Replacement screws for ComPact NSX100/160/250. Building on 60 years of innovative and reliable protection, the ComPact NSX compact circuit breakers up to 630 A are the global industry leaders. ComPact is an essential part of EcoStruxure Power, Schneider's open, interoperable, IoT-enabled system architecture. Through this platform, we provide our customers with added value in the areas of safety, reliability, efficiency, sustainability and connectivity.