14/10/2026
MEAN WELL KNX-40E-1280
1280mA 38.4W DIN Rail Mount KNX Power Supply for Building Automation
Engineered for intelligent building automation systems, smart office complexes, and automated home control infrastructure requiring standardized KNX bus power. The KNX-40E-1280 delivers reliable bus voltage and auxiliary power output in a compact 4SU DIN rail footprint.
Integrated KNX bus choke with 1280mA total bus power plus auxiliary DC power output | Compact 4SU 72mm width DIN rail mounting design for easy installation inside distribution boards | Wide operating ambient temperature performance from minus 30 to plus 70 degrees Celsius | High power conversion efficiency up to 86 percent with integrated multi-protection and auto-recovery functionality | Clear LED status indicators for real-time diagnostic monitoring | Compliant with KNX certifications, DEKRA, SELV, CE, and UKCA international safety standards | Backed by a 3-year factory warranty.
Consult our smart building engineering group for technical datasheets, system topology integration, or commercial volume procurement.
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