Function and Usage
The NB5LE-63FB residual current operated circuit breaker is suitable for AC 50Hz, rated voltage 230V, 400V, and rated current up to 63A circuits, providing overload, short-circuit, and residual current protection. It can also be used for infrequent switching in normal conditions.
Detailed Description
Parameters:
Rated operating current: 6-63A
Rated breaking capacity: 6kA
Rated insulation voltage: 500V
Operating environmental temperature: -35°C~+70°C
Detail Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| System Parameters | Product Model | NB5LE-63FB |
| Rated Current In(A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated Voltage Ue(V) | AC230(1P+N, 2P), AC400(3P, 3P+N, 4P) |
| Rated Frequency (Hz) | 50 |
| Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Mechanical Life (Times) | 4000 |
| Electrical Life (Times) | 4000 |
| Rated Short Circuit Breaking Capacity Icn(A) | 6000 |
| Running Short Circuit Breaking Capacity Isc(A) | 6000 |
| Rated Insulation Voltage Ui(V) | 500 |
| Rated Impact Withstand Voltage Uimp(kV) | 4 |
| Rated Residual Current IΔn (mA) | AC Type: 30, 50, 100, 300 A Type: 30, 100, 300 |
| Residual Current Protection Type | AC Type, A Type |
| Tripping Mechanism Action Type | Electronic Type |
| Dielectric Test Voltage (V) | 2000(V50Hz, 1 minute) |
| Vibration Resistance (IEC/EN 6068-2-6) | No significant vibration and impact places |
| Wiring Terminal | Minimum Wire Cross-sectional Area (mm²) | 1 |
| Maximum Wire Cross-sectional Area (mm²) | 25 |
| Standard Connection Torque (N·m) | 2.0 |
| Maximum Allowable Torque (N·m) | 2.5 |
| Wire Insertion Depth (mm) | 13 |
| Reference Temperature (℃) | 30 |
| Operating Environmental Temperature (℃) | +35~+70 |
| Storage Environmental Temperature (℃) | +35~-85 |
| Applicable Altitude (m) | ≤2000 |
| Tripping Form | Thermal-magnetic Tripping |
| Instantaneous Tripping Type | B Type (3ln~5ln) ■
C Type (5ln~10ln) ■
D Type (10ln~16ln) ■ |
| Wiring Method | Top Entry |
| Installation Method | Installation Method | TH35-7.5 Standard Rail |
| Pollution Degree | 2 |
| Protection Level | IP20 |
| Installed in Distribution Box | IP40 |
| Removable Accessories | Removable Accessories | AX-B5, AL-B5, SHT-B5, OVT-B5, UV-TB5, OUVT-B5 |
