good part to a lesser extent, the ....

... Are annoying - at ELTACO been around for over 10 years, the problem - the screws. If you intend to install the stuff more often, it is worthwhile zurechtzuschleifen a screwdriver specifically for these screws. These bastards of slot and Phillips else doing yourself any favors. Commercial tool does not fit perfectly. Another penalty: no lateral offset between the upper and lower level. So if you have ran for some reason at the rear (power) connections, you may need only the front (control) terminals unscrew, otherwise you can not get in a closely-built distribution to the rear screw. Klöckner Moeller (Eaton) is mounted as much more pleasant!