CHINT NXB-40 Miniature Circuit Breaker (MCB)

CHINT NXB-40 Miniature Circuit Breaker (MCB),
it is engineere to deliver overload and short-circuit protection in AC 230V, 50/60Hz electrical systems.
and it is Designe for residential, commercial,
and light industrial applications, this compact breaker ensures positive isolation and reliable performance.
With a rated current range of 6–40A and a breaking capacity of 4.5kA, the NXB-40 combines safety, precision,
and durability. It meets IEC/EN60898-1 standards and features a long mechanical and electrical lifespan, making it a dependable solution for power distribution systems.

• Compliant Standards: IEC/EN60898-1
• Certifications: CE, RoHS compliant
• Primary Function: Overload and short-circuit protection; positive isolation
• Rated Current (In): 6A, 10A, 16A, 20A, 25A, 32A, 40A
• Rated Voltage (Ue): AC 230V
• Rated Frequency: 50/60Hz
• Thermal-Magnetic Release: Type C and Type D curves
• Number of Poles: 1P+N
• Rated Short-Circuit Breaking Capacity (Icu): 4.5kA
• Rated Service Short-Circuit Capacity (Ics): 4.5kA
• Rated Impulse Withstand Voltage (Uimp): 4kV
• Mechanical Life: 20,000 operations
• Electrical Life: 10,000 operations
• Power Consumption per Pole:
  • 6–10A: 2W
  • 16–32A: 3.5W
  • 40A: 5W
• Terminal Cross-section: 1–10 mm² (Cu wire)
• Standard Connection Torque: 1.5 N·m
• Maximum Torque: 2.0 N·m
• Wire Insertion Depth: 10 mm
• Reference Temperature: 30°C
• Operating Temperature Range: –35°C to +70°C
• Storage Temperature Range: –35°C to +85°C
• Rated Altitude: ≤2000 m
• Protection Degree:
  • Direct Mounting: IP20
  • Installed in Distribution Box: IP40
• Mounting Type: TH35-7.5 DIN rail mounting
• Cable Entry: Top or bottom
• Compatible Accessories: AX-X1, AL-X1, SHT-X1, OVT-X1, UVT-X1, OUVT-X1