Patent ID: 7753722

Claim:
A refractory mounting unit for ceiling mounted or wall mounted electric devices, comprising a refractory housing ( 1 ) having at least one wall and an inner ( 4 ) side and an outer side ( 5 ); the at least one wall comprising one section ( 9 ), in which internal contacts ( 6 ) are directed to an inner side ( 4 ) of the housing ( 1 ), external contacts ( 7 ) are directed and extend to an outer side ( 5 ) of the housing ( 1 ) and a line-through ( 8 ) is integrated as part of the at least one wall for electrically interconnecting the internal contacts ( 6 ) and external contacts ( 7 ); and a plug ( 2 ) having a side ( 13 ) being form-closed to the one section ( 9 ) of the at least one wall at the outer side ( 5 ) of the housing ( 1 ), the side ( 13 ) comprising contacts ( 12 ) for contacting the external contacts ( 7 ) of the housing ( 1 ), and a clamp ( 3 ) for clamping the plug ( 1 ) against the one section ( 9 ) of the at least one wall; wherein said refractory housing is configured such that upon secure mounting in an opening within the wall or the ceiling, said opening is sealed effectively separating said inner side ( 4 ) from said outer side ( 5 ).