Function and Usage
The NB1L-63 residual current circuit breaker is suitable for AC 50Hz, rated voltage single-pole two-wire, two-pole 230V, three-pole, three-pole four-wire, four-pole 400V, and the line with rated current up to 63A. When a person gets electrocuted or the grid leakage current exceeds the specified value, the residual current circuit breaker can quickly cut off the faulty power supply in an extremely short time, protecting personal safety and electrical equipment, and also providing overload and short-circuit protection for the line. It can also be used for infrequent switching of the line. This product is applicable to various places such as industry, commerce, high-rise buildings, and residential buildings. It complies with the standards GB/T 16917.1 and IEC 61009-1, and has obtained CCC, CE, and SEMKO certifications.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| System Parameters | Rated Voltage (Ue) | AC 230V (IP+N, 2P), AC 400V (3P, 3P+N, 4P) |
| Rated Current (In) | 50A, 63A |
| Rated Insulation Voltage (Ui) | 500V |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
| Rated Residual Operating Current | 0.03A, 0.1A, 0.3A |
| Rated Non-operating Residual Current | 0.15A |
| Residual Current Trip Type | AC Type |
| Number of Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Residual Current Tripping Form | C Type |
| Residual Current Breaking Capacity (IΔn) | 6000A |
| Residual Current Protection and Breaking Capacity (IΔm) | 500A (A≤50A); 630A (A>63A) |
| Total Switching Time for Residual Current | See Table 2 |
| Performance Indicators | Overcurrent Protection Characteristics | See Table 3, Figure 1 |
| Mechanical and Electrical Life | See Table 4 |
| Insulated Wires | See Table 5 |
| Dimensions and Installation Dimensions | See Figure 2, Figure 3 |
| Pollution Level | Level 2 |
| Protection Level | IP20 |
| Installation Category | Category II |
| Communication | | |
| Protection Functions | | |
| Installation | | |
