Dell

Dell KY091 PowerEdge R610 502W Hot-Swap PSU

Name: Dell KY091 PowerEdge R610 502W Hot-Swap PSU
Brand: Dell
SKU: KY091

502W

Dell KY091 502W hot-swap PSU delivers redundant, efficient power for PowerEdge R610 servers without downtime.

$26.99*

✓ In Stock on Amazon.com

View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Dell KY091 is a 502W hot-swappable power supply unit built specifically for the Dell PowerEdge R610 rack server and compatible PowerVault NX3600/NX3610 storage platforms. As a genuine Dell Energy Smart PSU, it integrates fully with the server's baseboard management controller (iDRAC), providing real-time power consumption monitoring, efficiency reporting, and automatic failover alerts. The auto-ranging 100–240V AC input eliminates the need for manual voltage selection, making it suitable for deployment in datacenters and offices across different power standards.

Hot-swap design is the key operational advantage of this unit. In a redundant power configuration — the standard setup for R610 servers — a failed PSU can be physically removed and replaced while the server continues running on the remaining supply, eliminating unplanned downtime. The +12V rail delivers up to 57A (502W maximum), which comfortably supports typical R610 workloads including dual processors, moderate memory populations, and standard drive configurations. For organizations maintaining legacy R610 infrastructure, the KY091 remains an essential spare part for preserving uptime and power redundancy.

Key Features

Product: Genuine Dell Energy Smart Power Supply Unit.

Input:100-240V / 10 A 50-60 Hz

Output: +12Vsb / 2.75 A / +12Vsb / 57 A (502W Max.)

Compatibility: PowerEdge R610 Servers.

Specifications

Part Number

KY091

Power Output

502W Maximum

Input Voltage

100–240V AC, 50–60 Hz

Input Current

10A

+12V Rail Output

57A

+12Vsb Output

2.75A

Form Factor

Hot-Swappable

Compatibility

Dell PowerEdge R610, PowerVault NX3600/NX3610

Pros & Cons

👍 Pros

Hot-swap capability allows replacement without server downtime when used in a redundant pair
Auto-ranging 100–240V input works with power infrastructure worldwide
502W output provides sufficient headroom for typical R610 server configurations
Genuine Dell part ensures proper fit, firmware compatibility, and iDRAC power monitoring

👎 Cons

Only compatible with PowerEdge R610 and PowerVault NX3600/NX3610 — not interchangeable with other Dell server models
502W capacity may be insufficient for heavily loaded R610 configurations with multiple high-power drives and add-in cards
Availability as a current-production part is limited since the R610 platform is several generations old
Fan noise from the integrated cooling can be noticeable in non-datacenter environments

Frequently Asked Questions

Can I hot-swap this PSU without shutting down my PowerEdge R610?

Yes. The KY091 is designed for hot-swap operation, so you can remove and replace it while the server is running, provided a second redundant PSU is installed and functioning.

What servers and storage systems is the KY091 compatible with?

It is compatible with Dell PowerEdge R610 servers as well as Dell PowerVault NX3600 and NX3610 storage systems.

Does this PSU automatically adjust to different input voltages?

Yes. It accepts 100–240V AC input at 50–60 Hz, so it works with standard power outlets worldwide without a voltage selector switch.

What is the maximum power output on the 12V rail?

The KY091 delivers up to 57A on the +12V rail, providing a maximum output of 502W.

Is this a new or refurbished unit?

This is a genuine Dell Energy Smart power supply. Listings may vary between new and renewed units, so verify the condition with the seller before purchasing.