Choosing a DIN rail power supply for an industrial cabinet comes down to three questions: what input voltage is available, what DC voltage your devices need, and how much current the load draws. The four units here cover a useful range of answers across 480VAC, 24VDC, 48VDC, and a small adjustable 12-15V line. With listed prices from $22.99 to $225, the choice matters more than grabbing any DIN rail unit off the shelf.
Quick take
- For a 480VAC input and 24VDC output, the PULS QT20.241 is the unit to compare first.
- For high-power 48V loads, the MEAN WELL SDR-240-48 offers 240W at 48V and 5A.
- For adjustable 12-15V circuits, the PULS ML50.102 covers 50W at up to 4.2A.
- For basic 24V at 120W with the lowest listed price, the 120W 24VDC DIN rail supply is the entry point.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| New Puls QT20.241 DIN Rail Power Supply 480VAC Input 24VDC Output | USD 225.00 | |
| PULS ML50.102 DIN Rail Power Supply 12-15V DC 4.2A 50W Industrial PSU | USD 61.22 | |
| MEAN WELL SDR-240-48 240W 48V 5A AC to DC DIN-Rail Power Supply 100-240v input | USD 52.00 | |
| 120W 24VDC 5Amp Industrial DIN Rail Power Supply Single Output 1.7 x 4.8 x 5.1in | USD 22.99 |
The high-end unit and the low-end unit are separated by roughly $202, while the middle two are less than $10 apart.
Decision matrix
| Need | Listed product | Why it fits |
|---|---|---|
| 480VAC input, 24VDC output | New Puls QT20.241 | Accepts 480VAC input and outputs 24VDC |
| Adjustable 12-15V DC | PULS ML50.102 | Outputs adjustable 12-15V DC at up to 4.2A; 50W |
| High-power 48V DC | MEAN WELL SDR-240-48 | 240W, 48V, 5A, slim metal housing |
| Basic 24V at 120W | 120W 24VDC Industrial DIN Rail Power Supply | 24V, 5A, 120W single output |
Product notes
New Puls QT20.241 DIN Rail Power Supply 480VAC Input 24VDC Output
The QT20.241 is the only unit here built around a 480VAC input, so it earns its place in cabinets fed by 480VAC distribution. It delivers 24VDC output in a PULS DIN rail form factor and is listed as new open box at $225. That open-box condition is the trade-off: you get the high-voltage input capability, but the packaging is not sealed. If your line voltage is lower, the MEAN WELL 48V unit or the 120W 24VDC supply will cover more common voltages for less money. Choose the QT20.241 when the incoming feed really is 480VAC and you want a matched PULS supply.
PULS ML50.102 DIN Rail Power Supply 12-15V DC 4.2A 50W Industrial PSU
The ML50.102 is the adjustable-voltage option. It provides 12-15VDC at up to 4.2A, with a 50W rating, and is sold as new for $61.22. That makes it a sensible match for control cabinets, factory automation, instrumentation, and sensitive electronics that need a stable 12V or 15V rail. The trade-off is capacity: at 50W it is not the unit for high-current loads or high-power output. The MEAN WELL 48V unit costs about $9 less and delivers much more total power, but it cannot give you a 12-15V adjustable rail. Use the ML50.102 when voltage adjustability matters more than total wattage.
MEAN WELL SDR-240-48 240W 48V 5A AC to DC DIN-Rail Power Supply 100-240v input
For 48V loads, the SDR-240-48 is straightforward: 240W, 48V, 5A, in a slim 63mm metal DIN rail enclosure, listed at $52. The output voltage is adjustable from 48V to 55V and current is adjustable up to 5A, with active PFC and efficiency up to 94%. That efficiency makes it well suited to continuous industrial use where heat matters. Its limitation is the 48V output: if your controls need 24V, the 24V units on this list are a more direct fit. At $52, it is the highest total power on this list, but only install it when the DC bus is 48V.
120W 24VDC 5Amp Industrial DIN Rail Power Supply Single Output 1.7 x 4.8 x 5.1in
The least expensive listed supply, at $22.99, is the 120W 24VDC DIN rail unit. It provides 24V at 5A, with input current of 2.6A max, and efficiency rated at least 85%. The compact 1.7 x 4.8 x 5.1in single-output package is enough for many small cabinets and control panels. The clear trade-off is efficiency: at 85%, it generates more heat than the 94% efficient MEAN WELL, and its single 24V output is best suited to 24V-only systems. If your job is simple, your space is tight, and the lowest listed price matters, this supply keeps the spend down. For 48V or adjustable-voltage loads, the MEAN WELL and ML50.102 are the better-defined matches.
Final recommendation by use case
- 480VAC input needed: New Puls QT20.241.
- High-power 48V DC: MEAN WELL SDR-240-48.
- Adjustable 12-15V DC: PULS ML50.102.
- Basic 24V 120W with the lowest listed price: the 120W 24VDC DIN rail supply.
