LevelOne POW-2442 — 24 V DC 120 W Industrial DIN-Rail Power Supply
24 V DC · 120 W90–264 V AC inputFanlessDIN rail · -20 to 70 °C
The LevelOne POW-2442 is an industrial 24 V DC power supply rated at 120 W (5 A) that clips onto a standard 35 mm DIN rail, made for control cabinets that power switches, controllers and sensors. 24 V DC is the standard control voltage for PLCs, industrial switches, I/O modules and sensors, and the universal 90–264 V AC input (or 127–370 V DC) means the same unit works on any mains supply.
It is fanless and cooled by free air convection, so there is nothing to wear out or clog with dust, and it carries short-circuit, overload and over-voltage protection. The output can be trimmed from 24–28 V to compensate for voltage drop on longer cable runs. It is rated for continuous operation from -20 to 70 °C, so it stays online in unheated cabinets and warm plant rooms, and each unit is burn-in tested.
What's in the Box
- LevelOne POW-2442 DIN-rail power supply
What It Means in Practice
- Mount it on the same 35 mm DIN rail as your industrial switch or controller and wire mains (L/N/PE) and the DC output to the screw terminals — no separate enclosure needed inside a cabinet.
- Size it with headroom: add up the maximum consumption of everything on the 24 V bus and keep it comfortably below 120 W.
- Use the voltage trim (24–28 V) to bring the voltage at the far end of a long DC run back to nominal.
- The DC OK relay lets a PLC or alarm input see immediately if the output fails.
What Will Not Work
- It has no mains cable or plug — it must be wired into terminals by a qualified electrician inside a cabinet.
- It does not deliver 48 V, so it cannot feed the PoE side of a switch that needs 48–56 V input for PoE.
- It is not a UPS: if mains power fails, the output drops after the short hold-up time.
- It is not rated for outdoor exposure on its own; install it inside a closed cabinet.
Key Features
Universal input
90–264 V AC, 47–63 Hz, or 127–370 V DC — one model for any mains.
Fanless design
Free air convection cooling: silent, no fan to fail or clog.
Protection
Short circuit, overload and over-voltage protection on the output.
Adjustable output
24 V nominal, trimmable 24–28 V.
Technical Specifications
| Identification |
| Part Number |
POW-2442 |
| Brand |
LevelOne |
| Type |
Industrial DIN-rail power supply |
| Input |
| Input voltage |
90–264 V AC / 127–370 V DC |
| Frequency |
47–63 Hz |
| AC current (typ.) |
2.25 A / 115 V AC · 1.3 A / 230 V AC |
| Inrush current (typ.) |
20 A / 115 V AC · 35 A / 230 V AC |
| Leakage current |
< 1 mA / 240 V AC |
| Output |
| DC voltage |
24 V |
| Rated current |
5 A |
| Rated power |
120 W |
| Voltage adjustment |
24–28 V |
| Ripple & noise |
150 mVp-p max. |
| Voltage tolerance |
±1.0 % |
| Hold-up time (typ.) |
16 ms / 230 V AC · 10 ms / 115 V AC |
| Over-voltage protection |
29–33 V |
| Physical |
| Mounting |
35 mm DIN rail |
| Cooling |
Fanless, free air convection |
| Dimensions (W × D × H) |
40 × 133 × 125.2 mm |
| Weight |
0.53 kg |
| Colour |
Silver |
| Operating temperature |
-20 to 70 °C |
| Operating humidity |
0–90 % RH |
| MTBF |
2,636.8K h (Telcordia SR-332) |
| Compliance |
EN 55032 Class A, EN 61000-3-2/-3, EN 61000-4-2/3/4/5/6/8/11, EN 61204-3, EN 55035, EN 61000-6-2 |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Manufacturer does not publish a warranty term for this model — claims handled through Singular |
Frequently Asked Questions
Can I use it to power a PoE switch?
Only for switches that run on 24 V DC and do not need 48–56 V for PoE. Most PoE switches need a 48 V supply such as the LevelOne POW-4822.
Does it come with a mains cable?
No. Industrial DIN-rail supplies are wired directly to screw terminals inside the cabinet.
What is the difference between POW-2441 and POW-2442?
Both are 24 V 120 W DIN-rail supplies with the same input range. The POW-2442 is rated to 70 °C and adds a DC OK relay; the POW-2441 is rated to 60 °C.
Singular Expert Insight · Buyer's Guide
Industrial cabinets fail most often on heat and on undersized supplies, not on the switches themselves. Choose the supply for the hottest day in the cabinet and leave 20–30 % power headroom; for 19-inch racks and cabinet mounting parts see our
rack accessories.
✓ Buy it if you need a 24 V DC rail of up to 120 W in a cabinet that can get hot, with DC OK monitoring for a PLC or alarm.
✕ Skip it if your devices need 48 V for PoE, or the total load is close to or above 120 W.
→ Also consider LevelOne POW-2441 for cooler cabinets, or POW-4822 for 48 V PoE switches.
Not sure which voltage or wattage you need? Send us the models of the devices in the cabinet and we will size the supply before you order.
