Upgraded S400-24 17A 24V Creality Ender 3 V1 Power Supply (original size) Exact Replacement OEM
These are upgraded and produce 17A while the original version only produces 15A. If you are powering any accessories from your Ender 3 power supply you might need the extra current.
This 24V power supply is from the same manufacturer that supplied Creality 3D with their original Ender 3 power supplies. Now Creality is using the thin Meanwell power supply on the Ender 3 Pro so these will be increasingly hard to find. You should always keep a spare power supply.