The heat shrink connection set enables a simple, quick and secure cable connection with heat shrink compression connectors for all common plastic cables with PVC or XLPE insulation in low voltage. The connection sets can be laid underground and in above-ground outdoor systems as well as in indoor systems. The heat shrink compression connectors are suitable for copper and aluminum conductors. They meet the requirements of 0278 Part 623. Conductor cross-section for N (A) YY 3 x 1.5 - 4 x 6 mm