Abstract: A connector has five or six abutment surfaces for cable ducts. The cable ducts may have substantially square end faces or rectangular end faces half as large. The connector has a main body made of metal, which exhibits one or two square abutment surfaces or portions thereof, and which exhibits four smaller substantially rectangular abutment surfaces.

Abstract: A connector has five or six abutment surfaces for cable ducts. The cable ducts may have substantially square end faces or rectangular end faces half as large. The connector has a main body made of metal, which exhibits one or two square abutment surfaces or portions thereof, and which exhibits four smaller substantially rectangular abutment surfaces.

Abstract: A clamping component composed of metal and used to clamp a profiled element composed of metal has at least one clamping surface adapted to the profiled element, at least one cutting element which includes a cutting edge that extends beyond the clamping surface, thereby enabling the cutting element to penetrate the profiled element when the clamping component clamps the profiled element; and an engagement element for introducing a clamping force, wherein the cutting edge is situated at a slant and/or curve relative to the clamping surface such that the cutting edge initially touches the profiled element in a punctiform manner while the clamping part is clamped tightly, and an increasing region of the cutting edge subsequently penetrates the profiled element.