Contact Arms for MV Switchgear

Contact arms are the structural conductor components that connect the operating mechanism in an MV switchgear assembly to the contact face. They carry full breaker current, support the mechanical motion of opening and closing, and in many designs serve as the visible movement element when the breaker actuates. Material choice ranges from pure copper for the highest conductivity, through aluminum for cost-sensitive builds, to copper-aluminum bimetal where weight and current both matter. We supply contact arms in single-piece configurations (one arm per assembly) and matched pairs (two arms working as a coordinated unit in the breaker mechanism). Custom geometries from drawing are routine.