CHINT NBH8 Miniature Circuit Breaker (MCB),
it is engineere to protect electrical circuits against overload and short-circuit currents while ensuring safe isolation and switching.
Designe for residential and commercial power distribution, it features B and C tripping curves,
supports 230/240V AC systems, and offers breaking capacities of 4.5kA or 6kA. Compact,
reliable, and fully compliant with IEC/EN 60898-1, the NBH8 guarantees long mechanical endurance and stable protection performance.
- Function: Circuit protection from overload and short-circuit faults; suitable for isolation and switching
- Standard Compliance: IEC/EN 60898-1
- Rated Current (In): 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A
- Rated Voltage (Ue): 230/240V AC
- Rated Insulation Voltage (Ui): 500V
- Rated Frequency: 50/60Hz
- Rated Breaking Capacity (Icu): 4.5kA or 6kA
- Rated Impulse Withstand Voltage (Uimp): 4kV
- Dielectric Strength: 2500V for 1 minute
- Tripping Curves:
- B curve (3–5 In) for resistive loads and long cables
- C curve (5–10 In) for inductive loads and low inrush current circuits
- Energy Limiting Class: 3
- Mechanical Life: 20,000 operations
- Electrical Life: 10,000 operations
- Number of Poles: 1P+N
- Contact Position Indicator: Yes
- Protection Degree: IP20
- Ambient Operating Temperature: −5°C to +40°C (average ≤35°C)
- Storage Temperature: −25°C to +70°C
- Terminal Connection Type: Cable or pin-type busbar
- Terminal Size:
- Cable: 16mm²
- Busbar: 10mm²
- Tightening Torque: 2.0 N·m (18 in·lbs)
- Mounting: 35mm DIN rail (EN 60715) with fast clip device
- Connection: From top or bottom
- Auxiliary Accessories:
- Auxiliary contact
- Shunt release
- Under-voltage release
- Alarm contact
- Temperature Derating: Reference temperature 30°C; includes correction factors for ambient range −25°C to +70°C
- Dimensions (mm): 44(W) × 86(H) × 60.7(D)
- Weight: Approx. 120g
