MDT KNX bus power supply – Efficient power supply with integrated diagnostics
The MDT KNX bus power supply combines high-performance power delivery with state-of-the-art diagnostic and monitoring technology. Available in 640 mA , 960 mA , and 1280 mA versions, it ensures a reliable power supply for KNX systems in smart homes, commercial buildings, and large-scale projects. Thanks to its integrated diagnostic functions, it continuously monitors the status of the KNX bus, ensuring maximum operational reliability and efficiency.
Key features
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Stable and efficient power supply
- Constant stabilized output voltage: 30 VDC SELV
- Additional unthrottled output for flexible applications
- Available variants:
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STC-0640.01 : 640 mA nominal current (4 TE)
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STC-0960.01 : 960 mA nominal current (6 TE)
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STC-1280.01 : 1280 mA nominal current (6 TE)
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Integrated diagnostic functions
- Continuous monitoring of bus voltage , bus current and bus overload
- Detection of mains voltage failures and automatic recovery
- Ring buffer with timestamp for events – readable via 14-byte telegram
- Early detection of device failures and line faults in the KNX system
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user-friendliness
- Multicolor LED indicators to display operating status, overcurrent, overtemperature and bus errors
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Short-circuit and overload protection for safe operation
- Integrated reset function for bus reset directly on the device
Technical details
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Current and voltage
- Supply voltage: 230 VAC, 50 Hz
- Output voltage: 30 VDC SELV
- Rated current: 640mA / 960mA / 1280mA
- Peak current:
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STC-0640.01 : 1200 mA
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STC-0960.01 : 1600 mA
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STC-1280.01 : 1900 mA
- Efficiency at rated load:
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STC-0640.01 : > 85 %
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STC-0960.01 : > 87 %
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STC-1280.01 : > 89 %
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Dimensions and protection
- Sizes: 4 HP (STC-0640.01), 6 HP (STC-0960.01 / STC-1280.01)
- Protection class: IP20 – suitable for dry indoor areas
- Operating temperature: 0 to +45 °C
- Overvoltage category: III
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Assembly and connection
- Mounting type: DIN rail (35 mm, DIN rail mounting device)
- Screw terminals: up to 4 mm² (solid) / 2.5 mm² (stranded)
- KNX bus terminal: Ø 0.8 mm (solid conductor)
Applications
- Reliable energy supply for KNX systems in smart homes, offices and commercial buildings
- Monitoring and fault diagnosis for stable and secure KNX installations
- Ideal for small to large networks with variable performance requirements
Additional benefits
- Production in Germany – certified according to ISO 9001
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3-year manufacturer's warranty for long-term reliability
- Easy integration into KNX systems and parameterization via ETS
Product information
Manufacturer part number: STC-0960.01
Article number: SMH0300
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