Series Mean well - KNX-40E-1280

Mean Well - KNX-40E-1280

The Mean Well KNX-40E-1280 series is a dedicated KNX power supply built for modern smart building projects. This unit delivers a steady 38.4W at 30V and 1.28A, making it the perfect match for KNX actuators, sensors, and control modules. Designed with installers in mind, it cuts down setup time while keeping your system running smoothly. Whether you are wiring a new office, retrofitting a home, or upgrading a commercial space, this power supply gives you the reliable DC energy you need without the guesswork.

Simple Setup and Clear Wiring

Installers love this series because it gets the job done fast. The unit mounts directly to standard DIN rails, saving you time and tools. Terminal blocks are clearly labeled for power input, KNX bus connection, and DC output, so you can wire it correctly on the first try. The KNX bus connection is plug-and-play, meaning you just run the bus cable through the terminals and you are ready to go. No complex programming is needed just to power up the line.

Stable Power for Sensitive Devices

Smart building devices need clean, steady power to avoid false triggers or communication drops. The KNX-40E-1280 uses high-quality components to filter out noise and keep voltage steady, even when multiple devices draw power at once. Built-in protection against short circuits, overloads, and overvoltage keeps your KNX network safe. If a fault occurs, the unit shuts down safely and can be reset quickly, minimizing downtime on site.

Compact Size for Tight Control Cabinets

Space is often limited in electrical panels and distribution boxes. This series features a slim, low-profile design that fits neatly into crowded enclosures without blocking airflow. The efficient internal layout helps the unit run cool, reducing the need for extra fans or large ventilation gaps. You can stack multiple units side by side or place them in tight corners, keeping your panel organized and professional.

Built to Last with Trusted Quality

Mean Well has a strong reputation for making power supplies that survive daily job site conditions. The KNX-40E-1280 is tested to meet strict international safety and performance standards. It handles temperature swings and power fluctuations without breaking a sweat. Backed by solid manufacturer support and a long service life, this series is a smart choice for electricians who want to finish the job right and avoid callbacks.