The Dell 1850W Power Supply Unit (PSU), model D1850E-S0, is a high-capacity, high-efficiency hot-swap server power supply engineered for select Dell PowerEdge enterprise platforms. Identified by Dell part numbers 0TRM9N / TRM9N and equivalent manufacturer models DPS-1850AB A and 9R9PK, this PSU is built to support power-dense compute, GPU, and accelerator workloads.

Designed for mission-critical environments, the Dell 1850W PSU delivers stable power, high efficiency, and redundancy support for modern data centers and high-performance servers.

Key Specifications

• Maximum Power Output: 1850 Watts

• Dell Part Numbers: 0TRM9N, TRM9N

• Model Numbers: D1850E-S0, DPS-1850AB A, 9R9PK

• Input Voltage: 100–240V AC (auto-ranging)

• Input Frequency: 50/60 Hz

• Maximum Input Current: 10A

• DC Output (Operating): +12V / up to 127A (up to 146.83A depending on configuration)

• Standby Output: +12Vsb / 3.0A (up to 3.5A)

Efficiency & Design

• Efficiency Rating: Platinum/Titanium class efficiency

  • 80 Plus Gold minimum rating

  • Higher efficiency achieved at ~50% load

• Form Factor: Proprietary Dell hot-swap server PSU

• Cooling: Integrated high-reliability server cooling design

• Hot-Swappable: Yes, supports live replacement without system downtime

Compatibility

This 1850W PSU is compatible with select Dell PowerEdge enterprise servers, including:

• PowerEdge R840

• PowerEdge R940

• PowerEdge C4130

• PowerEdge C4140

Key Features & Benefits

• High-power output for GPU- and accelerator-dense systems

• Supports redundant PSU configurations for high availability

• Optimized for enterprise and data center workloads

• Reliable power delivery for compute-intensive applications

The Dell D1850E-S0 1850W Power Supply is an ideal replacement or upgrade PSU for supported PowerEdge systems, offering exceptional power efficiency, reliability, and scalability for demanding enterprise environments.