Function and use
NM8N high voltage (HV) series plastic case circuit breaker, suitable for AC 50Hz/60Hz, rated voltage AC1140V and below, rated current 16A to 630A It can make, break and carry the rated operating current in the circuit, and can reliably protect the lines and electrical equipment when they are overloaded, short-circuited or under-voltage. It can also be used as infrequent starting and overload and short-circuit protection of the motor.
Detailed description
Parameters:
Rated working voltage: AC690V, 800V, 1000V, 1140V
Frame current: 250A, 400A, 630A
Using environment Temperature: -40°C~+80°C
Detailed parameters
< /tr>< /tr>
| Parameter classification | Parameter item | Parameter value |
|---|
| Product model | NM8N-250HV | |
| NM8 N-400HV | |
| NM8N-630HV | |
| Frame maximum rated current Rated operating current In (A), 40℃ | 16-20-32-40-50-63-80-100 | |
| 125-160-180-200-225-250* | |
| 250-315-350-400 | |
| 400-500-630 | |
| Rated insulation voltage Ue(V) | | 1250 |
| Rated impulse withstand voltage Rated operating voltage Ue(V) | | 690/800/1000/1140 |
| Number of poles | | 3P |
| Breaking capacity code | C | AC690V: 50, AC800V:36, AC1000V:15, AC1140V:10 |
| S | AC690V:80, AC800V:50, AC1000V:30, AC1140V:10 |
| Q | AC690V:100, AC800V:70, AC1000V:40, AC1140V:20 |
| Rated ultimate short circuit breaking capacity Icu(kA) | C | AC690V:50, AC800V:36, AC1000V:25, AC1140V:10 |
| S | AC690V:80, AC800V:50, AC1000V:35, AC1140V:10 |
| Q | AC690V:100, AC800V:75, AC1000V:50, AC1140V:35 |
| Rated operating short-circuit breaking capacity Ics(kA) | C | AC690V:50, AC800V:36, AC1000V:15, AC1140V:10 |
| S | AC690V:80, AC800V:50, AC1000V:15, AC1140V:10 |
| Q | AC690V:100, AC800V:75, AC1000V:50, AC1140V: 35 |
| Release type | | Thermal magnetic type, electromagnetic type |
| Mechanical life (times) | | 15000< /td> |
| | 15000 |
| | 10000 |
| | 15000 |
| Electrical life (times) | AC690V | - |
| AC800V | 1500 |
| AC1000V | 1000 |
| AC1140V | 1000 |
| Outline and installation dimensions (mm) | Width (W) | 106 |
| Height (H) | 200 |
| Deep(D) | 120 |
| | 140 |
| | 250 |
| | 205 |
| | 250 |
| | 150 |
| | 135 |
| | 135 |
