CDN 3083 Surge 
Three phase 440 VAC/DC and 620 VAC/DC 100 and 200 A manual coupling/decoupling networks (CDNs) for Surge.
CDN 117/118
CDN 117 Data Line Coupling/Decoupling Network.
CDN 118 Telecom Line Coupling/Decoupling Network.
CDN 118 Telecom Line Coupling/Decoupling Network.
CDN HSS-2
Coupling Decoupling Network for unshielded symmetrical high speed communication lines.