Description
Introduction
The theben PS 640 mA T KNX (Item no.: 9070958) is a dedicated system power supply designed to deliver continuous power and monitoring for KNX bus networks. Operating on a 230 V AC to 240 V AC mains voltage at 50–60 Hz, the unit generates a regulated 30 V DC (SELV) auxiliary supply with a 640 mA output rating to support reliable bus communications across installed devices. Explore more products from theben for professional building automation projects.
Designed for standard DIN rail installation with a 4-module width and IP 20 protection, this power supply includes an integrated throttle drive/choke for line decoupling. It offers efficient performance with a standby power consumption of ≤0.8 W and provides a mains failure bridging time of at least 130 ms to preserve system stability during short voltage dips.
Key Features
- Nominal KNX output current of 640 mA at 30 V DC (± 2 V, SELV).
- Mains operating voltage range of 230 V AC – 240 V AC (50 Hz – 60 Hz).
- Single-line KNX output featuring an integrated throttle drive.
- Class II protection according to EN 60 730-1 with IP 20 degree of protection.
- Standard KNX bus connection terminals for direct installation.
- Wide operational ambient temperature range from -5°C to 45°C.
Benefits
- Maintains continuous bus operation through voltage dips with a minimum mains failure bridging time of 130 ms.
- Integrated choke/throttle drive decouples power supply outputs directly for 1 KNX bus line.
- Energy-efficient standby consumption limited to ≤0.8 W.
- Built-in protection features an uninterrupted short-circuit current cap of max 1.4 A.
- Compact 4-width DIN rail execution allows straightforward mounting in standard switchboards.
Technical Specifications
Applications
- Powering and monitoring single or multi-line KNX building automation networks in commercial and residential properties.
- Providing regulated 30 V DC SELV auxiliary voltage for connected KNX system components mounted on distribution boards.
Installation Notes
- Mount the unit on standard DIN rails within an IP 20 enclosure, ensuring operating temperatures remain within the -5°C to 45°C window.
- Connect mains power (230-240 V AC) and standard KNX bus wiring to the designated connection terminals according to line planning specs.
Developer Resources
- Download the official product data sheet, EU Data Act information notice, and CE declaration of conformity in PDF format.
- Access the ETS KNX-Database ZIP file for seamless configuration and commissioning in KNX software.
FAQ
What is the output voltage and current rating of the theben PS 640 mA T KNX?
The power supply delivers a nominal current of 640 mA at 30 V DC (± 2 V, SELV). For certificates and current technical files, refer to the official theben product page.
Does this power supply require a separate KNX choke?
No, the unit includes an integrated throttle drive (choke) for 1 KNX output line.
What is the mains failure buffering time on SKU 9070958?
The unit provides a minimum mains failure bridging time of 130 ms to maintain continuous bus functionality during power interruptions.
What is the exact product model?
The order/model code for this page is 9070958. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by theben.
Where can I find the official technical documentation?
Use the manufacturer product page and datasheets for this exact SKU. Always verify the latest revision before specifying the product.
Conclusion
The theben PS 640 mA T KNX (9070958) combines integrated line decoupling, low standby power loss, and short-circuit protection in a compact 4-module DIN rail form factor to ensure continuous operational stability for KNX networks. Installers and system integrators can review our become a KNX dealer options.
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