The Vertiv NetSure 731 A91-S2 is a high-density 19-inch 6U embedded telecom DC power system delivering up to 300A output, engineered for 4G/5G wireless sites, central offices, and edge computing nodes.
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An integrated -48VDC power system comprising a rectifier subrack, AC/DC distribution assembly, dual Low Voltage Disconnect contactors, and an advanced M830B/NCU controller. It houses up to six high-efficiency rectifiers to convert fluctuating AC mains into clean, regulated DC power.
Eliminates site footprint constraints in tight telecom shelters, mitigates grid instability across 85-300VAC, and prevents catastrophic battery degradation through precision multi-stage low-voltage disconnection.
5G outdoor base station enclosures, telecom aggregation nodes, edge computing rooms, enterprise core routing facilities, and industrial automation networks demanding robust -48V backup.
| Key specifications | Value |
|---|---|
| AC Input Voltage | 85VAC ~ 300VAC (Nominal 220VAC) VAC |
| Smart Monitoring Controller | M830B / NCU Controller |
| Cooling System Architecture | Intelligent temperature-controlled cooling |
| Nominal Output Voltage | -48VDC (-42V ~ -58V) VDC |
| Rated DC Output Current | 300A (System Capacity 14.4kW) |
| Managed Rectifier Capacity | 4 Slots for R48-2900U Modules |
| Peak Energy Efficiency | ≥96.0% |
| Form Factor Dimensions (HxWxD) | 177 (4U) × 482 × 360 mm |
| Operating Temperature Range | -40°C ~ +65°C |
Vertiv
Carrier-grade industrial high-frequency switch-mode power supply designed for high-efficiency AC/DC conversion, bus regulation, and intelligent battery management.
Standard 19-inch rack-mount embedded DC power system engineered for wide-range AC input, active rectifier redundancy, and tiered load/battery low-voltage disconnect.
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The Vertiv ER22020-T is a 4.4kW high-power switch-mode rectifier module delivering 220Vdc/20A for utility substations and critical industrial DC systems. Powered by full DSP digital control and LLC resonant conversion, it provides industry-leading electrical stability across extreme temperatures.
