CHINT NB1-63 Miniature Circuit Breaker,
is designe for reliable overload and short-circuit protection in low-voltage electrical installations.
Compact and durable, it operates in AC 50/60 Hz, 230/400 V circuits,
with rated currents up to 63 A and a breaking capacity of 6 kA. Its B, C, and D tripping curves accommodate different load types,
while a long mechanical life ensures consistent performance in residential, commercial, and light industrial environments.
- Standards Compliance: IEC/EN 60898-1
- Function: Overload, short-circuit, and isolation protection
- Rated Voltage (Ue):
- 230 V~ for 1P
- 400 V~ for 2P, 3P, 4P
- Rated Frequency: 50/60 Hz
- Rated Current (In): 6, 10, 13, 16, 20, 25, 32, 40, 50, 63 A
- Rated Breaking Capacity (Icn): 6 kA
- Rated Short-circuit Service Capacity (Ics): 6 kA
- Rated Insulation Voltage (Ui): 500 V
- Rated Impulse Withstand Voltage (Uimp): 4,000 V (1.2/50 μs)
- Tripping Characteristics:
- B Curve: 3–5 In (resistive loads, lighting)
- C Curve: 5–10 In (mixed loads, motor circuits)
- D Curve: 10–14 In (high inrush loads, transformers)
- Mechanical Life: 20,000 operations
- Electrical Life: 4,000 operations
- Ambient Operating Temperature: –5 °C to +40 °C
- Storage Temperature: –25 °C to +70 °C
- Reference Temperature: 30 °C
- Temperature Derating Coefficients:
- 0.95 at 40 °C
- 0.90 at 50 °C
- 0.85 at 60 °C
- Altitude Limit: ≤ 2000 m
- Mounting: TH35-7.5 DIN rail
- Connection: Top or bottom feed
- Terminal Capacity: 1–25 mm² (cable)
- Tightening Torque: 2.0 N·m
- Pollution Degree: 2
- Protection Degree: IP20
- Compatible Accessories:
- AX-5 (auxiliary contact)
- AL-X3 (alarm contact)
- SHT-X3 (shunt release)
- UVT-X3 (undervoltage release)
- Dimensions (mm):
- Height: 82
- Depth: 75.5
- Width: 18 mm per pole
