The Vertiv NetSure 531 A31-S2 is a high-density, 5U 19-inch subrack -48V DC power system delivering up to 120A output capacity for telecom network infrastructure.
Need to confirm a model, specification, or project configuration? Our team can follow up by email or phone.
The NetSure 531 A31-S2 is an integrated subrack telecom power plant comprising AC input distribution, DC load/battery distribution, an advanced supervision controller (M530B/NCU), and hot-pluggable switch-mode rectifiers (such as the R48-2000e3). It converts raw utility or generator AC power into regulated -48V DC power for carrier-grade network equipment while managing battery charge cycles and protection via dual-disconnect contactors.
Eliminates footprint constraints in space-constrained roadside and indoor telecom cabinets, tolerates unstable grid conditions (85–300VAC) without dropping loads, and protects battery longevity through precision thermal compensation and deep-discharge protection.
4G/5G baseband unit (BBU) cabinets, outdoor small-cell shelters, optical line terminal (OLT) aggregation nodes, and enterprise critical telecom rooms.
| Key specifications | Value |
|---|---|
| Smart Monitoring Controller | M221S / M522B Controller Unit |
| AC Input Voltage | 85VAC ~ 300VAC (Nominal 220VAC) VAC |
| Cooling System Architecture | Temperature-controlled DC fan cooling |
| Nominal Output Voltage | -48VDC (-42V ~ -58V) VDC |
| Managed Rectifier Capacity | 3 Slots for R48-2000e3 / R48-2900U Modules |
| Rated DC Output Current | 120A (System Capacity 5.8kW) |
| Form Factor Dimensions (HxWxD) | 133 (3U) × 482 × 330 mm |
| Peak Energy Efficiency | ≥96.0% |
| 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.
The Vertiv ER22010-T is a 220Vdc/10A high-voltage DC switch-mode rectifier module engineered for utility substations, power plants, and HVDC distribution systems. Utilizing advanced resonant soft-switching technology, it delivers >94% peak efficiency, hot-swappable reliability, and comprehensive electrical protection.
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.
