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The product model of the 12KV withdrawable indoor circuit breaker is ZN63(VS1)-12. The product features an integrated operating mechanism and circuit breaker, and the main circuit can utilize a fully encapsulated pole assembly to achieve miniaturization, high reliability, and maintenance-free operation. It can be used with medium-voltage switchgear such as the KYN28 series.
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Rated voltage |
12KV/17.5KV |
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Rated frequency |
50Hz |
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Rated lightning impulse withstand voltage (peak value) |
75kV |
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Rated short-time power frequency withstand voltage (1 min) |
42kV |
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Rated current |
630/1250A |
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Rated short-circuit breaking current |
20/25kA |
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Rated short-circuit making current (peak value) |
50/63kA |
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Rated short-time withstand current and duration |
20/4kA/S |
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Rated short-circuit breaking current and number of breaking operations |
30 times |
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Closing time |
35-70ms |
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Opening time (of the circuit breaker) |
20-50ms |
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Mechanical life |
10,000 times |
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Rated energy storage capacity and operating voltage |
AC220/110V DC220/110V |
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Average closing speed |
0.5-0.8m/s |
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Average switching speed |
0.9-1.2m/s |
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Contact gap |
11±1mm |
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Contact overtravel |
3.5±0.5mm |
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Contact closing bounce time |
≤ 2m/s |
1.The operating temperature range is -10℃ to 40℃, and storage and transportation are permitted at -30℃;
2. The operating altitude should not exceed 1000m. If the altitude increases, the rated insulation level should be increased accordingly;
3. The applicable seismic intensity level should not exceed magnitude 8;
4. 12kV Withdrawable Indoor Circuit Breaker is suitable for locations free from fire, explosion, severe pollution, chemical corrosion, and violent vibration.
Address
Jinlu Industrial Zone, Beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province, China
