18 kW N+1 Power Shelf

The 18kW power shelf is a 5-slot chassis that accepts true 3-phase input power and provides stable DC output power (1440A at 12.5VDC). The 3-phase-input Power Supply Units (PSUs) automatically phase-balances loads for optimal system design for sizing wires and breakers.

This OCP 21-inch power shelf supports up to 5 high-power, hot-swappable, 4.5 kW PSUs in 4+1 redundant operation.
18 kW N+1 Power Shelf by Lite-On Power System Solutions
"4+1 redundant and hot swappable 4.5kW Power Supply Unit."

Key Features

Supplies power up to 18kW N+1
3 OU (OpenU) Shelf accepts up to 5 hot-swappable 4.5kW Power Supply Units (PSU) for 4+1 redundant operation
21-inch OCP shelf with a height of 3 OU, 5.47 inches (139 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 output loading
Supports 6x C13 outlets for external AC load


Model NumberPF-2183-1L1M | 3 Phase 18 kW Power Shelf
Maximum Output Power18kW
InputThree-phase 380VAC / 400VAC
Input Current Phase Sharing5% at > 20% Load
Output18kW (12.5VDC / 1440A)
CommunicationsRJ45 / PMBus 1.2
Operating Temperature0°C to 50°C
ApprovalsUL60950-1, IEC60950-1 International, GB4943, RoHS
Dimensions (H x W x D)5.47" x 21” x 27.1” (139 mm x 534 mm x 688 mm)
Form Factor3 OpenU (OU), 21-inch Rack Mount
Warranty3 years

Three-Phase Power Shelf System Components

ComponentModel NumberDescription
Power ShelfPF-2183-1L1M3-Phase 18kW Power Shelf chassis includes one Shelf Controller slot and five PSU Module slots
  • Power Module slots (5)
  • Shelf Controller slot (1)
Power Supply UnitPS-2452-1L1M4.5kW Hot-Swappable Power Supply Unit
Battery Backup SystemBP-1442-01X4.4KW 1U Battery Backup Shelf with 4 slots
Battery Backup UnitBM-1112-01X1.1kW 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