865403-B21: HPE 500-Watts Redundant Power Supply For ProLiant DL360
MPN: 865403-B21|By: HPE

Starting from
$110
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
Prefer your own inbox? Email us about this part
Bulk order? Request volume pricing
Authorized & warrantied
Sourced through authorized distribution, with the full manufacturer warranty.
Compatibility checked
Validated against your server platform before dispatch.
Delivery & lead time
Confirmed with your quote, including expedited freight where available.
Business & public sector
POs, net terms and volume pricing for qualified organizations, government and edu.
Product overview
865403-B21 is an HPE 500-Watts redundant power Supply for ProLiant DL360. Mixing efficiency grades in a redundant pair is the common mistake: the pair runs, then throws a mismatch alert on every boot. Give us the part number already fitted and we will supply its match.
We return an itemised quote within 48 business hours, and we say plainly when a part is constrained rather than quoting a date we cannot hold.
Specifications
General
- Manufacturer part number
- 865403-B21
- Product Type
- Power Supplies
- Manufacturer
- HPE
Technical specifications
- Power Rating
- 500W
- Redundancy
- Redundant
Compatibility & compliance
- Compatible Platform
- ProLiant DL360
These are the 5 facts we can state about 865403-B21 without inferring anything. Compatibility beyond this is confirmed per platform, on request, before you order.
Where the HPE 865403-B21 is deployed
- Swapping out a failed power supply for 865403-B21 under change control
- Adding a second supply to a chassis shipped with one
- Restoring redundancy after one supply in a pair has failed
Who this part is for
- Engineers adding a second supply to a chassis shipped with one
- IT teams restoring redundancy after one supply in a pair has failed
- MSPs holding a matched PSU spare per chassis family
What you get ordering this from us
Ordered by part number
The order is placed against 865403-B21, not against a description of it, so there is no room for a substitution you did not agree to.
Answered by a human
A quote comes back with the reasoning attached, including the cases where we think you should buy something else.
No substitutions without asking
If we cannot supply the exact code we tell you what we can supply and why, rather than shipping an equivalent and letting you find out.
Questions buyers ask about this part
Is 865403-B21 genuine and is the warranty intact?
Yes. Supplied new and unopened, so the manufacturer warranty and firmware update path stay supported. No grey-market stock and no refurbished units sold as new.
Will 865403-B21 work in my server?
Send the server model and the part number of the supply already fitted. In a redundant pair both units have to match on wattage and efficiency grade, or the chassis alerts on every boot.
Do you accept purchase orders and quote at volume?
Yes. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.
Compare other Power Supplies we stock
| Model | Brand | Key spec | Availability | From |
|---|---|---|---|---|
| Dell 495W Hot-Plug Redundant Power Supply for PowerEdge Rack Servers | Dell Technologies | Efficiency: 80 PLUS Platinum | In Stock | $175 |
| Supermicro 1200W Redundant Titanium Hot-Swap Power Supply Module | Supermicro | Efficiency: 80 PLUS Titanium | In Stock | $415 |
| Lenovo 750W 80 PLUS Platinum Hot-Plug Server Power Supply | Lenovo | Wattage: 750W | In Stock | $165 |
| IBM 550W 80 PLUS Platinum Hot-Plug Server Power Supply | IBM | Wattage: 550W | In Stock | $100 |
| HP 460W 80 PLUS Gold Hot-Plug Server Power Supply | HP | Wattage: 460W | In Stock | $60 |
| Delta Electronics 800W 80 PLUS Titanium Hot-Plug Server Power Supply | Delta Electronics | Wattage: 800W | In Stock | $125 |
Browse all Power Supplies or everything we stock from HPE.
Specifying a system, not just the part?
An accelerated node draws far more than a general-purpose server, so power is sized with the build rather than assumed from the chassis.
