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Tall black and silver UPS rack cabinet, 21U, freestanding, hardwired connections visible

Eaton

Eaton 9PXM12AAAAA UPS 4-20 kVA N+1 12 modules 21U hardwired

SKU CH-0286-MQ0XA MPN 9PXM12AAAAA

A 21U rack or tower UPS frame supporting up to 12 hot-swap modules for 4–20 kVA N+1 power protection with hardwired input and output

  • Input line frequency55–65 Hz
  • AC output frequency60 Hz
  • Regulatory approvalsIEC Rated cULus Listed
  • Supports up to 12 power modules for scalable N+1 redundancy
  • Online double-conversion topology delivers clean 60 Hz output from 55–65 Hz input
  • Hardwired 110–240 V input and output voltages suit global installations
  • 21U rack/tower frame fits standard cabinets at 36.5" H × 17.5" W × 34.5" D
  • TAA and FCC compliant, cULus listed, IEC rated for regulated environments

Frame and module capacity

The Eaton 9PXM12AAAAA is a 21U rack-tower frame that accepts up to twelve hot-swappable power modules. Each module adds capacity so the system scales from 4 kVA to 20 kVA with N+1 redundancy built in. Online double-conversion topology delivers continuous, conditioned power to critical IT and facility loads.

Scaling from fixed-capacity UPS

A single-module UPS must be replaced entirely when loads grow; this frame lets you add modules instead. The step is worth it when the site expects phased expansion or needs fault tolerance without a second complete unit. Hardwired input and output suit permanent electrical installations in data rooms or industrial panels.

Hardwired installation and frequency limits

Hardwired connections require qualified electrical work and are not suited for plug-and-play deployments. The unit accepts an input frequency window of 55 to 65 Hz and locks output to 60 Hz, so sites with unstable generator frequency outside that range may need additional conditioning. Rack height options of 14U or 21U constrain cabinet choice.

How it compares

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

Price $6,345.99
Pricier than about 91% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameEATON
Product line9PXM
Model name9PXM12AAAAA
Power
Input line frequency55–65 Hz
AC output frequency60 Hz
Size & build
Shipping weight77.11 kg
Package size1207 × 775 × 610 mm
Environment & compliance
Regulatory approvalsIEC Rated
cULus Listed

Questions about this item

What rack height and weight should I plan for when mounting the 9PXM12AAAAA frame?

The frame occupies 21U of rack space, measures 36.5 in tall, 17.5 in wide, 34.5 in deep and weighs approximately 170 lb, so verify the rack depth and load rating before installation.

How are the power modules inserted, and what is the common mistake?

Slide each hot-swappable module into the front bays until the latch clicks; the step most often missed is failing to seat the latch fully, which leaves the module disconnected from the bus.

When will the internal batteries need replacement?

Eaton rates the internal batteries for three to five years of typical service; plan replacement at the three-year mark or sooner if runtime tests show degradation.

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