VT12(ZN85)-40.5 indoor HV vacuum circuit breaker is suitable for the places which rated current frequently operated or break short circuit current many times. VT12(ZN85)-40.5 indoor HV vacuum circuit breakers conformed to the standard of GB1984 (AC/HV circuit breaker), JB3855 (3.6-40.5kV indoor AC/HV vacuum circuit breaker) and IEC. VT12(ZN85)-40.5 indoor HV vacuum circuit breaker has interlock function, namely can be used in handcart unit and fixed type unit manual mechanism and fixed mechanism.
Rated voltage 40.5kV
Rated frequency 50Hz
Rated lighting impulse withstand voltage 185kV
Rated power frequency withstand voltage (1min) 95kV
Rated operated order o-0.3s-co-180s-co
Type of circuit breaker | Rated current | Rated breaking current (kA) | Rated short circuit making current (peak kA) | Rated short circuit continuous time(s) | Rated short circuit current breaking time(Times) | Mechanical life (Times) |
VT12(ZN85)-40.5 indoor HV vacuum circuit breaker |
630 1250 |
20/25 | 50/63 | 4 | 30 | 1000 |
1250 1600 2000 2500 |
31.5 | 80 | 4 | 20 | 1000 |
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