Function and Application
The NB1LE-40 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 circuits, and can cut off the faulty power supply in a very short time when a person gets electrocuted or the leakage current of the power grid exceeds the specified value, thus protecting personal safety and electrical equipment. It also provides overload and short-circuit protection for the circuit, and can be used for infrequent switching of the circuit. The 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 certification.
Details Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| System Parameters | Rated Voltage (Up) | AC 230V (1P+N, 2P), AC 400V (3P, 3P+N, 4P) |
| Rated Current (In) | 6A, 10A, 16A, 20A, 25A, 32A, 40A |
| Rated Insulation Voltage (Ui) | 500V |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
| Rated Residual Operating Current (Imr) | 0.03A, 0.1A, 0.3A |
| Rated Non-operating Residual Current (Imnr) | 0.5IΔn |
| Residual Current Protection Type | AC Type |
| Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Copper Terminal Type | C Type |
| Rated Short Circuit Breaking Capacity (kA) | 6000A (NB/LE-60), 10000A (NB/LE-40H) |
| Residual Current Operation Characteristic Curve | See Table 2 |
| Overcurrent Protection Characteristic Curve | See Table 1 |
| Mechanical and Electrical Life | See Table 4 |
| Connecting Wires | See Table 5 |
| Torsional Torque | 2.0N·m |
| Outline Dimensions and Installation Dimensions | Figure 2, Figure 3 |
| Pollution Level | Level 2 |
| Protection Level | IP20 |
| Installation Category | Category III |
| Performance Indicators | Residual Current Operation Disconnection Time | |
| In(A) | IΔn(A) |
| | 0.03, 0.1, 0.3 IΔn 2IΔn 5IΔn 5A-200A* |
| 6-40 | 0.1 0.05 0.04 0.04 |
| Note: For testing above the residual current test, the leakage current is not tested according to the specification. | |
| Overcurrent Protection Characteristics (Reference Temperature 30°C) | |
| Serial Number | Rated Current A Initial State Test Current Specified Time Expected Result Notes |
| a | 6-40 Cold State 1.13In t≤1h No Tripping |
| b | 6-40 Immediately after the previous test 1.45In ≤1h Trip This value increases steadily within 5s and remains stable |
| c | In≤32 Cold State 2.55In 1s±1s Trip |
| d | In≤32 Cold State 2.55In 1s±120s Trip |
| e | 6-40 Cold State 5In t≤0.1s No Tripping |
| f | 6-40 Cold State 10In t≤0.1s Trip |
| Residual Current Characteristic Curve | |
| Figure 1 C Type | |
