D750E-S1: Dell 750-Watts Redundant Power Supply For PowerEdge R520
MPN: D750E-S1|By: Dell

Starting from
$55
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
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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
This is the Dell 750-Watts redundant power Supply for PowerEdge R520, order code D750E-S1. The input side has to suit the rack: voltage, connector and whether the circuit can carry another unit at all. Tell us what the PDU presents and we will confirm the variant.
Quotes are itemised down to the accessories, so nothing that is needed to make the part work is left off and discovered later.
Specifications
General
- Manufacturer part number
- D750E-S1
- Product Type
- Power Supplies
- Manufacturer
- Dell
Technical specifications
- Power Rating
- 750W
- Redundancy
- Redundant
Compatibility & compliance
- Compatible Platform
- PowerEdge R520
The table below is what the power supply is documented as, not what we have inferred from the part number. If the figure you need is missing, ask and we will source it from the manufacturer.
Where the Dell D750E-S1 is deployed
- Sourcing D750E-S1 against a build sheet that names it explicitly
- Holding a matched spare for a production chassis
- Re-rating power after adding accelerators or drives
Who this part is for
- Teams re-rating power after adding GPUs or a full drive complement
- MSPs holding a matched PSU spare per chassis family
- Engineers adding a second supply to a chassis shipped with one
What you get ordering this from us
Ordered by part number
D750E-S1 is what is quoted and D750E-S1 is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Matched to the installed unit
Send the part number already in the chassis and we supply its pair, including the efficiency grade that stops the mismatch alert.
Questions buyers ask about this part
Is D750E-S1 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 D750E-S1 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. We quote against a purchase order and hold the price for the quote period, with tiered rates at quantity. Net terms are available once the account is approved.
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 |
| HPE 500W Flex Slot Platinum Hot-Plug Power Supply for ProLiant Servers | HPE | Efficiency: 80 PLUS Platinum | In Stock | $190 |
| 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 |
Browse all Power Supplies or everything we stock from Dell.
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.
