Function and Application
NB1LE-63 □ residual current device is suitable for AC 50Hz, rated voltage single-pole two-wire, two-pole 230V, three-pole, three-pole four-wire, four-pole 400V, rated current up to 63A circuits. When a person is electrocuted or the grid leakage current exceeds the specified value, the residual current device can automatically cut off the power supply within a very short time to ensure personal safety and prevent accidents caused by leakage current in equipment. The residual current device also has overload and short-circuit protection functions, which can be used to protect against circuit overloads and short circuits, and can also be used for non-frequent switching of circuits under normal conditions. Conforms to the standard: GB/T 16917.1, IEC 61009-1, and has obtained CCC certification.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| System Parameters | Rated Voltage (UC) | AC 230V (1P+N, 2P), AC 400V (3P, 3P+N, 4P) |
| Rated Current (In) | 50A, 63A |
| Rated Limiting Short-Circuit Current (Icu) | 50kA |
| Rated Limiting Short-Circuit Closing Capacity (Icm) | 4kA |
| Rated Limiting Short-Circuit Breaking Capacity (Icn) | 0.03 |
| Rated Limiting Short-Circuit Closing Capacity (Inm) | 0.05kA |
| Residual Current Protection Function | AC Type |
| Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Residual Current Tripping Form | C Type |
| Rated Residual Current Breaking Capacity (In) | 6300A (NB1L-E63), 10000A (NB1L-E63H) |
| Rated Limiting Short-Circuit Closing Capacity (Inm) | 500A (n=50A); 630A (n=63A) |
| Overcurrent Protection Characteristics | Conforms to 3, Figure 1 |
| Mechanical and Electrical Life | Conforms to 4 |
| Wiring Conductors | Total 5 |
| Wiring Torque | 2.0N·m |
| Dimensions and Installation Dimensions | See Figure 2, Figure 3 |
| Installation Method | 2 positions |
| Protection Level | IP20 |
| Installation Category | Category III |
| Performance Indicators | | |
| Residual Current Operation Time | |
| In(A) | IΔn(mA) |
| 50, 63 | 0.03 |
| | 0.1 |
| | 0.05 |
| | 0.04 |
| | 0.04 |
| | 0.04 |
| Residual Current Device Residual Current Characteristics (Reference Temperature 30℃) | |
| Serial Number | Rated Current (In) Start State Test Current Specified Time Expected Result Notes |
| a | 50, 63 Cold State 1.13In t≤1s No Trip |
| b | 50, 63 Immediately after test a 1.45In t≤1s Trip |
| c | 50, 63 Cold State 2.5In 1s≤t≤120s Trip |
| d | 50, 63 Cold State 10In t≤0.5s No Trip |
| Tripping Characteristic Curve | |
