Vacuum Circuit Breaker(ZW32-12)

Vacuum Circuit Breaker ZW32-12 General Vacuum Circuit Breaker(ZW32-12)are used for switching on\off load current. Overload current and short circuit current in three phase power systems with AC 50 Hz and rated voltage 10-12kv.matching with recloser controllers. The breaker can identify current characteristics and realize repetitious autoeclosing or permanent fault isolation. With its own PT power. Main Technical Parameter Item Unit parameter Rated voltage Kv 12 Rated current A 630 400 200 Rated Frequency Hz 50 1 min power frequency withstand voltage KA 42 Lightning impuslse withstand voltage KA 75 Rated short-circuit interrupting current KA 12.5 16 20 Rated short-circuit closing current peak KA 31.5 40 50 Rated short-time withstand current KA 12.5 16 20 Rated withstand current peak KA 31.5 40 50 Rated short-circuit breaking current breaking times Times 30 Mechanical lifetime Times 10000