Vertiv MP2-220N 3U MicroPOD Maintenance Bypass for Liebert 208V UPS
Overview
The Vertiv MP2-220N is a 3U MicroPOD maintenance bypass module designed for Liebert GXT5 208V UPS deployments where servicing the UPS without dropping critical loads is a hard requirement. With a NEMA L6-20P utility input and four downstream 208V outlets — (2) NEMA L6-15R and (2) NEMA L6-20R — the MP2-220N (often searched as MP2 220N) bridges utility power directly to connected equipment during UPS maintenance windows, eliminating forced downtime. If you're running a Liebert GXT5 on a 208V circuit and need to swap batteries, update firmware, or perform physical service without cutting power to rack loads, this is the bypass hardware that makes that possible.
Key Features
- NEMA L6-20P Utility Input: Designed specifically for 208V, 20A circuits — the standard feed for medium-density rack UPS deployments. Plugs directly into your facility's 208V distribution without rewiring.
- Dual Output Mix — L6-15R and L6-20R: Four total 208V outlets ((2) NEMA L6-15R, (2) NEMA L6-20R) give you flexibility to stay connected to both 15A and 20A 208V loads simultaneously during bypass. No adapters, no load shedding required.
- 3U Rack Form Factor: Occupies 3U of rack space in a standard 19-inch cabinet, pairing cleanly with Liebert GXT5 rack-mount UPS units and keeping bypass hardware co-located with the UPS in the same enclosure.
- Maintenance Bypass Architecture: Routes utility power around the UPS inverter/charger entirely, so field technicians can service or replace the UPS without interrupting downstream equipment — critical in healthcare, telecom, and always-on IT environments where even scheduled downtime carries real cost.
- Wall and Rack Mounting Support: Compatible with both rack-mount and wall-mount installation configurations, giving installers flexibility in constrained or non-standard equipment rooms.
Integration and Compatibility
The MP2-220N is designed for use within the Vertiv Liebert GXT5 UPS ecosystem. The GXT5 family supports a broad set of accessories including external battery cabinets (GXT5-EBC series), rack mounting kits (2POSTRMKIT, RMKIT18-32, 2UTELECOMRKIT), environmental sensors (SN-T, SN-TH, SN-2D, SN-3C, SN-L20), and remote monitoring via the IS-RELAY contact closure module. For larger 208V three-phase bypass requirements, Vertiv also offers the power and UPS category with higher-capacity MicroPOD variants. The MP2-220N sits specifically in the 208V single-phase segment alongside the TDU-3500RTL620 step-down distribution unit, which handles downstream 120V loads from the same L6-20P source.
If your load mix includes 120V equipment on the same UPS, review the TDU-3500RTL620 as a companion unit — it provides L5-20R and 5-15/20R outlets from the same 208V input. For pure 208V loads, the MP2-220N handles the bypass path without any voltage conversion.
Frequently Asked Questions
Q: What UPS models is the MP2-220N compatible with?
A: The MP2-220N is designed for use with Liebert GXT5 208V UPS units that use a NEMA L6-20P input connection. Verify your GXT5 model's input plug and voltage before ordering — GXT5 variants span 120V and 208V configurations, and bypass modules are voltage and connector specific.
Q: What outlets does the MP2-220N provide during bypass?
A: The MP2-220N provides four 208V outlets: (2) NEMA L6-15R and (2) NEMA L6-20R. These carry utility power directly to connected loads when the bypass is engaged, supporting both 15A and 20A 208V devices.
Q: Can the MP2-220N be wall-mounted instead of rack-mounted?
A: Yes. The MP2-220N supports both rack-mount and wall-mount installation. Optional wall-mount brackets (WMBKT2U for black finish, WMBKT2USS for stainless steel) are available separately for non-rack deployments.
Q: Does the MP2-220N support remote monitoring?
A: Remote monitoring of alarm conditions is supported via the IS-RELAY accessory, which provides contact closure output compatible with building management systems and remote monitoring platforms. The IS-RELAY is a separate purchase.
Q: Is the MP2-220N suitable for three-phase or higher-capacity 208V bypass applications?
A: No. The MP2-220N is a single-phase 208V bypass rated for NEMA L6-20P (20A) input. For higher-capacity or three-phase bypass requirements, consult the broader Vertiv MicroPOD lineup for appropriate alternatives.
The MP2-220N is the specific bypass module you reach for when you have a Liebert GXT5 on a 208V L6-20P circuit and can't afford a full shutdown to service the UPS. The outlet mix — (2) L6-15R and (2) L6-20R — matters in practice: most 208V rack deployments run a mix of PDU branches and direct-connected servers, and having both 15A and 20A 208V receptacles on the bypass path means you're not scrambling for adapters during a maintenance window.
Technical Highlights:
- NEMA L6-20P Input: Hard-matched to 208V/20A single-phase distribution — no step-down or rewiring needed if your panel already feeds L6-20 circuits to your UPS row.
- Four 208V Bypass Outlets: (2) L6-15R + (2) L6-20R provides enough coverage for the typical GXT5 load complement without stranding 15A-only devices during the bypass window.
- 3U Rack Integration: The 3U chassis fits flush in a standard 19-inch cabinet alongside the GXT5, keeping bypass hardware co-located — no remote distribution panel required for a clean maintenance path.
Deployment Considerations:
- Confirm your GXT5 variant uses the L6-20P input connector before ordering — Vertiv's GXT5 family spans both 120V and 208V input configurations, and the wrong bypass module won't mate physically or electrically.
- Remote monitoring via contact closure requires the separate IS-RELAY accessory — the MP2-220N itself has no built-in network interface or SNMP capability.
This unit fits cleanly in edge data rooms, telecom closets, and healthcare IT equipment spaces running 208V single-phase infrastructure where the GXT5 is the primary UPS and zero-downtime maintenance is a site requirement.
