Power Supply Gira KNX 320 mA with Choke REG 212200 for KNX Installations

The Gira KNX power supply REG 212200 delivers a stabilized 320 mA output with an integrated choke designed for KNX bus systems. It supplies KNX devices and sensors with the required bus voltage while damping disturbances on the bus line. The device is intended for mounting in standard electrical distribution boards and is suited for both residential and commercial KNX installations where a dedicated 320 mA source and line filtering are needed.

Advantages

The power supply provides a constant 320 mA current to KNX installations and includes an integrated choke to reduce electromagnetic interference and voltage dips on the bus line. Its compact form factor enables mounting in common DIN-rail distribution cabinets and simplifies wiring by offering a reliable centralized power source for multiple KNX devices. The unit is designed to meet the electrical requirements of KNX components, ensuring stable operation and improved bus communication.

Suitable for

When it may not be suitable

This power supply is not intended for standalone use with non-KNX devices or for systems that require more than 320 mA of bus current. If the KNX installation demands higher total bus current or multiple independent power domains, a higher-capacity or additional KNX power supply should be considered. It is also not suitable where different system voltages or specialized power management functions are required.

Key specifications

How to use

Install the power supply on a DIN-rail inside the distribution board according to local electrical regulations and wiring standards. Connect the mains input and the KNX bus output following the manufacturer's wiring diagram and ensure correct polarity and secure terminations. After powering the unit, verify that the KNX bus voltage is within expected ranges and monitor communication stability. If additional bus segments or longer cable runs are used, review voltage drop and consider segmentation or additional supplies as needed.

What to consider before purchase

Recommendations

Use this power supply as the main 320 mA feed for a single KNX line or as part of a segmented KNX installation. Combine with proper bus topology planning, correct cable types, and secure terminations to maintain stable KNX communication and minimize interference.