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Tall black rack-mount UPS cabinet 21U with multiple NEMA outlets on rear panel

Eaton

Eaton 9PXM12S20K-PD UPS 20 kVA 21U 208-240V

SKU CH-86Y6-DNM2Z MPN 9PXM12S20K-PD

Scalable 20 kVA rack/tower UPS with hardwired input and multiple NEMA outlets for 208-240 V environments

  • AC input voltage208 V AC - 240 V AC
  • Power outlets2 x NEMA L14-30R 2 x NEMA L6-20R 2 x NEMA L6-30R 8 x NEMA 5-
  • Scalable 20 kVA capacity with N+1 redundancy
  • Hardwired 208-240 V input suits data-centre power
  • Eight NEMA 5-20R plus six locking outlets
  • 21U rack/tower form factor fits standard cabinets
  • FCC, TAA and ICES-003 compliant for regulated sites

Scalable 20 kVA UPS

The Eaton 9PXM12S20K-PD is a 20 kVA battery backup that scales to 20 kVA in an N+1 redundant configuration. It accepts hardwired 208-240 V AC input and fits a 21U rack or tower footprint. The unit targets data-centre and critical-infrastructure operators who need high-density power protection with room for growth.

Thermals noise and power draw

The 690 lb chassis uses forced-air cooling across a 34.5 in depth and 36.5 in height to manage heat at full load. Fan speed ramps with load percentage, so acoustic output rises only when the UPS is delivering near-rated power. Double-conversion topology keeps input current clean while the battery system carries the load during outages.

Outlet mix and compliance

Eight NEMA 5-20R, two L6-20R, two L6-30R and two L14-30R receptacles let you connect servers, networking gear and peripheral strips without adapter cables. FCC, ICES-003 and TAA markings simplify deployment in regulated environments. The hardwired input requires professional installation, so the unit is not suited for plug-and-play desktop use.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $27,704.99
Pricier than about 96% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameEATON
Model name9PXM12S20K-PD
Power
AC input voltage208 V AC - 240 V AC
Power outlets2 x NEMA L14-30R
2 x NEMA L6-20R
2 x NEMA L6-30R
8 x NEMA 5-20R
Size & build
Shipping weight312.98 kg
Package size927 × 927 × 445 mm

Questions about this item

How do I hardwire the 208-240 V AC input on this 21U rack/tower UPS, and what step is often missed?

Have a qualified electrician connect the supply to the unit's hardwired input terminals; the step often missed is verifying the branch-circuit breaker matches the 20 kVA rating before energising.

Which user-replaceable battery modules does the 9PXM12S20K-PD use, and how many are required?

It uses Eaton 9PXM battery modules; the scalable 12-slot frame requires up to 12 modules for full 20 kVA N+1 redundancy.

At 20 kVA load, what is the first limit reached — runtime, thermal, or outlet current?

The outlet current limits appear first: each L6-30R is rated 30 A, each L6-20R 20 A, and each 5-20R 20 A, so total connected load must stay within those per-receptacle ratings.

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