Function and purpose
Integrate overload protection, short circuit protection, overvoltage protection, undervoltage protection, voltage loss protection, automatic closing, control, and multiple communication functions
Detailed description
Parameters:
Frame current: 250-800A
Maximum Icu: 70kA
Working voltage: AC230V/240V, 400V/415V, 500V, 690V
Using ambient temperature: -40°C~+70°C
Advantages/core functions:
01 Comprehensive functions
Has more than ten protection functions such as overload long delay, short circuit short delay, short circuit instantaneous, grounding protection, overvoltage, undervoltage, phase loss, and zero break
02 Safe and reliable
Double protective structure of upper and middle covers effectively prevents external factors such as static electricity from causing failure of electronic components
03 Intelligent operation and maintenance
With RS485, HPLC A variety of communication methods can be used remotely to achieve intelligent unattended operation
Detailed parameters
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| Parameter classification | Parameter item | Parameter value |
|---|
| Product model | NM3FC-250 | < /td> |
| NM3FC-400 | |
| NM3FC-6 30 | |
| NM3FC-800 | |
| Rated current In(A) | | 250, 400, 630, 800 |
| Number of poles | | 3P+N |
| Rated current Irn(A) | | 50, 63, 80, 100, 125, 160, 200, 250 |
| | 250, 300, 315, 400 |
| | 400, 500, 630 |
| | 630, 700, 800 |
| Rated operating voltage Ue(V) | | AC380, 400, 415 |
| Rated insulation voltage Ui(V) | | 1000 |
| Rated impulse withstand voltage Uimp(kV) | | 8 |
| | 12 |
| | 12 |
| | 12 |
| Rated operating frequency (Hz) | | 50 |
| Release type | | Electronic |
| Automatic tripping time (s) | | 20～60 |
| Applicable working environment temperature (℃) | | -25～+70 |
| Breaking capacity code | C | 36 |
| S | 50 |
| C | 36 |
| S | 50 |
| Q | 70 |
| C | 36 |
| S | 50 |
| 70 |
| C | 36 |
| S | 50 |
| Q | 70 |
| Rated ultimate short circuit breaking capacity Icu(kA) | | 36 |
| | 36 |
| | 36 |
| | 50 |
| | 36 |
| | 36 |
| | 50 |
| | 36 |
| |
| | 50 |
| | 70 |
| Rated operating short-circuit breaking capacity Ics(kA) | | 36 |
| | 36 |
| | 36 |
| |
| | 36 |
| | 36 |
| | 50 |
| < /td> | | 36 |
| | 36 |
| | 50 |
| | 70 |
| Usage category | | A |
| | B |
| | B |
| Rated short-time withstand current Icw, 1s(kA) | | 3 |
| | 5 |
| | 8 |
| | 10 |
| Mechanical life (times) | | 15000 |
| < /td> | 8000 |
| | 8000 |
| | 8000 |
| Electrical life (times) | | 4000 |
| | 3000 |
| | 3000 |
| | 2000 |
| Wiring method | | Top in and bottom out |
| Outline and installation dimensions (mm) | Width (W) | 142, 184, 184, 240 |
| High (H) | 235, 330, 330, 360 |
| Deep (D) | 101.5, 140.5, 140.5, 157 |
| Note: | 1. Can be customized to -40~+70℃, please contact local sales staff for details | |
| 2. 250A is not yet on the market. For specific needs, please contact the local sales staff | |
| 3. The top-in and bottom-out wiring methods can be customized. For details, please contact the local sales staff | |
