Abstract: A connection device for low-voltage electrical equipment, such as circuit breakers, disconnectors and isolators, and corresponding accessories, having a substantially parallelepipedal structure with a first pair of faces, a second pair of faces, and a third pair of faces with the faces of each pair set opposite to one another. Each face of said first pair of faces is designed to receive electrical coupling means, whilst at least two faces of said second and third pairs of faces are equipped with mechanical coupling means for connection with said low-voltage equipment, and/or with a further connection device.