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Centre break disconnectors type CBD consists of three poles. Each pole consists of a frame, two rotating support insulators and a main blade that moves horizontally. The main blade consists of a U-shaped tube, in which the main contacts and the rotating contacts are installed. The rotating contact consists of a silver-plated copper pin and a bronze housing. Silver-plated bronze balls, which are pressed against these two parts by means of a stainless steel spring, ensure that the current is transferred from the pin into the housing. This contact construction is sealed and maintenance free. All CBD are for outdoor use.

The disconnectors can be equipped with insulators in accordance with DIN, IEC or other specifications.

Centre break disconnectors are operated single-pole or three-pole by means of a motor or manual operated drive mechanism inside an IP54 housing, with torques up 850Nm and including up to 10 auxiliary contacts for position indication.

Optional earthing switches can be build-on to the horizontal double break disconnector to the right hand side and/or to the left hand side.

The disconnectors are designed and tested in accordance with latest IEC specifications.

Advantages • More than 70 years experience • Durable and reliable design • Pre-assembled and adjusted in our works for quick installation • Easy installation and adjustment at site without special tools • Suitable for installation in areas with severe climatic conditions • Virtually maintenance free • Long service life

Some Technical Features • Square tube frame with bearing housing and the turntable installed in the centre • Turntable supported by two roller bearings with bearing housing sealed and filled up with grease • Silver-plated copper contacts installed inside the main blade • Sealed contact construction • Self-cleansing contacts • Optional anti-corona shields depending on voltage rating • Hot-dip galvanized steel parts