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VERTIV NMBHW81 Hardwired 20kVA Bypass Cabinet for Liebert Nfinity UPS - 125A Output - Wall-Mountable
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Product Features
Product Overview
The Vertiv NMBHW81 is a hardwired bypass cabinet engineered for Vertiv Liebert Nfinity uninterruptible power supply (UPS) systems. This cabinet provides a critical maintenance bypass function, allowing the connected UPS to be safely isolated for service or replacement without interrupting power to the protected load.
Designed for 20 kVA applications, the cabinet includes a 125A output circuit breaker and supports multiple output voltage configurations including 120V, 208V, and 240V at either 50Hz or 60Hz frequencies. The wall-mountable form factor makes it suitable for space-constrained installations where rack mounting isn't practical.
This section brings together practical product details such as Current, Form Factor, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Technical Overview
This bypass cabinet delivers 20 kVA of bypass capacity with a 125A output circuit breaker. The electrical design supports flexible output voltage configurations including 120V, 208V, and 240V operation at both 50Hz and 60Hz frequencies, making it compatible with diverse power infrastructures.
The cabinet incorporates visual indicator lamps that provide immediate status confirmation for UPS input, UPS output, and bypass source availability. This monitoring capability helps technicians quickly verify power paths during maintenance operations or troubleshooting scenarios.
This section brings together practical product details such as Current, Form Factor, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The NMBHW81 bypass cabinet provides essential protection for critical power infrastructure by enabling safe UPS maintenance without service interruption. The integrated visual indicators offer immediate confirmation of power path status, reducing troubleshooting time during maintenance windows.
Maintenance Safety
Enables safe isolation of the UPS for service or replacement while maintaining continuous power to connected equipment through the bypass path.
- Zero downtime during maintenance
- Safe technician working conditions
- Protected load continuity
Visual Monitoring
Indicator lamps provide at-a-glance confirmation of UPS input, UPS output, and bypass source availability status.
- Instant status verification
- Reduced troubleshooting time
- Enhanced operational awareness
Installation Flexibility
Wall-mountable design accommodates installations where rack space is limited or unavailable, providing deployment options for diverse facility layouts.
- Space-efficient installation
- Adaptable to facility constraints
- Simplified mounting options
Deployment / Use Cases
The Vertiv NMBHW81 bypass cabinet is specifically designed for deployment with Vertiv Liebert Nfinity UPS systems in environments requiring high-availability power protection. It serves as a critical component in maintaining uptime during scheduled maintenance or unexpected UPS service events.
Typical applications include data centers, network operations centers, healthcare facilities, financial institutions, and industrial control systems where uninterrupted power is essential. The cabinet enables IT and facilities teams to perform UPS maintenance, battery replacement, or system upgrades without disrupting operations.
Data Center Maintenance
Enables scheduled UPS maintenance in data center environments without affecting server and network equipment operation.
Critical Infrastructure Support
Provides maintenance bypass capability for healthcare, financial, and industrial systems where power continuity is non-negotiable.
Highlights
- 20 kVA hardwired bypass cabinet for Vertiv Liebert Nfinity UPS systems
- Includes 125A output circuit breaker for 20 kVA applications
- Wall-mountable form factor for space-constrained installations
- Visual indicator lamps confirm UPS input, UPS output, and bypass source status
- Supports 120V, 208V, and 240V output configurations
- Compatible with both 50Hz and 60Hz power frequencies
- Two-year warranty coverage
- Manufactured in Mexico
Specifications
| Specifications | |
|---|---|
| Manufacturer | Vertiv |
| Manufacturer Part Number | NMBHW81 |
| Brand Name | Vertiv Liebert |
| Product Name | Bypass Switch |
| Product Type | Bypass Switch |
| Power Description | |
| Current | 125 A |
| Physical Characteristics | |
| Form Factor | Wall-mountable |
| Miscellaneous | |
| Country of Origin | Mexico |
FAQ
What is the purpose of this bypass cabinet?
The Vertiv NMBHW81 bypass cabinet provides a maintenance bypass function for Vertiv Liebert Nfinity UPS systems. It allows the UPS to be safely isolated for service, battery replacement, or upgrades while maintaining continuous power to connected equipment through the bypass path, ensuring zero downtime during maintenance operations.
What power capacity does this bypass cabinet support?
This cabinet is rated for 20 kVA applications and includes a 125A output circuit breaker. It supports multiple output voltage configurations including 120V, 208V, and 240V, and is compatible with both 50Hz and 60Hz power frequencies for flexible deployment in diverse electrical infrastructures.
How is this bypass cabinet installed?
The NMBHW81 features a wall-mountable form factor designed for installations where rack space is limited or unavailable. This mounting approach provides installation flexibility in space-constrained environments while ensuring the cabinet remains accessible for maintenance and service operations.
What visual indicators does the cabinet include?
The cabinet incorporates indicator lamps that provide visual confirmation of UPS input, UPS output, and bypass source availability. These indicators enable technicians to quickly verify power path status during maintenance operations, reducing troubleshooting time and enhancing operational awareness.
What warranty coverage is provided?
Vertiv provides a two-year warranty for the NMBHW81 bypass cabinet. This warranty covers manufacturing defects and ensures reliable operation when installed and used according to Vertiv's specifications and guidelines for Liebert Nfinity UPS systems.
What are the compatible UPS systems?
The NMBHW81 is specifically designed for use with Vertiv Liebert Nfinity uninterruptible power supply systems. It provides the bypass functionality required for safe maintenance of these UPS units while maintaining continuous power to critical loads during service operations.
| Qty | Price | Available |
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