Insulation-displacement connectors and the related Insulation-piercing connectors are designed to be connected to the conductor of an insulated wire by a connection process which forces a blade or blades through the insulation, removing the need to strip the wire before connecting.
http://en.wikipedia.org/wiki/Insulation-displacement_connect...

bloc de guidage (pour connexions autodénudantes)
Partie de forme spéciale du composant qui guide et insère le ou les fils dans la ou les fentes.
guiding block (for insulation displacement connections)
http://www.tavanir.org.ir/IEC/Base/581.pdf

http://www.ifm-electronic.com.cn/obj/ifm_catalogue_09_CH_it....

Ciao Paul!
Decisamente fuori dalle mie competenze, ma ho trovato questa kudoz in francese, da cui sono risalita al fatto che uqesti morsetti si chiamano anche "ad incisione isolante" e "autodenudanti". Il resto deriva da queste considerazioni. Media confidenza, ma credo che le referenze comprovino ampiamente la scelta del termine. Attendi comunque conferme se è il caso. BUona domenica e buon lavoro :)
http://jpn.proz.com/kudoz/french_to_italian/medical:_instrum...

Try this.

http://www.google.com/search?hl=it&lr=&um=1&q=self-stripping...

http://images.google.com/images?hl=it&lr=&um=1&sa=1&q=self-s...