When you're shopping for industrial power supplies transformers, the first decision is usually how much input flexibility your control panel actually needs. The Puls QT20.241 and the NDR-120-24 both mount on a DIN rail, but they take different paths. The Puls is a compact unit designed for higher input voltages, while the NDR is a general-purpose supply that takes a different approach.
Quick verdict
If your panel is fed by a high-voltage line and you want a compact supply, the Puls QT20.241 is the one to buy. If you just need a simple supply for a modest control circuit and don't mind a blue housing, the NDR-120-24 is the simpler choice. The QT20.241 is the specialty pick; the NDR-120-24 is the everyday workhorse. Your choice hinges on the line voltage feeding the panel.
At a glance
| Product | Price | Output | Input / Other |
|---|---|---|---|
| Puls QT20.241 | $225.00 | 24V DC | 480VAC input, New - Open box |
| NDR-120-24 | $44.99 | 24V, 5A | Indoor/outdoor, New |
Where each product wins
- Puls QT20.241 wins on input flexibility: it accepts a high-voltage line without a step-down transformer.
- NDR-120-24 wins on installation flexibility: it's rated for more enclosure types, so you're not limited to a climate-controlled cabinet.
Product notes
Puls QT20.241
The Puls QT20.241 is a compact PULS-branded supply that takes a 480VAC input and outputs 24V DC. Mounting on a standard DIN rail, it fits in the same panel space as a basic supply while giving you the higher input voltage right at the terminal. That makes it a clean solution when your plant already runs 480VAC and you'd rather skip a separate transformer. The condition is listed as New - Open box, which is a minor consideration if you like seeing a factory seal. More importantly, the 480VAC input is a specialized spec; if your panel isn't fed by 480VAC, you won't get the benefit of that extra capability. On the plus side, the PULS name is attached to this model, and the open-box condition doesn't change the stated electrical output. For a 480VAC installation that needs a tidy, purpose-built 24V supply, this is a strong match. The compact format also leaves extra room in the cabinet for other components. If your facility standardizes on 480VAC, this supply lets you avoid a separate transformer and simplifies the wiring.
NDR-120-24
The NDR-120-24 is the pragmatic choice in this pair. It's a new supply rated for indoor and outdoor installation, so it can live in a ventilated cabinet or a sheltered outdoor enclosure. The blue housing makes it easy to identify among darker components. It delivers 24V at 5A, which is enough for relays, sensors, and small controllers. The main limitation is that 5A current rating; if your load pulls more than that, you'll need to step up to a larger supply. But for straightforward 24V control circuits, it gives you a straightforward, no-frills power source without the extra input voltage features you may never use. If your project is a simple panel upgrade or a small machine, the NDR-120-24 keeps the parts list short and the wiring straightforward. It's a new unit, so you get the peace of mind of a fresh component without the open-box caveat. The 5A output is plenty for the majority of small control panels.
Final choice by use case
Choose the Puls QT20.241 at $225 if your panel runs on a high-voltage feed and you want a compact PULS supply. Choose the NDR-120-24 at $44.99 if you want a low-cost supply for straightforward control circuits. If you're working on a standard low-voltage panel, the NDR-120-24 is all you need.
