Finder 78.2K.1.230.3000 is a DIN rail KNX switch mode power supply providing a regulated 30 V DC SELV output at up to 640 mA for professional building automation and KNX bus installations.
£213.17
The Finder 78.2K.1.230.3000 is a dedicated KNX switch mode power supply designed to provide a stable 30 V DC SELV output for KNX bus installations in building automation and intelligent electrical control systems. As part of the Finder 78 Series, it provides up to 640 mA of bus current and incorporates diagnostic indication and electrical protection for dependable KNX operation.
Designed specifically for KNX installations, the 78.2K.1.230.3000 operates from a nominal 230–240 V AC, 50/60 Hz supply, with an operating range of 185–260 V AC. Its regulated KNX bus output is nominally 30 V DC, with an operating output range of approximately 29–31 V DC.
The power supply incorporates dedicated KNX bus connectors together with three diagnostic LEDs for rapid visual status monitoring. A green LED indicates correct DC output, while red and yellow indicators provide warning of overload, overtemperature and overvoltage conditions. Its compact DIN rail format makes it suitable for installation within building automation distribution boards and electrical control cabinets.
KNX installations require a dedicated SELV power supply to energise the bus and allow connected sensors, actuators, controllers and user interfaces to communicate reliably. The Finder 78.2K.1.230.3000 provides the required 30 V DC KNX bus supply with up to 640 mA of available current for building automation networks.
Integrated diagnostic LEDs make system commissioning and troubleshooting easier by providing immediate indication of normal DC operation, overload, excessive temperature and overvoltage conditions. Combined with thermal, overload and short-circuit protection, the 78.2K provides a robust power source for professional KNX building control installations.
| HS Code | 85044095 |
|---|---|
| Country of Manufacture | Italy |
| Manufacturer | Finder |
| Series | 78 Series |
| Model | 78.2K.1.230.3000 |
| Product type | KNX switch mode power supply |
| Bus system | KNX |
| Nominal output voltage | 30 V DC SELV |
| Output voltage range | 29–31 V DC |
| Maximum output current | 640 mA |
| Nominal input voltage | 230–240 V AC |
| Input operating range | 185–260 V AC |
| Input frequency | 50 / 60 Hz |
| Maximum input current | 0.25 A |
| Standby power consumption | 1.45 W at 230 V AC |
| Power factor | 0.62 |
| Dielectric strength between input/output | 3000 V AC |
| Protection rating | IP20 |
| Thermal protection | Integrated |
| Overload protection | Integrated |
| Short-circuit protection | Integrated |
| Status indication | Three diagnostic LEDs |
| KNX software compatibility | ETS 4 or later |
| Mounting type | 35 mm DIN rail (EN 60715) |
| Width | 70 mm |
| Dimensions (H × W × D) | 88.8 × 70 × 60.8 mm |
| Operating temperature | -5 to +45 °C |
| Minimum distance between KNX power supplies | 15 m |
The Finder 78.2K.1.230.3000 is a dedicated KNX bus power supply used to provide the low-voltage DC power required by KNX sensors, actuators, controllers and other building automation devices.
The power supply provides a nominal 30 V DC SELV output for the KNX bus, with an output range of approximately 29–31 V DC and a maximum output current of 640 mA.
The unit has a nominal input supply of 230–240 V AC at 50/60 Hz and operates across an input voltage range of approximately 185–260 V AC.
Yes. The unit incorporates three diagnostic LEDs, including a green DC OK indicator, a red overload/overtemperature indicator and a yellow overvoltage indicator.
Yes. The power supply incorporates thermal, overload and short-circuit protection to support dependable operation of the connected KNX bus system.
The power supply is designed for vertical mounting on a standard 35 mm DIN rail inside an electrical cabinet or distribution board and includes dedicated connectors for the KNX bus.
Finder 78 Series KNX power supplies provide dedicated, protected DC power for professional building automation networks, combining reliable KNX bus operation, clear diagnostic indication and convenient DIN rail installation for residential, commercial and industrial control systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...