ZW37A-40.5 high stability outdoor AC Vacuum Circuit Breaker
ZW37A-40.5 outdoor AC high voltage vacuum circuit breaker is mainly
used to break and close load current, over-load current and
short-circuit current in outdoor 36kV three-phase alternating
current 50Hz power system, also suitable for occasion with frequent
The product is suitable for substations, industrial and mining
establishments, rural power network and occasions with frequent
operation to protect and control.
The use of environmental conditions:
1. Ambient temperature: not higher than +40 °C, not less than -35°C
2. Altitude: not exceed 1000m.
3. Relative humidity: daily average of not more than 95%, month
average of not more than 90%.
4. Earthquake intensity: not more than ten.
5. No fire, explosion hazard, serious filthy, chemical corrosion,
as well as places of intense vibration.
Main Technical Parameter
|Rated short-circuit breaking current||kA||20||25||31.5|
|Rated short-circuit making current||50||63||80|
|Rated short-time withstand current||20||25||31.5|
|Rated peak withstand current||50||63||80|
|Rated short-circuit duration current||s||4|
|Rated insulate lever||1min P.F withstand voltage||kV||95|
|Lightning impulse withstand voltage(peak)||185/215|
Outline and mounting dimension