Function and Usage
The NH4-125 isolating switch (hereinafter referred to as the switch) is applicable to AC 50Hz, rated current up to 125A, rated voltage up to 400V distribution and control circuits, mainly as the main switch in terminal combined electrical appliances, and can also be used for infrequent control of various small power electrical appliances and lighting. It is widely applied in industrial and mining enterprises, high-rise buildings, commercial and residential areas. It conforms to the standards: GB/T 14048.3, IEC 60947-3, and has obtained CCC, CE, SEMKO, EAC, VDE, SAA certifications.
Detailed Parameters
| Parameter Classification | Parameter Item | Parameter Value |
|---|
| 3.2 Main Technical Parameters: | Rated Insulation Voltage Ui | AC 400V |
| Rated Operating Voltage Ue | 230V AC (1P), 400V AC (2P, 3P, 4P) |
| Rated Operating Current Ie | 32A, 63A, 100A, 125A |
| Rated Impulse Withstand Voltage Uimp | 4kV (2000m) |
| Rated Short-Time Withstand Current Icw | 12Ie, energized time 1s |
| Rated Making and Breaking Capacity | 3Ie, 1.05Ue, cosΦ=0.65 |
| Rated Short-Circuit Making Capacity Icm | 20Ie, energized time 0.1s |
| Mechanical and Electrical Life | Mechanical life 8500 times, electrical life 1500 times |
| Installation Copper Conductor Selection | See Table 1 |
| Parameter Classification | Parameter Item | Parameter Value |
| Rated Operating Current Ie(A) | Copper Conductor Nominal Cross-Sectional Area (mm²) |
| 32 | 6 |
| 63 | 16 |
| 100 | 35 |
| 125 | 50 |
