CHINT NB1-63G Miniature Circuit Breaker,
offers reliable overload and short-circuit protection for residential, commercial, and industrial electrical systems.
With up to 6 kA breaking capacity and B/C tripping characteristics,
it ensures high safety and dependable performance. Its compact DIN-rail design, color-coded status indicator,
and trip-free mechanism make it ideal for modern distribution panels.
Compliant with IEC/EN 60898-1, the NB1-63G combines safety, durability, and easy installation in one efficient MCB.
- Standard: IEC/EN 60898-1
- Rated Voltage (Ue): AC 230/400 V
- Rated Insulation Voltage (Ui): 500 V
- Rated Frequency: 50/60 Hz
- Rated Current (In): 1–63 A
- Rated Short-Circuit Breaking Capacity (Icu): 6,000 A
- Tripping Characteristics: Type B (3–5 In) / Type C (5–10 In)
- Energy Limiting Class: 3
- Rated Impulse Withstand Voltage (Uimp): 4 kV
- Dielectric Test Voltage (1 min): 2 kV
- Thermal Element Reference Temperature: 30 °C
- Ambient Operating Temperature: −5 °C to +40 °C (storage −25 °C to +70 °C)
- Mechanical Life: 20,000 operations
- Electrical Life: 4,000 operations
- Mounting: DIN-rail EN 60715 (35 mm)
- Connection: Top or bottom feed
- Terminal Type: Cable / U-type busbar / Pin-type busbar
- Terminal Size: Up to 25 mm² (busbar) | 10 mm² (cable)
- Tightening Torque: 2.5 N·m
- Protection Degree: IP20
- Auxiliary Accessories: Shunt release, under-voltage release, alarm, auxiliary contact
- Power Loss (per pole): Max. 5 W
- Contact Position Indicator: Color-coded for clear ON/OFF status
- Trip-Free Mechanism: Prevents manual locking during fault conditions
