The 298G4 is a European-type grounded adaptor plug from the 298G series, designed to provide a ground connection between equipment and international power sources. It features a heavy-duty design with a plastic shell and double wipe contacts for a secure connection. As a purely mechanical device, this adaptor matches the pin-outs of receptacles and plugs without affecting voltage. It is intended for indoor use only and is compatible with Hammond's 171, 172, 175, 176, 179, 289 & 298 series transformers. The 298G4 is suitable for use in countries such as Austria, Belgium, Finland, France, Germany, the Netherlands, and Sweden.