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Ningbo Mingde Electrical Science&Technology Co.,Ltd
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Click to enlarge image
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Origin |
China |
Brand Name |
MINGDE |
name |
circuit breaker |
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ZN12-40.5Vacuum Circuit Breaker |
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This is our independent researching and developing products, have passed type approval test, moreover,it mechanical life over 60000 times,gets a national leading level.
Technical Parameter
Rated voltage: 40.5 kV
| Rated current |
A |
1250 |
1600 |
2000 |
1250 |
1600 |
| Rated short breaking current |
kA |
20 25 |
31.5 |
| Dynamic current |
kA |
50 63 |
80 |
| 3s thermal arrest current |
kA |
20 25 |
31.5 |
| Rated short circuit making current(peak) |
kA |
50 63 |
80 |
| Breaking times at rated short-circuit current |
time |
30 |
20 |
| Rated operating order |
ã |
ã |
| Rated lightning impulse withstand voltage |
kV |
180 |
| Frequency withstand voltage at short time(1min) |
kV |
95 |
| Making time |
ms |
â¦90 |
| Breaking times |
ms |
â¦75 |
| Mechanical life |
time |
20000 |
10000 |
| Breaking times at rated current |
time |
20000 |
10000 |
| Rated breaking current of capacitor bank |
A |
630 |
| Power of energy stored motor |
W |
275 |
| Rated voltage of energy stored motor |
V |
110V - 220V |
| energy stored time |
S |
â¦15 |
| Rated voltage of making and tripping electromagnet |
V |
110V - 220V |
| Rated current of overcurrent release |
A |
5 |
| Rated voltage of pilot switch |
A |
AC10A DC5A |
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