Vacuum Circuit Breaker(VCB)12KV 24KV 36KV ZN12-40.5 indoor vacuum circuit breaker

ZN12-40.5 indoor medium voltage vacuum circuit breaker

 ZN12 (ZN72) -40.5 Indoor Vacuum Circuit Breaker 35KV three-phase AC 50HZ applied to power system,the circuit breaker for the ceramic structure, using the longitudinal magnetic field contacts, is small, the proliferation of breaking arc generated when current distribution in the contact on the same local melting phenomenon does not occur, but also has a low arc energy voltage (20-200V) and low chopping current (4-5A), and operate with high reliability organizations. 

The circuit breaker with spring energy storage sector, can exchange energy storage, or DC operation, can also be used manually. The circuit breaker uses a special contact material, so interrupter high breaking capacity, and has a long electrical life.

The switch of simple structure, open high capacity, long life operation of fully functional no explosion risk, maintenance is simple, suitable for power plants, substation control and distribution system, protection switching, particularly suitable for heavy duty and frequent breaking operation place.Can be used in the fixed ark XGN17-40.5, also can be in XGN2-40.5 type switchgear. 

Product feature 

1, ambient air temperature: cap + 40 °C, the minimum - 10 °C, high altitude to 25 °C

2, altitude, 1000 m;

3, relative humidity, daily average no greater than 95%; On the average no greater than 90%; (+ 25 °C); Saturated vapor pressure: daily average no greater than 2.2 x 10-3 mpa, on the average no greater than 1.8 x 10-3 mpa,

4, vibration f: earthquake intensity is not more than 8 degrees; 5, does not apply to inflammable and explosive dangerous, chemical etching and the site of violent vibration.

Technical specifications