Vertiv BMK1115601-006 Subrack Telecom DC Power System (-48V 200A 3U)
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.
VertivModel: NetSure 731 A91-S2
Vertiv NetSure 731 A91-S2 Subrack Telecom DC Power System (-48V 300A 4U)
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.
Pricing is confirmed by project configuration and quantity
Request a quote- Nominal Output Voltage
- -48VDC VDC
- AC Input Voltage Range
- 85VAC ~ 300VAC (Nominal 220VAC) VAC
- Rated Output Current
- 300A (System Capacity 14.4kW)
- Peak Conversion Efficiency
- ≥96.0%
- Managed Rectifier Capacity
- 4 Slots for R48-2900U Modules
- Smart Monitoring Controller
- M830B / NCU Controller
What this product is
What this product is
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.
What problem it solves
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.
Who and where it is for
5G outdoor base station enclosures, telecom aggregation nodes, edge computing rooms, enterprise core routing facilities, and industrial automation networks demanding robust -48V backup.
Core advantages
- Peak energy efficiency of ≥96.0%, drastically lowering heat dissipation and site operating costs
- Ultra-wide input window (85VAC to 300VAC) guaranteeing operational resilience in poor grid regions
- Dual-stage LVD architecture (LLVD for shedding non-critical loads, BLVD for absolute battery discharge protection)
- Fully hot-swappable architecture across all rectifiers and control units for zero-downtime maintenance
- Comprehensive battery care algorithms including precision thermal compensation, automated boost/float management, and scheduled SOC testing
Technical specifications
| Key specifications | Value |
|---|---|
| AC Input Voltage Range | 85VAC ~ 300VAC (Nominal 220VAC) VAC |
| Smart Monitoring Controller | M830B / NCU Controller |
| Cooling Method | Intelligent temperature-controlled cooling |
| Nominal Output Voltage | -48VDC VDC |
| Rated Output Current | 300A (System Capacity 14.4kW) |
| Managed Rectifier Capacity | 4 Slots for R48-2900U Modules |
| Form Factor Dimensions (HxWxD) | 177 (4U) × 482 × 360 mm |
| Peak Conversion Efficiency | ≥96.0% |
| Operating Temperature Range | -40°C ~ +65°C |
Applications
01
4G/5G macro and micro base transceiver stations (BTS)
02
FTTx optical line terminal (OLT) shelters and broadband aggregation sites
03
Railway signaling, SCADA, and wayside communication power supplies
04
Substation protection systems and enterprise data room DC distribution
Frequently asked questions
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