The MicroLogic Vigi 4.3 Trip unit 400A rated C4034V400 has proven to be a reliable and effective solution for protecting our systems. The electronic basic functions and current leakage protection add an extra layer of safety. We have used it in the ComPacT NSX400/630 and have appreciated its performance and ease of use. Schneider Electric continues to set the standard in electrical engineering, and the C4034V400 confirms their reputation for quality and reliability. Recommended for anyone looking for advanced and reliable solutions to protect electrical systems.