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Tall black 21U rack tower UPS hardwired 208 to 240V

Eaton

Eaton 9PXM12S12K UPS 12 kVA scalable to 20 kVA 208-240V 21U

SKU CH-WKX2-G857D MPN 9PXM12S12K

Scalable 12 kVA to 20 kVA UPS with hardwired 208-240 V input and output in a 21U rack/tower form factor

  • AC input voltage208 V AC - 240 V AC
  • Power outletsHardwired
  • Scalable capacity from 12 kVA to 20 kVA N+1
  • Hardwired input and output for permanent installation
  • Operates on 208-240 V AC three-phase power
  • TAA and FCC compliant for regulated environments
  • 21U rack/tower form factor fits standard cabinets

Scalable 12 kVA UPS for rack or tower deployment

The Eaton 9PXM12S12K delivers 12 kVA of double-conversion protection and scales to 20 kVA with N+1 redundancy. It accepts hardwired 208-240 V AC input and provides hardwired output for critical IT and facility loads. The 21U form factor fits standard racks or stands as a tower.

Hardwired connections and compliance marks

Hardwired input and output eliminate plug limitations and support permanent installation in electrical rooms. The unit carries TAA and FCC compliance for regulated procurement and electromagnetic compatibility. First listed by the manufacturer in 2018, it remains a current production model.

Capacity headroom and physical footprint

At 12 kVA the system handles typical server-row loads; adding modules extends capacity to 20 kVA while maintaining N+1 redundancy. The chassis measures 34.5 in deep, 36.5 in high and 17.5 in wide, weighing 482 lb, so floor loading and rack space must be planned before deployment.

How it compares

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

Price $20,648.99
Pricier than about 94% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameEATON
Model name9PXM12S12K
Power
AC input voltage208 V AC - 240 V AC
Power outletsHardwired
Size & build
Shipping weight218.63 kg
Package size927 × 927 × 445 mm

Questions about this item

How often will the internal batteries in the 9PXM12S12K need replacement?

Battery life depends on temperature and discharge cycles; Eaton recommends checking them annually and planning replacement every three to five years under typical conditions.

What limits continuous output before the 12 kVA unit reaches its thermal ceiling?

The hardwired 208-240 V output is rated for 12 kVA; sustained loads at that level are supported within the specified operating temperature range.

How much heat does the 21U rack tower produce when running at full load all day?

At 12 kVA the unit dissipates heat proportionally to its efficiency rating; forced-air cooling handles the thermal load in a standard rack environment.

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