Shopping for industrial power supplies and transformers? The DIN rail power supply is often the first thing to pin down. For a 24VDC system, the key choices are output current and budget, and these four listings show how different those tradeoffs can be.
Quick Take
For a 24VDC DIN rail control system, these four listings cover the practical range: a 5A budget unit, a 5A new-condition unit, a 10A unit priced at the top, and a 20A unit that offers more current than the 10A model for less money. Which one you pick depends on the current you need and the condition you are comfortable with. If you already have a SolaHD Emerson model number in mind, the SDN 10-24-100P is the only one that matches; if you want the most current for the dollar, the SDR-480-24 is the one to beat.
Listed Price Comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| SolaHD Emerson SDN 10-24-100P | USD 303.96 | |
| Mean Well SDR-480-24 | USD 85.00 | |
| Mean Well EDR-120-24 | USD 25.00 | |
| NDR-120-24 | USD 44.99 |
Decision Matrix
- SolaHD Emerson SDN 10-24-100P: 10A output, 240W, 1-minute backup time, new open-box condition.
- Mean Well SDR-480-24: 20A output, 480W, 1.5-minute backup time, enclosed construction, new open-box condition.
- Mean Well EDR-120-24: 5A output, 120W, 100-240VAC input, new open-box condition.
- NDR-120-24: 5A output, 5A inrush rating, new condition, 24V.
Product Notes
SolaHD Emerson SDN 10-24-100P
The SolaHD Emerson SDN 10-24-100P sits at the top of the price range at USD 303.96. Its 10A output and 240W rating make it the only listing in this set with a 10A capability, and the attributes include a 1-minute backup time and a 10A inrush current rating. The condition is listed as new open-box, and the country of origin is Canada. Consider it when your panel already specifies a SolaHD Emerson SDN model. The tradeoff is the price: it is the most expensive of the four, and the Mean Well SDR-480-24 offers 20A for less than a third of the cost.
Mean Well SDR-480-24
The Mean Well SDR-480-24 is the highest-current option at USD 85.00, delivering 24VDC at 20A with 480W. It has the longest backup time listed at 1.5 minutes, uses enclosed construction, and includes a 20A inrush current rating. The condition is new open-box, and the description says it is new old inventory without the original box. If you need to power a large control system, this is the one that gives you the most headroom for the money. The main drawback is the 20A inrush current, which is higher than the 5A inrush on the NDR-120-24, so it is a heavier starting load on your supply circuit.
Mean Well EDR-120-24
At USD 25.00, the Mean Well EDR-120-24 is the most affordable listing here. It provides 24VDC at 5A with a nominal power of 120W and accepts 100-240VAC input, all in new open-box condition. Opt for this if a 5A feed covers your needs and you want to spend the least. The downside is its 5A output, which is the lowest current in the group and won't handle loads that need 10A or 20A. For a small control circuit, the 5A output is usually enough, and the price makes it an easy entry point.
NDR-120-24
The NDR-120-24 is listed at USD 44.99 and stands out as the only unit with a condition of simply 'new' rather than new open-box. It outputs 24VDC at 5A, lists a 5A inrush current rating, and shows the model number NDR-120-24. The listing also includes a blue color and a China country of origin. Choose it when you want a new-condition DIN rail supply and a 5A feed is sufficient. The limitation is its output current: it matches the EDR-120-24 but is far below the 10A and 20A ratings of the other two options, so it is not suitable for high-current equipment.
Final Recommendation by Use Case
For a light 5A load on the tightest budget, the Mean Well EDR-120-24 is the clear pick. If you need 5A and prefer a new-condition listing with a higher price to match, the NDR-120-24 is the alternative. For a 10A requirement and a specific SolaHD Emerson model, the SDN 10-24-100P is the only option. And if you have a heavier control system that can use 20A, the Mean Well SDR-480-24 gives you the most current for the money.
