Finding a 24 VDC power supply that mounts on a DIN rail is a frequent requirement in control panels and industrial automation. You need a unit that delivers enough current for your field devices, fits the standard mounting rail, and doesn't blow the project budget. When a used supply appears at a price that fits the project budget, the real question is whether its condition and performance match your expectations.
Quick Verdict
If you need a 24 VDC DIN rail supply and can tolerate cosmetic wear, the SOLA SDN 2.5-20 RED is a concrete candidate at USD 7.50. It is described as tested and working, and it was pulled from a working environment.
Who It Suits
This unit suits technicians, electricians, and hobbyists working on control panels, small automation systems, or equipment that runs on 24 VDC and needs about 20 amps. The DIN rail mounting style is common in industrial enclosures, so it can drop into a typical control cabinet. It is also a reasonable stopgap for a repair bench or a replacement unit in an existing panel. If appearance is a top priority, the fair condition may be a sticking point.
What Stands Out From the Listed Details
The supply is a Sola/Hevi-Duty SDN 2.5-20 RED. The title lists a 24 VDC output and a 20 amp rating, which gives you a clear sense of its capacity. The unit is described as 100 percent tested and works, and it was removed from a working environment. The cosmetic condition is fair, with scratches and signs of use. For a moderate load in a control circuit, the 24 VDC output and 20 amp capacity fit a standard set of requirements.
Meaningful Trade-Offs
The main trade-off is condition: this used supply will show scratches and signs of cosmetic use. If you require a pristine look, that will be a factor. The unit is reported to be in working order, which is the key functional detail. The asking price is positioned for someone who is willing to accept a used part.
Bottom Line
The reported working status is the strongest sign that this unit can serve in a functional role. It is not a new part, but a reported working status gives it a place in projects where function matters more than cosmetics. If you can accept the used appearance, this unit offers a straightforward way to get a DIN rail supply into your project.
Product Notes
SOLA 24 VDC Power Supply 20 AMP DIN RAIL MOUNT SDN 2.5-20 RED *Fair Cond.* HVD

A concrete reason to choose this unit is its DIN rail mount form factor, which fits standard control panel installation, and the price of USD 7.50. The limitation is the used condition: it is described as fair, with scratches and signs of cosmetic use, so it will not look new.