US Patent 7896665 Stackable electrical panel modules

An electrical panel assembly comprised of individual electrical panel modules. The electrical panel modules comprise a first receptacle comprising transmitting electrical contacts to interface with a first connector comprising receiving electrical contacts and a first rotation ring for facilitating contact between the transmitting electrical contacts and the receiving electrical contacts, where the first rotation ring rotates between an open position permitting connection or disconnection of the first connector from the receptacle and a closed position preventing connection or disconnection of the first connector from the first receptacle. The first electrical panel module interacts with a second electrical panel module in a manner that the absence of the first connector in the first receptacle prevents the second electrical panel module from accepting a second connector.