Function and use
NM3DC high voltage (HV) series DC plastic shell circuit breaker is suitable for making, breaking and carrying rated operating current in circuits with rated voltage DC1500V and rated current up to 630A and below, and can reliably protect lines and electrical equipment when they are overloaded or short-circuited.
Detailed description
Parameters:
Rated operating voltage: DC1500V
Frame current: 400A, 630A
Using ambient temperature: -40°C~+70°C
Detailed parameters
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| Parameter classification | Parameter item | Parameter value |
|---|
| Product model | | NM3DC-400, NM3DC-630 |
| Case leakage current Iu(A) | | 400, 630 |
| Number of poles | | 2P |
| Rated current In(A) | | 200, 225, 250, 280, 315, 350, 400, 400, 450, 500, 630 |
| Stable ground voltage Ue(V) | | 1600 |
| Stable impulse withstand voltage Uimp(kV ) | | 12 |
| Stable operating voltage Ue(V) | | DC1500 |
| Polar form | | Thermal form |
| Usage category | | A |
| Protection function | Long-term protection of Icu(A) | 1 |
| Short-term protection of Ics(A) | 5, 10 |
| Isolation function | Yes |
| Working environment temperature (℃) | | -40 ~ +75 |
| Resolution code | | F, E, F, E |
| Rated ultimate short-circuit breaking capacity Icu(A) 2-pole connection | 15 (t=10ms), 25 (t=5ms), 15 (t=10ms), 25 (t=5ms) |
| Rated operating short-circuit breaking capacity Ics (A) 2-pole connection | 15 (t=10ms), 25 (t=5ms), 15 (t=10ms), 25 (t=5ms) |
| Mechanical life (times) | | 10000 |
| Electrical life (times) | | 1000 |
| External Shape and installation dimensions (mm) | Width (W) | 98 |
| Height (H) | 275 |
| Depth (D) | 124, 130.4, 124, 130.4 |
