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VertivModel: Vertiv Liebert UL33

Vertiv Liebert UL33 3-Phase In 3-Phase Out Industrial Telecom UPS (20kVA-40kVA)

The Vertiv Liebert UL33 is an industrial-grade telecom power or datacenter infrastructure module engineered for maximum uptime, high energy efficiency, and mission-critical reliability.

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Rated System Output / Load Capacity
20kVA ~ 40kVA (3-Phase In / 3-Phase Out)
Operating Input Voltage Range
304VAC ~ 478VAC Wide Input Grid Range
Output Voltage Regulation & Ripple
-48VDC (-42V ~ -58V)
Core Power Topology & Conversion Unit
Intelligent Multi-Stage High-Capacity Battery Management
Efficiency & Performance Rating
≥ 96.0%
Physical Dimensions & Mounting Format
1400 × 500 × 800 mm

What this product is

What this product is

A field-proven industrial hardware system providing clean regulated DC power, precision thermal management, or unified physical equipment housing.

What problem it solves

Eliminates downtime from grid surges, thermal throttling, and power outages, ensuring continuous 24/7/365 availability.

Who and where it is for

Telecom core switching sites, 5G wireless base stations, enterprise server rooms, and modular edge computing deployments.

Core advantages

  • Heavy-duty industrial grade components designed for 24/7/365 uninterrupted mission-critical operation
  • Ultra-wide operating voltage tolerance to thrive in unstable utility grid conditions
  • Fully digital DSP microprocessor control with factory-aligned diagnostic routines
  • High-density modular architecture supporting hot-swappable zero-downtime maintenance

Technical specifications

Key specificationsValue
Efficiency & Performance Rating≥ 96.0%
Physical Dimensions & Mounting Format1400 × 500 × 800 mm
Rated System Output / Load Capacity20kVA ~ 40kVA (3-Phase In / 3-Phase Out)
Operating Input Voltage Range304VAC ~ 478VAC Wide Input Grid Range
Core Power Topology & Conversion UnitIntelligent Multi-Stage High-Capacity Battery Management
Output Voltage Regulation & Ripple-48VDC (-42V ~ -58V)
Cooling & Thermal ManagementCooling & Thermal Management
Operating Ambient Temperature WindowOperating Ambient Temperature Window °C
Telemetry Communication Bus ProtocolTelemetry Communication Bus Protocol

Applications

01

Cellular Towers & Core Facilities

02

Industrial Automation Enclosures

03

Railway Signaling Infrastructure

04

Enterprise Edge Datacenter Racks

Frequently asked questions

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