Description
Introduction
The theben JM 4 T KNX (Item no. 4940250) is a 4-way blind actuator belonging to the FIX1 series, engineered for KNX building automation systems. Designed for standard DIN rail installation, this module provides control over motor drives for blinds, shutters, sun and vision protection devices, skylights, and ventilation flaps. This device is part of our KNX Actuators products range.
Operating on a mains supply voltage of 110 V AC to 240 V AC (50-60 Hz) with standby power consumption of approximately 0.3 W, this unit features 4 NO contact outputs rated at 6 A. It offers manual operation directly on the device, allowing functional testing and control even without an active KNX bus connection.
Key Features
- 4 control channels with 6 A Normally Open (NO) contacts.
- Powered via KNX bus voltage (current consumption ≤4 mA).
- Operating voltage range of 110 V AC – 240 V AC at 50 Hz – 60 Hz.
- Terminal screw connections for power/load and KNX bus terminal for bus connection.
- Accommodates solid wire cross sections from 0.5 mm² to 6 mm² and stranded wire with end sleeves from 0.5 mm² to 4 mm².
- Designed for DIN rail mounting with IP 20 protection rating and Class II protection according to EN 60 669.
Benefits
- Supports manual override directly on the device, enabling functionality testing without an active KNX bus connection.
- Low standby energy consumption of approximately 0.3 W for efficient panel operation.
- Wide operating voltage compatibility ranging from 110 V AC to 240 V AC at 50 Hz to 60 Hz.
- Standard DIN rail mounting with a width of 4 modules for streamlined switchboard integration.
- Potential-free switching outputs suitable for SELV applications when the entire unit switches SELV.
Technical Specifications
Applications
- Control of motorized drives for window blinds, shutters, and sun protection devices in KNX commercial and residential automation systems.
- Automated regulation of skylights and ventilation flaps driven by AC motor operators.
Installation Notes
- Mount the unit on a standard DIN rail inside an enclosure matching IP 20 operating environments.
- Connect wiring using terminal screws for solid wire (0.5 mm² to 6 mm²) or stranded wire with end sleeve (0.5 mm² to 4 mm²).
- Ensure the operating temperature remains within the specified range of -5°C to 45°C during operation.
Developer Resources
- KNX-Database (Single Product) ZIP package available for ETS integration.
- Handbook (ZIP) and Operating Instructions (PDF) for engineering reference.
- Data Sheet and CE Declaration of Conformity (PDF).
FAQ
Can the theben JM 4 T KNX be operated manually without an active bus line?
Yes, manual operation is available directly on the device even without a bus connection. Explore more products from theben for professional building automation projects.
What is the output contact rating for the channels on this actuator?
The device features 4 NO contacts rated at 6 A each. For certificates and current technical files, refer to the official theben documentation.
What mounting form factor does the JM 4 T KNX use?
It is a DIN rail mounted device with a width of 4 modules.
What is the operating voltage range for this unit?
The operating voltage is 110 V AC to 240 V AC at 50 Hz to 60 Hz, with KNX bus power consuming ≤4 mA.
What is the exact product model?
The order/model code for this page is 4940250. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by theben.
Conclusion
The theben JM 4 T KNX (4940250) is a versatile 4-way blind actuator built for standard DIN rail installation. Featuring 6 A NO contacts, manual override capabilities, and standard KNX bus compatibility, it provides an efficient control solution for motorized sun protection, blinds, and ventilation flaps. Installers and system integrators can review our installer purchasing support options.
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