Recommended for protection of distribution and terminal equipment in analog, ISDN, HDSL and ADSL telecommunication systems. Designed for the partial or complete equipping of LSA-PLUS® NT or LSA PROFIL® NT disconnection or switching modules in conjunction with a 10-pair earth bar (Order No.: 7019 3 037-00).

The protection circuit consists of a 3-pole overvoltage arrestor, fail-safe contact, reversible overcurrent protection components and diodes for secondary overvoltage protection. The overcurrent protection functions as a reversible line fuse.