Function and Usage
The NB8LE-63M residual current operated circuit breaker is mainly applicable to the terminal distribution lines of commercial office buildings, residential buildings, and general industrial applications with AC 50Hz, rated voltage 230V, and rated current up to 63. It provides overload, short-circuit protection, and leakage protection for the lines, and can also perform non-frequent switching operations under normal conditions.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Product Model | | NB8LE-63M |
| Rated Current (A) | | 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated Residual Operating Current (mA) | General Type: | 0.01A, 0.03A, 0.05A, 0.075A, 0.1A, 0.3A |
| Delayed Type: | 0.05A, 0.075A, 0.1A, 0.3A |
| Leakage Protection Type | | A Type, AC Type |
| Operation Type | | General Type, Delayed Type |
| Rated Voltage (V) | | 230 |
| Rated Frequency (Hz) | | 50 |
| Pole Number | | 1P+N, 2P |
| Mechanical Life (Times) | | 20000 |
| Electrical Life (Times) | | 10000 |
| Rated Short Circuit Breaking Capacity (A) | | 10000 |
| Running Short Circuit Breaking Capacity (A) | | 10000 |
| Rated Insulation Voltage (V) | | 500 |
| Rated Impulse Withstand Voltage (1.2/50) (kV) | | 4 |
| Dielectric Test Voltage (V) | | (50Hz, 1 minute) 2000 |
| Humidity and Heat Resistance (GB/T2423.4: 55°C/90~96%, 25°C/95~100%) | | 28 Cycle Cycles |
| Vibration Resistance (IEC/EN60068-2-6) | | Places without significant vibration and impact |
| Wiring Terminal | Terminal Form | Frame Structure |
| Minimum Wire Cross-sectional Area (mm²) | 1 |
| Maximum Wire Cross-sectional Area (mm²) | 25 |
| Standard Connection Torque (N·m) | 2 |
| Maximum Torsion (N·m) | 3.5 |
| Wire Insertion Depth (mm) | 13 |
| Reference Temperature (°C) | | 30 |
| Operating Environmental Temperature (°C) | | -35~+70 |
| Storage Environmental Temperature (°C) | | -35~+85 |
| Applicable Altitude (m) | | 2000 |
| Tripping Form | | Thermal Magnetic Tripping |
| Electromagnetic Tripping Type | B Type (3In~5In) | |
| C Type (5In~10In) | ■ |
| D Type (10In~16In) | ■ |
| Enclosure Flame Retardant Grade | | V0 |
| Input Method | | Top Input |
| Installation Method | | TH35-7.5 Standard Rail |
| Pollution Level | | 2 |
| Protection Level | Direct Installation | IP20B |
| Installed in Distribution Box | IP40B |
| Removable Accessories | | S9, V9, XF9, XF9J, OVT-1, OUVT-1 |
