Function and Application
The NH9-32 isolating switch (hereinafter referred to as the switch) is suitable for AC 50Hz, rated voltage up to 400V, and rated current of 32A circuits. It is mainly used for switching resistive loads, including appropriate overload, for isolation from the power source. The switch can carry the current under normal circuit conditions, as well as non-normal circuit conditions (short-circuit current) within a certain period of time; it can also occasionally connect and disconnect the rated current under normal conditions (including connecting and disconnecting appropriate overloads), but it cannot be used to disconnect fault current. It conforms to the standards GB/T 14048.3 and IEC 60947-3, and has obtained CCC, CE, and SEMKO certifications.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| 3.1 Classification | 3.1.1 By rated current le: | 32A. |
| 3.1.2 By pole number: | 1P, 2P, 3P, 4P. |
| 3.2 Main Technical Parameters | 3.2.1 Rated insulation voltage Ui: | 500V AC. |
| 3.2.2 Rated operating voltage Ue: | 230V AC (1P), 400V AC (2P, 3P, 4P). |
| 3.2.3 Rated operating current le: | 32A. |
| 3.2.4 Rated impulse withstanding voltage Uimp: | 4kV (2000m). |
| 3.2.5 Rated short-time withstand current Icw: | 12le, energized time 1s. |
| 3.2.6 Rated making and breaking capacity: | 3le, 1.05Ue, cosΦ=0.65. |
| 3.2.7 Rated short-circuit making capacity Icm: | 20le, energized time 0.1s. |
| 3.2.8 Mechanical and Electrical Life: | Mechanical life 8500 times, electrical life 1500 times. |
| 3.2.9 Installation copper wire selection (see Table 1): | |
| Rated operating current le(A) | 32 |
| Copper wire nominal cross-sectional area (mm²) | 6 |
