| System Parameters | Rated Voltage (UC) | AC 230V (1P+N, 2P), AC 400V (3P, 3P+N, 4P) |
| Rated Current (In) | 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A |
| Rated Insulation Voltage (Ui) | 690V |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
| Rated Residual Operating Current (IΔn) | 0.03A, 0.1A, 0.3A |
| Rated Residual Non-operating Current (IΔno) | 0.5IΔn |
| Residual Current Protection Type | AC type, A type |
| Number of Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Rated Making and Breaking Capacity (Icn) | 6500A (NB1L-40); 10000A (NB1L-40H) |
| Rated Residual Making and Breaking Capacity (IΔn) | 500A |
| Performance Indicators | Residual Current Trip Characteristics | Table 2 |
| Overcurrent Protection Characteristics | Table 3, Figure 1, Figure 2 |
| Cable Cross-sectional Area | See Table 5 |
| Wire Terminal Torque | 2.0 Nm |
| Dimensions and Installation Dimensions | Figure 3, Figure 4 |
| Installation Method | 2 pieces |
| IP Protection Rating | IP20 |
| Installation Environment | -10℃～+40℃ |
| Parameter Category | Parameter Item | Parameter Value |
| 3.1 Residual Current Trip Time | In(A) | 1.0mA, 0.1mA, 0.05mA, 5.0mA, 5A-200A*, 1A* |
| IΔn(mA) | 0.03, 0.1, 0.3 |
| Multiples of Rated Residual Operating Current | 1.0, 2.1, 5.0, 0.04, 0.04, 0.04 |
| Trip Time(s) | 1.13s, 1.45s, 2.55s, 2.55s, <0.1s, <0.1s |
| Parameter Category | Parameter Item | Parameter Value |
| 3.2 Overcurrent Protection Characteristics (Reference Temperature 30℃) | Serial Number | a, b, c, d, e |
| Type | C, D; C, D; C, D; C, D; C, D |
| Set Current (In) | 1~40; 1~40; In ≥ 32; In ≥ 32; 1~40 |
| Starting Condition | Cold State; Cold State; Hot State; Cold State; Cold State |
| Temperature Current | 1.13In; 1.45In; 2.55In; 2.55In; 10In; 14In |
| Preset Time | t ≤ 1h; t ≤ 1h; t ≤ 20s; t ≤ 0.1s; t ≤ 0.1s |
| Detection Result | No Trip; Trip; Trip; No Trip; Trip |
| Notes | The current stabilizes and displays the specified value within 5 seconds |
| Parameter Category | Parameter Item | Parameter Value |
| 3.3 Trip Characteristic Curve | Figure 1: C Type | Action Time (s) vs. I/In Curve |
| Figure 2: D Type | Action Time (s) vs. I/In Curve |
| Parameter Category | Parameter Item | Parameter Value |
| 3.4 Mechanical and Electrical Life | Item | Electrical Life |
| | 2000 times (co<sub>2</sub>=0.85~0.9) |
| | 20000 times |
| Operating Frequency | In < 25A, 240 times/hour; In > 25A, 120 times/hour |
| Parameter Category | Parameter Item | Parameter Value |
| 4 Other | 4.1 The NB1L-40 residual current circuit breaker is composed of the NB1-63 miniature circuit breaker and residual current trip unit. It has the following features: | |
| 4.1.1 No auxiliary power supply is required, overcoming the shortcomings of poor interference resistance of electronic products, large influence by grid voltage fluctuations, and the defect of neutral line contact problems, expanding the range of residual current protection. | |
| 4.1.2 High rated short-circuit breaking capacity. | |
| 4.1.3 The test circuit has low dynamic resistance, which is not easy to burn out the test resistor. | |
| 4.1.4 The operating mechanism is designed as a stored energy mechanism, storing energy for the moving contact during the closing operation, allowing the moving contact to close rapidly, thus improving the service life of the moving contact and the breaking capacity of the product. | |
