Choosing a DIN rail power supply for an industrial control panel comes down to matching output voltage and current to the devices you need to run. The four options here span $31.64 to $85 and cover 24V and 36V DC outputs, from compact 120W supplies to a 480W unit for heavier loads. You will also find new, used, and open-box condition, so the immediate decision usually comes down to voltage class, power headroom, and whether you are willing to consider a used unit.
Quick take
If you want a new 24V 5A supply and the lowest listed price in this group, the Mean Well NDR-120-24 at $31.64 is the easiest call. Need more output for a larger cabinet? The Mean Well SDR-480-24 at $85 delivers 24V at 20A with a 1.5-minute backup time. The PULS QS20.361 at $49 is the only 36V unit among these four and is listed as used. The other NDR-120-24 option at $44.99 is also new and provides the same 24V 5A output, but at a higher listed price.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| PULS QS20.361 36V DC | USD 49.00 | |
| Mean Well NDR-120-24 24V 5A | USD 31.64 | |
| Mean Well SDR-480-24 24V 20A | USD 85.00 | |
| NDR-120-24 Industrial DIN Rail Power Supply | USD 44.99 |
Decision at a glance
| Product | Output | Condition | Notable Specs | Best For |
|---|---|---|---|---|
| PULS QS20.361 | 36V DC | Used | 36V nominal and output voltage | 36V control components |
| Mean Well NDR-120-24 | 24V DC 5A | New | 120W, screw terminal block | Low-cost new 24V supply |
| Mean Well SDR-480-24 | 24V DC 20A | New - Open box | 480W, backup time 1.5 min | Higher-power 24V rails |
| NDR-120-24 Industrial DIN Rail Power Supply | 24V DC 5A | New | DIN rail mount, indoor/outdoor | Alternative new 24V 5A unit |
PULS QS20.361 DIN Rail Power Supply 36V DC Industrial PSU
If your control circuit runs on 36V DC, this PULS unit at $49 is the only supply here with a 36V nominal and output voltage rating. It is listed as used, so expect possible light wear or scuff marks from previous service. The description also notes that only what is pictured is included. The upside is a dedicated 36V rail supply from an industrial brand. The limitation is condition: you are buying a used unit, and the lack of accessories beyond the pictured item means you should make sure the unit alone covers your installation.
Mean Well NDR-120-24 AC/DC Single Output Industrial DIN Rail Power Supply
At $31.64, this new Mean Well supply is the lowest listed price in the group. It provides 24V DC at 5A and 120W, with a screw terminal block for wiring. The description lists protections for short circuit, over voltage, overload, and over temperature, along with free-air convection cooling. The key decision point is the low price for a new 24V 5A DIN rail unit. The limitation is the 120W output: if you need more than 5A at 24V, you will need to move up to the 480W supply.
Mean Well SDR-480-24 24V 20A 480W AC to DC DIN-Rail Power Supply
The largest supply here, at $85, this Mean Well unit provides 24V at 20A and 480W. It also lists a 1.5-minute backup time, which is a useful feature if you need temporary ride-through during a power blip. Condition is New - Open box and the description says no original box and new old inventory. The limitation is that it is the highest listed price in the comparison and is not factory-sealed. If your cabinet needs 480W of 24V headroom, this is the unit; for smaller circuits, it is more than you need.
NEW NDR-120-24 Industrial DIN Rail Power Supply output 24 Volt 5 Amp 240 Watt
This new DIN rail supply is listed at $44.99 and provides 24V at 5A with a DIN rail mount. The attributes point to indoor/outdoor installation and a blue color. If you prefer a new unit with those characteristics and do not mind paying more than the $31.64 option, this one is a reasonable alternative. The main limitation is the listed price: it is higher than the other NDR-120-24 in this group, and the output specs are similar.
Final recommendation by use case
For a new 24V 5A supply and the lowest listed price, choose the Mean Well NDR-120-24 at $31.64. If you need a 480W 24V rail with a 1.5-minute backup time, the Mean Well SDR-480-24 at $85 is the clear choice. If your system is 36V-based, the PULS QS20.361 at $49 is the only 36V unit in this set. The second NDR-120-24 at $44.99 works when you want a new 24V 5A DIN rail supply with indoor/outdoor attributes, but it carries a higher listed price than the similar Mean Well.
