Description
Introduction
The Schneider SpaceLogic KNX Fan Coil Actuator REG-K (SKU: MTN645094) is a DIN rail-mounted control module engineered for heating, ventilation, and air conditioning (HVAC) systems in KNX smart building installations. Operating within a nominal voltage range of 207 to 253 V AC, this light grey actuator provides precise control for fan convector units up to three fan speeds, optimizing energy usage and supporting reduced operational cost. This device is part of our KNX AC Controller products range.

Designed for standard DIN rail installation consuming four 18 mm modules, the actuator supports both manual operation and automated bus control via the KNX system. It features five total switching outputs—comprising three 16 A outputs for fan speed control and two 0.5 A outputs for 230 V AC or 24 V AC valve regulation—along with two binary inputs for SELV signal voltages.
Key Features
- Part of the Schneider SpaceLogic KNX product series.
- Designed for heating, ventilation, and air conditioning (HVAC) fan coil control.
- Controls fan convectors up to 3 fan speeds.
- Output current switching: 3 outputs at 16 A and 2 outputs at 0.5 A.
- Compatible valve load types: 230 V AC and 24 V AC.
- Binary input function: 2 x binary inputs for SELV signal voltage.
- Nominal operating voltage range: 207 V AC to 253 V AC.
- DIN rail mounting taking up 4 modules of 18 mm width.
Benefits
- Energy Optimization: Centralized climate regulation over the KNX bus minimizes energy consumption, leading to operational cost savings.
- Versatile Load Switching: Equipped with 3 x 16 A switching outputs for fan control and 2 x 0.5 A outputs for valve actuation.
- Flexible Dual-Mode Operation: Supports both manual operation and automated KNX bus control for straightforward commissioning and testing.
- SELV Signal Inputs: Features 2 binary inputs for low-voltage SELV signals to capture external status inputs.
- Compact Form Factor: Consumes 4 x 18 mm modules on a standard DIN rail with IP20 enclosure protection.
- Environmental Transparency: Manufactured with a total life cycle carbon footprint of 7 kg CO2 eq. and packaged using at least 70% recycled cardboard.
Technical Specifications
Applications
- HVAC and fan coil unit control in residential and commercial KNX building automation systems.
- Integrated room temperature control managing 3-speed fans alongside 24 V AC or 230 V AC heating/cooling valves.
- New building projects requiring adaptable and central KNX climate control to maximize energy efficiency.
Installation Notes
- Mount the module onto a standard DIN rail inside an enclosure providing an IP20 or higher protection rating.
- Verify supply voltage falls within the nominal operating range of 207…253 V AC prior to powering the device.
- Ensure total current loads do not exceed 16 A for fan switching channels and 0.5 A for valve control channels.
Developer Resources
- Access official product data sheets and user manuals through Schneider technical distribution channels.
- Explore compatible products on the Schneider KNX page at https://knxbazzar.com/knxshop/?brand=schneider
FAQ
How many fan speeds can the Schneider MTN645094 actuator control?
The SpaceLogic KNX Fan Coil Actuator is capable of controlling fan convectors with up to three fan speeds. Explore more Schneider building automation products for professional building automation projects.
What valve load voltages are supported by this device?
The actuator supports switching for both 230 V AC valves and 24 V AC valves. For certificates and current technical files, refer to the official Schneider documentation.
How many DIN modules does this unit occupy?
The device occupies 4 modules of 18 mm width on a standard DIN rail.
What are the output switching current ratings?
It features 3 outputs rated at 16 A for fan control and 2 outputs rated at 0.5 A for valve actuation.
What is the exact product model?
The order/model code for this page is MTN645094. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by Schneider.
Conclusion
The Schneider SpaceLogic KNX Fan Coil Actuator REG-K MTN645094 provides a precise and reliable solution for managing HVAC fan coil systems in KNX automation networks. With flexible output switching, manual control options, and binary inputs, it delivers consistent operational efficiency and long-term performance. Installers and system integrators can review our become a KNX dealer options.






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