The NA8 Air Circuit Breaker (ACB) is CHINT’s advanced low-voltage power distribution solution, engineered for reliability and intelligent protection. With frame sizes from 1600A to 7500A and breaking capacities in N, H, and HU types, it supports 3P/4P configurations and fixed or draw-out mounting. The NA8 offers comprehensive protection functions, communication-enabled smart control, harmonic monitoring, and multiple interlocking options—ideal for critical power applications in industrial, commercial, and infrastructure settings.

• Frame Sizes: 1600A, 2500A, 3200A, 4000A, 7500A
• Breaking Capacity: N (standard), H (high), HU (high voltage)
• Rated Operational Voltage: 380/400/415V, 690V, 800V, 1000/1150V
• Poles: 3 or 4
• Mounting Options: Fixed & draw-out types, horizontal/vertical/mixed connection
• Protection Functions: Overload (L), short-circuit (S & I), earth fault (G), advanced harmonic measurement
• Intelligent Controller Types: M (basic), H (communication + LCD), S (IoT-enabled)
• Environmental Ratings: -5°C to +40°C certified, up to -45°C~+70°C (M type), EMC compliant per IEC/EN 60947-2
• Accessories & Safety: Interlocks, key locks, padlocks, optional position indicators, remote operation mechanisms