Function and Usage
The NH3-63 isolating switch (hereinafter referred to as the switch) is suitable for AC 50Hz, rated voltage 230V, and rated current up to 63A circuits. It is mainly used to connect or disconnect the circuit under no-load conditions, for connecting or isolating the line and power supply. It is especially suitable for effectively isolating the power supply during line maintenance and preventing accidental closing to ensure the safety of maintenance personnel. It conforms to the standards: GB/T 14048.3, IEC 60947-3, and has obtained CCC certification.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| System Parameters | Rated Insulation Voltage U<sub>i</sub> | 500V AC |
| Rated Operating Voltage U<sub>e</sub> | 230V(1P, 2P), 400V(3P) |
| Rated Operating Current I<sub>e</sub> | 32A, 63A |
| Rated Impulse Withstand Voltage U<sub>imp</sub> | 4kV(2000m) |
| Performance Specifications | Rated Short-Time Withstand Current I<sub>cw</sub> | 12I<sub>e</sub>, energized time 1s |
| Rated Making and Breaking Capacity | 3I<sub>e</sub>, 1.05U<sub>e</sub>, cosΦ=0.65 |
| Rated Short-Circuit Making Capacity I<sub>cm</sub> | 20I<sub>e</sub>, energized time 0.1s |
| Mechanical and Electrical Life | Mechanical life 8500 times, electrical life 1500 times |
| Installation | Selection of Copper Conductor Installation | See Table 1 |
| Copper Conductor Nominal Cross-sectional Area (mm<sup>2</sup>) | |
| | 32A corresponds to 6 mm<sup>2</sup> |
| | 63A corresponds to 16 mm<sup>2</sup> |
