CHINT NB8 -63 Miniature Circuit Breaker,
provides reliable protection for residential, commercial, and industrial electrical systems.
It safeguards circuits against overload and short-circuit currents, while offering efficient switching and isolation.
Available with B, C, and D tripping curves,
the NB8-63 supports diverse load types and ensures long service life with up to 20,000 mechanical operations.
Built in compliance with IEC 60898-1 standards, this compact MCB combines performance, safety, and ease of installation.
- Function:
- Protection against overload and short-circuit currents
- Switching and isolation capability
- 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 (3–5In): for long cables and resistive circuits
- C Curve (5–10In): for resistive and inductive loads
- D Curve (10–16In): for high inrush current loads (motors, transformers)
- Rated Breaking Capacity (Icu): 6kA
- Rated Insulation Voltage (Ui): 500V
- Rated Impulse Withstand Voltage (Uimp): 6kV
- Mechanical Life: 20,000 operations
- Electrical Life: 10,000 operations
- Connection Type: Top or bottom wiring
- Terminal Connection Type: Cable, U-type or pin-type busbar
- Terminal Size:
- Cable: up to 25mm² (AWG 18–4)
- Busbar: up to 10mm² (AWG 18–8)
- Tightening Torque: 2.0 N·m (22 in-lbs)
- Mounting: DIN rail EN 60715 (35mm)
- Protection Degree: IP20
- Pollution Degree: 3
- Operating Temperature: −35°C to +70°C
- Storage Temperature: −35°C to +70°C
- Reference Temperature: 30°C
- Accessories Compatible: S9, V9, XF9, XF9J, OVT-1, OUVT-1
- Dimensions (mm):
- Height: 86
- Width: 18 (1P), 36 (2P), 54 (3P), 72 (4P)
- Depth: 76.8
