Vertiv MP2-130P 2U Micropod Maintenance Bypass for Liebert PSI5 120V UPS
Overview
The Vertiv MP2-130P is a 2U rack-mounted maintenance bypass module designed specifically for the Liebert PSI5-3000RT120 UPS. When your power protection strategy demands zero-downtime UPS servicing — whether for firmware updates, hardware replacement, or scheduled maintenance — the MP2-130P lets you safely isolate the UPS from the circuit without dropping power to the connected load. That capability is the core value proposition here: planned maintenance becomes a non-event for the equipment downstream.
The MP2-130P (often searched as MP2 130P) accepts a NEMA L5-30P input from the facility feed and presents six output receptacles — four NEMA 5-15R and two NEMA L5-20R — directly to the load. This outlet mix is the distinguishing characteristic of the -130P variant within the PSI5-3000RT120 bypass family; if your load requires different output configurations, the MP2-130C and MP2-130E offer alternative outlet arrangements for the same UPS platform.
Key Features
- Dedicated PSI5-3000RT120 Compatibility: The MP2-130P is engineered specifically for the Liebert PSI5-3000RT120 — not a universal bypass. That tight pairing means the wiring interface, ratings, and switching sequence are validated for that UPS model. Don't attempt to use this bypass with PSI5 models up to 1500VA or the PSI5-2200RT120; separate bypass SKUs exist for those platforms.
- NEMA L5-30P Input at 120V / 24A Maximum: The L5-30P twist-lock input handles up to 24A continuous draw at 120V nominal, matching the service capacity of the PSI5-3000RT120 circuit. At 24A maximum, you're working within an 80% loading recommendation of a 30A branch circuit — size your panel circuit accordingly before installation.
- Six-Outlet Configuration (4× NEMA 5-15R + 2× NEMA L5-20R): The output mix supports both standard 15A straight-blade loads and higher-draw 20A twist-lock devices on the same bypass unit. This matters when your rack contains a combination of standard 1U servers and higher-draw storage arrays or networking gear that land on L5-20R receptacles.
- 2U Rack Form Factor: At 432mm wide and 89mm deep and tall, the MP2-130P fits a standard 19-inch rack rail in 2U. The compact depth — just 89mm — means it won't conflict with cable management arms or dense rear-of-rack wiring in shallow-depth racks common in IDF closets and co-location environments.
- 50–60 Hz Input Frequency Tolerance: The MP2-130P accepts either 50Hz or 60Hz facility power, which matters for data center operators managing international equipment or facilities with mixed power infrastructure. In North American 60Hz environments this is a non-issue, but it removes a variable if the bypass ever moves to a different facility.
- UL1778, c-UL, and ISTA Procedure 1A Listed: UL1778 is the UPS equipment standard — listing under this standard confirms the bypass has been independently evaluated for electrical safety in its intended role. The c-UL mark extends that recognition to Canadian installations. ISTA 1A listing validates the unit survived standardized transit shock and vibration testing, relevant if the unit ships to a remote site or gets relocated between racks.
- 0–95% Non-Condensing Operating Humidity, 32–104°F Operating Range: The MP2-130P is rated for standard data center and wiring closet environments. The 104°F upper limit is adequate for most air-conditioned spaces, but it's not rated for hot-aisle containment environments where ambient temperatures regularly exceed that threshold without active cooling management.
Integration and Compatibility
Within the power and UPS category, bypass modules are model-specific — the Vertiv Micropod product line includes separate SKUs for each supported UPS platform and input configuration. The MP2-130P pairs exclusively with the PSI5-3000RT120. For the PSI5-2200RT120, Vertiv offers the MP2-120 series; for PSI5 models up to 1500VA, the MP2-115 series applies. Consult the Vertiv product line to confirm the correct bypass SKU before ordering — cross-model bypass mismatches create wiring incompatibilities that are not field-correctable without replacement hardware.
Installation requires a 30A branch circuit terminated to an L5-30P receptacle. The bypass connects between the facility outlet and the PSI5-3000RT120 input, with load outlets feeding from the bypass unit rather than directly from the UPS. This topology is standard for maintenance bypass switches in rack UPS deployments and should be reflected in your site's single-line power diagram before commissioning.
For broader rack power planning — including how bypass modules interact with PDU branch circuit sizing and UPS runtime calculations — the UPS selection and sizing guide covers the topology considerations that affect bypass module selection alongside UPS capacity planning. Pair the MP2-130P with an appropriately rated rack PDU downstream if your load distribution requires metered or switched outlet control beyond what the bypass receptacles provide.
Frequently Asked Questions
Q: Which UPS models is the MP2-130P compatible with?
A: The MP2-130P is compatible exclusively with the Liebert PSI5-3000RT120. It is not compatible with PSI5 models up to 1500VA or the PSI5-2200RT120 — those platforms have dedicated bypass SKUs within the MP2 series.
Q: What is the input plug type and maximum current rating for the MP2-130P?
A: The MP2-130P uses a NEMA L5-30P twist-lock input plug and is rated for a maximum of 24A at 120V nominal. This requires a 30A branch circuit at the facility panel.
Q: What outlet types does the MP2-130P provide?
A: The MP2-130P provides six total output receptacles: four NEMA 5-15R straight-blade outlets and two NEMA L5-20R twist-lock outlets. This distinguishes it from the MP2-130C (eight NEMA 5-15/20R) and MP2-130E (two NEMA 5-15/20R, four NEMA 5-15R, one NEMA L5-30R) variants for the same UPS platform.
Q: What certifications does the MP2-130P carry?
A: The MP2-130P is UL1778 listed, c-UL listed (for Canadian installations), and ISTA Procedure 1A listed for transit testing.
Q: What are the environmental operating limits for the MP2-130P?
A: The MP2-130P operates between 32°F and 104°F (0°C and 40°C) at 0–95% relative humidity (non-condensing). Storage is rated to -20°C on the low end and 60°C on the high end.
Q: How much rack space does the MP2-130P require?
A: The MP2-130P occupies 2U of rack space. Physical dimensions are 432mm wide × 89mm deep × 89mm tall, fitting a standard 19-inch rack enclosure.
The MP2-130P is the bypass module I reach for when a PSI5-3000RT120 deployment needs a maintenance path that doesn't require scheduling a power outage. The L5-30P input at 24A maximum is the spec that drives the branch circuit conversation — you need a dedicated 30A circuit terminated correctly before this unit goes in the rack, and that conversation needs to happen with the facilities team before the equipment arrives on site, not after.
Technical Highlights:
- Six-Outlet Mixed Output (4× 5-15R + 2× L5-20R): The -130P variant's outlet mix is the right pick when your PSI5-3000RT120 rack load combines standard 15A servers with 20A twist-lock devices — the two L5-20R receptacles handle those higher-draw loads without adapters or pigtails that create audit complications.
- 2U at 89mm Depth: The shallow 89mm chassis depth is meaningful in half-depth or space-constrained IDF enclosures where a deeper bypass module would conflict with rear cable management. Confirm rack depth before ordering if the installation is in a wall-mount or shallow two-post open frame.
- UL1778 + c-UL Listing: Both marks matter if the installation spans US and Canadian facilities, or if the AHJ (authority having jurisdiction) requires UL listing documentation for the bypass as a standalone device — which some jurisdictions do, separate from the UPS listing itself.
Deployment Considerations:
- The MP2-130P is PSI5-3000RT120 specific — verify the exact UPS model number on the nameplate before ordering. The PSI5-3000RT120 and PSI5-2200RT120 look similar in a rack but require different bypass SKUs; a mismatch means the unit goes back.
- Operating humidity tops out at 95% non-condensing, and the temperature ceiling is 104°F — adequate for air-conditioned server rooms, but flag this if the unit is going into a manufacturing floor enclosure or telecom hut without active cooling, where ambient conditions can spike above that threshold.
This bypass is the right specification for IT and facilities teams managing PSI5-3000RT120 deployments in enterprise data centers or co-location racks where planned UPS maintenance windows need to be invisible to the connected load — specifically where the L5-20R twist-lock outlet requirement rules out the MP2-130C's all-straight-blade output configuration.
