CHINT NB5LE Residual Current Operated Circuit Breaker,
with Over-current Protection (Electronic) provides comprehensive protection against overload,
furthermore short-circuit, and residual current faults in AC circuits up to 400 V and 63 A.
Featuring Type B residual detection and electronic tripping technology,
in addition it ensures reliable operation for both AC and pulsating DC leakage currents.
afterward With 6–10 kA breaking capacity, wide tripping curves,
and compact DIN-rail design, the NB5LE is ideal for smart electrical systems,
finally offering enhanced safety and precision for residential, commercial, and industrial power networks.
- Standard: IEC/EN 61009-1
- Certifications: CE, RoHS
- Rated Current (In): 6, 10, 16, 20, 25, 32, 40, 50, 63 A
- Rated Voltage (Ue): AC 230 V (1P+N, 2P) / AC 400 V (3P+N)
- Rated Frequency: 50/60 Hz
- Number of Poles: 1P+N / 2P / 3P+N
- Tripping Technology: Electronic (thermomagnetic release)
- Leakage Detection Type: Type B
- Tripping Curves:
- C curve (5–10 In): for resistive and inductive loads
- D curve (10–16 In): for high inrush current loads (motors, transformers)
- Rated Short-Circuit Breaking Capacity (Icn):
- NB5LE-63/B: 6 kA
- NB5LE-63H/B: 10 kA
- Rated Service Short-Circuit Capacity (Ics):
- NB5LE-63/B: 6 kA
- NB5LE-63H/B: 7.5 kA
- Rated Insulation Voltage (Ui): 500 V
- Rated Impulse Withstand Voltage (Uimp): 4 kV
- Rated Residual Operating Current (IΔn): 30 / 100 / 300 mA
- Dielectric Strength: 2000 V (50 Hz, 1 min)
- Mechanical Life: 20,000 operations
- Electrical Life: 10,000 operations
- Operating Temperature: −35 °C to +70 °C
- Storage Temperature: −35 °C to +85 °C
- Altitude: ≤ 2000 m
- Terminal Capacity: 1–25 mm²
- Tightening Torque: 2 N·m (max 2.5 N·m)
- Wire Insertion Depth: 12 mm
- Mounting: Standard 35 mm DIN rail (TH35-7.5)
- Connection: Top feed (standard)
- Protection Degree: IP20
- Pollution Degree: 2
- Vibration Resistance: IEC/EN 60068-2-6 compliant
- Dimensions (mm):
- 1P+N: 54 (L) × 78 (H) × 89 (D)
- 2P: 72 (L)
- 3P+N: 117 (L)
