Liebert – ITA2 MBC Maintenance Bypass switch – 20000 – 20 kVA – Single Phase Online UPS

Vertiv Liebert ITA2 Maintenance Bypass Cabinet (MBC) — 4U / 9U / 12U • Service Bypass + Paralleling Support

The Vertiv Liebert ITA2 Maintenance Bypass Cabinet (MBC) is designed to maximize system availability by keeping critical loads powered during routine UPS service, maintenance, or replacement. A built-in maintenance bypass interlock helps ensure proper bypass operation, providing a safer, more controlled service path while minimizing downtime for protected equipment.

Engineered specifically for Liebert ITA2 15–40kVA UPS models, the ITA2 MBC is available for single-UPS operation in a compact 4U form factor—supporting 15/20kVA at 208V or 30/40kVA at 400V. For capacity growth and redundancy, Vertiv also offers specialized MBC options that enable the ITA2’s intelligent paralleling function, allowing multi-UPS configurations to scale while maintaining availability.

Paralleling MBC Options

• 9U Paralleling MBC — Dedicated to two-UPS systems for (1+1) redundancy or (2+0) paralleling capability.
• 12U Paralleling MBC — Dedicated to three-UPS systems for (2+1) paralleling to increase capacity with backup/redundancy.

Key Features & Benefits

• Keeps loads online during service — Route power around the UPS for maintenance or replacement.
• Maintenance bypass interlock — Helps ensure proper bypass operation for safer servicing.
• Designed for ITA2 15–40kVA — Purpose-built compatibility with Liebert ITA2 UPS models.
• Compact 4U single-UPS bypass — Supports 15/20kVA at 208V or 30/40kVA at 400V (single UPS).
• Enables intelligent paralleling — Specialized MBC options activate paralleling for redundancy and capacity growth.
• 2-year warranty — Coverage for both single-UPS and paralleling MBC configurations.

Technical Overview