Power add-on for dimmer switch FUD14/800W, power MOSFET up to 400W. Standby loss only 0.1 watt. Rail-mounted device for installation on a mounting rail. Power add-ons FLUD14 can be connected to the universal dimmer switches FUD14/800W, increasing the switching capacity by up to 200W for a single light fixture and up to 400W for additional fixtures, depending on the ventilation conditions, per power add-on. The two circuits for power enhancement can be executed with multiple FLUD14 units simultaneously. Supply voltage is 230V. No minimum load required. Automatic electronic overload protection and over-temperature shutdown. The lamp type of a FLUD14 power add-on may differ from the lamp type of the universal dimmer switch FUD14/800W in the power enhancement circuit with additional fixtures. This allows for mixing capacitive and inductive loads. A ventilation distance of 1/2 unit spacing must be maintained from adjacent mounted devices.