The POSI-BREAK system not only protects your operators, but increases reliability by reducing outages.


Partial vacuum flashovers result in line-to-ground faults, cause expensive outages, system damage, cause over-current protection to operate, and most importantly can be dangerous to operators. Protection of your most important asset is always a concern. Cooper Power Systems listened to these concerns and answered with our POSI-BREAK Elbow and Cap, and the POSI-BREAK Elbow Arrester to increase your safety options.

Integrity and Reliability

Dielectric breakdown on underground operating systems is influenced by many factors, such as interface contamination, operating variations and high altitude. These factors contribute to the possibility of interface flashover.

The design developed by Cooper Power Systems engineers takes these system variables into consideration, not just the phenomenon of partial vacuum induced flashover.