Function and use
NB5-63HFB small circuit breaker is mainly suitable for power line facilities and electrical equipment in industrial equipment and similar places with AC 50Hz, rated voltage 230V, 400V, and rated current up to 63A. It provides overload and short-circuit protection for the line, and can also perform infrequent switching operations on the line under normal circumstances.
Detailed description
Parameters:
Rated operating current: 1-63A
Rated breaking capacity: 6kA
Rated impulse withstand voltage: 6kV
Using ambient temperature: -35°C~+70°C
Detailed parameters
< td>Operating short-circuit breaking capacity Ics(A)
Parameter classification th> | Parameter item | Parameter value |
|---|
| Product model | NBS-63HFB |
| Rated parameter | Rated current Ia (A) | 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated voltage Ue(V) | AC230/400(1P)
AC230(1+N)
AC400(2P, 3P, 3P+N, 4P) |
| Rated frequency (Hz) | 50 |
| Number of poles | 1P, 1P+N, 2P, 3P, 3P+N, 4P |
| Mechanical and electrical life | Mechanical life (times) | 4000 |
| Electrical life (times) | 4000 |
| Short circuit breaking capacity | Rated short circuit breaking capacity Icn(A) | 10000 |
| 7500 |
| Rated insulation voltage Ui (V) | 500 |
| Rated impulse withstand voltage Uimp (kV) | 4 |
| Dielectric test voltage (V) | 2000 (50Hz, 1 minute) |
| Anti-vibration | | Where there is no obvious vibration and impact |
| Terminal block | Minimum connectable conductor cross-sectional area (mm²) | 1 |
| Maximum connectable conductor cross-sectional area (mm²) | 25 |
| Standard connection torque (N·m) | 2.0 |
| Maximum bearable Torque (N·m) | 2.5 |
| Wire insertion depth (mm) | 13 |
| Reference temperature | | 30 |
| Working ambient temperature | | -35~+70 |
| Storage ambient temperature | | -35~+85 |
| Applicable altitude | | ≤2000 |
| Tripping form | | Thermal magnetic tripping |
| Instant tripping type | Type B (3ln~5ln) | ■ |
| Type C (5ln~10ln) | ■ |
| Type D (10ln~16ln) | |
| Wire entry method | | Both up and down |
| Installation method | | TH35-7.5 standard guide rail |
| Pollution level | | 2 |
| Protection Level | Direct installation | IP20 |
| Installed in distribution box | IP40 |
| Assemblyable accessories | | AX-B5, AL-B5, SHT-B5, OVT-B5, UVT-B5, OUVT-B5 |
