MEAN WELL KNX DIN Rail Power Supplies

MEAN WELL KNX DIN Rail Power Supplies feature an LED indicator for normal operation, bus reset, and overload bus. The KNX DIN rail power supplies come in KNX-40E-1280 and KNX-20E-640. These power supplies provide compact sizes with 4SU width (72mm) for KNX-40E-1280 and 3SU width (52.5mm) for KNX-20E-640. KNX DIN rail power supplies can operate at a temperature ranging from -30°C to +70°C. Typical applications include alarm monitoring, blinds, shutters, energy management, HVAC system, lighting control, modern building automation, security systems, and monitoring systems.

Features

KNX-20E-640

  • Compact size with 3SU 52.5mm width
  • Cooling by free air convection
  • Installed on DIN rail TS-35/7.5 or 15
  • Isolation class I
  • Led indicator for normal operation, but reset and bus overload

KNX-40E-1280

  • Compact size with 4SU 72mm width
  • Cooling by free air convection
  • Monitoring of output voltage, output current, bus traffic load, and device temperature
  • Provide a wide variety of diagnostic and logic function
  • Suitable for TP1-256

Applications

  • Alarm monitoring
  • Blinds and shutters
  • Energy management
  • HVAC system
  • Intelligent home control
  • Lighting control
  • Modern building automation
  • Monitoring systems
  • Security systems

Technical Specifications

Parameters Values
KNX-20E-640 KNX-40E-1280
Input voltage range 180VAC to 264VAC
230VDC to 370VDC 230VDC to 370VDC
Rated current 640mA 1280mA
Rated power 19.2W  38.4W
Leakage current <1mA / 240V AC
Opertaing temperature range -30°C to +70°C
Short circuit current 1.4A 2.8A