Description
Ensure uninterrupted power delivery and simplified UPS servicing with the Vertiv Liebert NMBHW81 Maintenance Bypass Cabinet, engineered specifically for the Vertiv Liebert Nfinity UPS systems. This hardwired 20kVA solution offers seamless “wrap around” protection, allowing maintenance or removal of the UPS without disrupting the load.
The NMBHW81 model includes a 125A output circuit breaker, manual bypass switch, and UPS input disconnect, delivering complete control and flexibility. With a compact wall-mountable design and compatibility with 120/120/208/240V output at 60 or 50Hz, this bypass switch is ideal for data centers, network closets, and other mission-critical environments.
Note: Isolation transformer not included.
| Feature | Details |
|---|---|
| Manufacturer | Vertiv |
| Brand Name | Liebert |
| Model Number | NMBHW81 |
| Product Type | Bypass Switch |
| Power Capacity | 20kVA |
| Current Rating | 125 Amps |
| Output Voltage | 120/120/208/240V |
| Frequency Supported | 50Hz / 60Hz |
| Bypass Features | Manual bypass switch, UPS input disconnect |
| Circuit Protection | 125A Output Circuit Breaker |
| Isolation Transformer | Not Included |
| Mounting Type | Wall-mountable |
| Shipping Weight | 52 lbs |
| Condition | New and Factory Fresh |
| Country of Origin | Mexico |
| Compatible With | Vertiv Liebert Nfinity UPS |
Payment & Security
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
Building a Complete AV System?
This product is rarely deployed alone. It’s typically part of a fully integrated AV system. AVENDOR designs, integrates, and supports end-to-end environments—from single rooms to enterprise-wide deployments.
- System Design & Engineering
- Installation & Integration
- Programming & Ongoing Support
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