22.5 kW N+1 Power Shelf

The Lite-On 22.5kW N+1 Power Shelf, designed for a 21" rack, allows high efficiency at the rack level by accepting 3 phase power into the shelf and distributing single phase power to up to ten 2.5kW Power Supply Units (PSUs).

The 9+1 configuration of 2.5 kW hot-swappable Power Supply Units (PSU) allows for redundancy and optimal up-time.
"9+1 redundant and hot swappable 2.5kW Power Supply Units."

Key Features

Supplies power up to 22.5kW N+1
3U shelf accepts up to 10 hot-swappable 2.5kW Power Supply Units for 9+1 redundant operation
21-inch shelf with a height of 3 OU (OpenU), 5.17 inches (131 mm)
Communication with Li-ion Battery Backup Shelf (BBS)
Real-time PSU and BBS monitoring and control
Remote control PSU On/Off through the optional Shelf Controller
Supports 3 sets of bus bars to deliver DC power to load
Supports 6x C13 outlets for external AC load


Model NumberPF-2223-1L1M | 3 Phase 22.5kW Power Shelf
Maximum Output Power22.5kW
Input3-phase, 5 wire 380 / 400 / 415VAC
Output22.5kW (12.5VDC / 1800A)
CommunicationsCAN, PMBUS1.2
Operating Temperature0°C to 50°C
ApprovalsIEC60950-1 International, GB4943, RoHS
Dimensions (H x W x D)5.12’’ x 21.2’’ x 25.55’’ (131 mm x 528 mm x 649 mm)
Warranty3 Years

Three-Phase Power Shelf System Components

ComponentModel NumberDescription
Power ShelfPF-2223-1L1MThree-Phase 22.5kW Power Shelf chassis includes one Shelf Controller slot and ten PSU Module slots
  • Power Module slots (10)
  • Shelf Controller slot (1)
Power Supply UnitPS-2252-6L1U2.5kW Hot-Swappable Power Supply Unit
Battery Backup SystemBP-1702-01X7KW 1U Battery Backup Shelf with 4 slots
Battery Backup UnitBM-1172-01X1.75kW Battery Backup Unit
Shelf ControllerCM-12CP-010UManages the Power Shelf and Li-ion Battery Backup System (BBS)
Site Management ControllerCP-13EC-010URack management and control
21-inch OCP RackKT-2141-12121-inch Open Frame Rack