Function and Usage
The NB8LE-63YH residual current circuit breaker is mainly applicable to the terminal distribution lines of commercial office buildings, residential buildings, and general industrial applications with an AC frequency of 50Hz, rated voltage up to 230V, and rated current up to 63A. It provides overload, short-circuit protection, and residual current protection for the circuit, and can also be used for infrequent switching operations under normal conditions.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Product Model | | NBBLE-63YH |
| Rated Current (A) | | 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated Residual Current (mA) | | 10, 30, 50, 75, 100, 300 |
| Residual Current Protection Type | | Type A, Type AC |
| Action Type | | General Type |
| Rated Voltage (V) | | AC320 |
| Rated Frequency (Hz) | | 50 |
| Pole Number | | 1P+N |
| Mechanical Life (Times) | | 20000 |
| Electrical Life (Times) | | 10000 |
| Rated Short-Circuit Breaking Capacity (A) | | 6000 |
| Operating Short-Circuit Breaking Capacity (A) | | 6000 |
| Rated Insulation Voltage (V) | | 500 |
| Rated Impulse Withstand Voltage (1/50) (kV) | | 4 |
| Dielectric Test Voltage (V) | | 2000 (50Hz, 1 minute) |
| Moisture Resistance (GB/T 2434.4-55%, 90~96%, 25℃/95~100%) | | 28 Cycles |
| Vibration Resistance (IEC/EN 60068-2-6) | | Places without significant vibration and impact |
| Overvoltage Protection Range | | 280V ±5% |
| Terminal Block | Terminal Block Type | Column Terminal Block |
| Minimum Conductor Cross-sectional Area (mm²) | 1 |
| Maximum Conductor Cross-sectional Area (mm²) | 25 |
| Standard Connection Torque (N·m) | 2.5 |
| Maximum Allowable Torque (N·m) | 3.5 |
| Conductor 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 Mechanism | | Thermal-magnetic Tripping |
| Electromagnetic Tripping Type | B Type (3ln~5in) | ■ |
| C Type (5in~10in) | ■ |
| D Type (10in~16in) | ■ |
| Enclosure Flame Retardant Rating | | V-0 |
| Wiring Method | | Top Entry |
| Installation Method | | TH35-7.5 Standard Rail |
| Pollution Level | | 2 |
| Protection Level | Direct Installation | IP20B |
| Installation in Distribution Box | IP40B |
| Modular Accessories | S9, V9, XF9, XF9J, OVT-1, OUVT-1 | |
