✅ CHINT 636018 – NJBY1 AC380V Protection Relay Three-phase 4-wire protection relay rated for 380V, 50Hz, designed to monitor overvoltage, undervoltage, phase failure, and phase sequence issues in AC systems. 🔹 Description (English): The CHINT NJBY1 AC380V protection relay is engineered for reliable monitoring and protection of AC systems against common faults. Operating in three-phase, four-wire AC 380V/50Hz networks, it provides continuous supervision of overvoltage, undervoltage, phase failure, and phase sequence anomalies. Ideal for industrial and commercial applications, this relay enhances system safety and helps prevent equipment damage by immediately responding to abnormal voltage or phase conditions. It is compliant with IEC/EN 60947-4-1 and CE certified for international use. 🔹 Key Features: • Rated voltage: AC380V (50Hz) • Connection: 3-phase, 4-wire • Protection functions: Overvoltage, Undervoltage, Phase Failure, Phase Sequence • High reliability for AC power systems • Compact design for easy panel integration • Standards compliant: IEC/EN 60947-4-1 • CE Certified 🔹 Technical Specifications (English): Parameter Value Model NJBY1 AC380V Part Number CHINT 636018 Rated Voltage AC380V (50Hz) Connection Type 3P4W Monitoring Functions Overvoltage, Undervoltage, Phase Failure, Phase Sequence Application AC System Protection Standard Compliance IEC/EN 60947-4-1 Certification CE