Motorised dimmers for A.C. tungsten lighting loads are designed to be connected in series with the phase supply to a distribution board, and therefore the only fuse fitted is to protect the control circuit. Supplied internally wired and with metal covers. State type ref. Three phase models can be used for three separate sub-circuits single phase.
Dimmers open circuit at lower limit of travel.
Suitable principally for shop window, ballroom, exhibition display and fountain work. Colour kW per phase Max. Dimmers open circuit at lower limit of travel.