CHINT NB8 -63H Miniature Circuit Breaker,
provides reliable protection for residential, commercial, and industrial electrical systems.
It safeguards circuits against short-circuits and overloads, ensuring safe operation and isolation.
Designe for AC 230/400V, 50Hz networks, the NB8-63H offers B, C, and D tripping curves for various load types and a breaking capacity of 10kA.
With 1–63A rated current range, up to 4 poles, and 20,000 mechanical operations,
it delivers high performance, durability, and IEC 60898-1 compliance.
- Function: Protection against short-circuit and overload currents; isolation and switching
- Standard Compliance: IEC 60898-1
- Rated Current (In): 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
- Rated Voltage (Ue): 230/400V AC
- Rated Frequency: 50Hz
- Number of Poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P
- Tripping Characteristics:
- B Curve (3–5 In): For long cables and personal protection (TN/IT systems)
- C Curve (5–10 In): For resistive/inductive loads with low inrush current
- D Curve (10–16 In): For circuits with high inrush currents (transformers, discharge lamps)
- Rated Breaking Capacity: 10kA
- Rated Insulation Voltage (Ui): 500V
- Rated Impulse Withstand Voltage (Uimp): 6kV
- Mechanical Life: ≥20,000 operations
- Electrical Life: ≥10,000 operations
- Terminal Connection: Cable/U-type/Pin-type busbar
- Terminal Size (Cable): 25mm² max
- Terminal Size (Busbar): 10mm² max
- Tightening Torque: 2 N·m (17.7 In-lbs)
- Mounting: DIN rail (EN 60715, 35mm), fast clip device
- Connection: From top or bottom
- Ambient Temperature: −35°C to +70°C
- Storage Temperature: −35°C to +70°C
- Protection Degree: IP20
- Pollution Degree: 3
- Compatible Accessories: S9, V9, XF9, XF9J, OVT-1, OUVT-1
