Weld-free short-circuits: fuseless SIRIUS 3R load feeders

摘要

New contactors have been developed in the modular SIRIUS{sup}TM 3R system, especially for the highest demands when it comes to availability. These contactors, together with the appropriate circuit-breakers can be used to create weld-free, fuseless load feeders. The contactor contacts don't even weld at short-circuit currents up to 50 kA.