, and automatic voltage regulation. For system expansions, autonomous active current sharing maintains unbalance within <±5%. While mixed insertion with older rectifiers (like R48-3200e or R48-3500e) is supported under proper controller profile settings, uniform deployment per shelf is recommended to maintain optimized airflow and thermal profiles.

Question 3

What hardware resilience and industrial protection designs does the R48-4300E3 feature for severe grid and thermal environments?

Accepted Answer

The R48-4300E3 is engineered for harsh outdoor telecom enclosures and dense computing facilities, with an operating temperature envelope of -40°C to +75°C (full output between -40°C and +45°C, with smart thermal protection derating up to +75°C). Thermal dissipation utilizes a front-to-back forced-air path with an integrated variable-speed brushless fan that adjusts RPM based on load and temperature, minimizing acoustic noise and dust ingestion. Surge protection meets stringent IEC/EN 61000-4-5 standards. Electrical protection includes input over/under-voltage cut-off, output over-voltage hardware crowbar lockout (OVP), short-circuit hiccup recovery, output reverse-polarity protection, and deep battery discharge coordination, offering an MTBF exceeding 500,000 operational hours.

Key specifications	Value
Rated Output Power	4300W
Rated Output Current	89.6A
Power Conversion Efficiency	96.2%
AC Input Voltage Range	85V~300V AC
Nominal DC Output Voltage	-48V DC (42V~58V)
Cooling Method	Built-in intelligent variable-speed temperature-controlled fan with forced-air cooling

Vertiv R48-4300E3 High Efficiency Telecom Power Rectifier Module -48V 89.6A 4300W

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What this product is

What problem it solves

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Applications

Telecom Base Station

Data Center

Industrial Automation Power Supply

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