Function and Use
The NB1LG-40 residual current circuit breaker is suitable for AC 50Hz, rated voltage single-pole two-wire, two-pole 230V, rated current up to 40A circuits. When a person is electrocuted or the power grid leakage current or voltage exceeds the specified value, the residual current circuit breaker can quickly cut off the faulty power supply within an extremely short time to protect personal safety and electrical equipment. It can also protect against line overload or short circuit, and can be used for infrequent switching of the line. The product is suitable for various places such as industry, commerce, high-rise buildings, and residential buildings. It 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 (Up) | AC 230V (P+N, 2P) |
| Rated Current (In) | 6A, 10A, 15A, 20A, 25A, 32A, 40A |
| Rated Insulation Voltage (Ui) | 500V |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
| Rated Residual Operating Current (IΔn) | 0.03A |
| Rated Non-operating Residual Current (IΔno) | 0.5IΔn |
| Number of Poles | 1P+N, 2P |
| Type of Residual Trip Unit | C Type |
| Rated Short Circuit Breaking Capacity (Icn) | 6000A |
| Rated Residual Make and Break Capacity (IΔm) | 500A |
| Rated Residual Operating Disconnection Time (tΔ) | ≤0.1s |
| Overvoltage Protection | 280V~415V |
| Overcurrent Protection Characteristics | Switch 3, Trip 1 |
| Mechanical and Electrical Life | ≥40000 times |
| Communication Interface | RS485 |
| Storage Torque | 2.0N·m |
| Outline Dimensions and Installation Dimensions | See Figure 2, Figure 3 |
| Protection Level | IP20 |
| Installation Method | Rail Mounting |
