General

CA-ZN85-33 series vacuum circuit breaker is a new type of three-phase 50Hz according to the unique design concept and combined with the market demand and development, the rated voltage of indoor switchgear 33-40.5kV, it can be provided to industrial and mining enterprises, powerplant and substation as the control and protection of electrical equipment,and is suitable for frequent operation.

Advantages

ZN85-33 Vacuum circuit-breakers have particular advantages for use in networks where there is a high switching frequency in the working current range and/ or where a certain number of short- circuit breaking operations are expected. CA-ZN85-40.5 vacuum circuit- breakers are suitable for auto reclosing and have exceptionally high operating reliability and long life. The circuit- breakers are notable for their compact design, small dimensions together with high capacity. The operating mechanisms have a low maintenance requirement and the interrupters are maintenance- free throughout their service lives. They are well suited to all load breaking operations which occur in practice, and in particular:

◇ Short-circuit currents;
◇ Overhead lines under load and, no-load conditions;
◇ Cables under load and no-load conditions;
◇ Transformers under load and no-load conditions;
◇ Generators under load and no-load conditions;
◇ Ripple control system;
◇  Capacitor banks(also parallel switching) and Motors with starting currents above 600A;