N 125/12 KNX DIN Rail Power Supply DC 29V 320mA
The N 125/12 KNX power supply unit provides a regulated DC 29 V output at 320 mA, making it ideal for medium-sized KNX bus segments with a moderate to high device count. It installs on standard TH35 DIN rail per EN 60715 in a compact four-module-width enclosure. The integrated chokes protect the bus from current spikes and maintain reliable communication, while the additional unchoked DC 29 V output enables a second bus line to be powered via an external choke such as the N 120/02.
Technical Specifications
| Type |
KNX power supply |
| Output Voltage |
DC 29 V |
| Output Current |
320 mA |
| Chokes |
Integrated chokes |
| Additional Output |
Unchoked DC 29 V output |
| Operation Mode |
Parallel operation capability |
| Rated Operational Voltage |
AC 120 to 230 V, 50/60 Hz, or DC 220 V |
| Mounting |
DIN rail TH35 mounting per EN 60715 |
| Dimensions |
72 x 90 x 60 mm |
| Module Width |
4 module width |
| Warranty |
24 months |
Key Features
Parallel operation is supported, allowing several units to be combined for larger installations requiring more than 320 mA. The supply accepts AC 120 to 230 V at 50/60 Hz or DC 220 V, supporting both European and North American mains voltages without modification. LED status indication and robust terminal blocks simplify commissioning and maintenance.
Typical Applications
- Medium commercial buildings
- Multi-room hotels
- Office floors
- KNX lighting and shading systems
- HVAC room controllers
- Scalable automation backbones requiring parallel or redundant power supplies
- Education facilities
- Healthcare clinics
- Mixed-use developments