Patent ID: 7262519
Filing Date: 2007-08-28
Classification: H01H

Abstract:
1. An actuator unit comprising: at least two contactors, adapted to open and close a three-phase circuit, the three-phase circuit being adapted to be opened as soon as at least one of the contactors is deactivated; and a drive unit, adapted to be supplied, by at least one safe disconnection channel, with an emergency disconnection signal for the three-phase circuit, on the basis of which the drive unit is adapted to open the three-phase circuit by driving at least one of the contactors, wherein the contactors and the drive unit are combined to form an installation module which is removable as a unit, wherein the emergency disconnection signal is passed on from the drive unit via a safe output channel to a further actuator unit, the safe output channel having fewer connections than the at least one safe disconnection channel.