MZZ8-40.5 series indoor high-voltage vacuum circuit breakerDetailed product description：

MZZ8-40.5 series indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor device with a rated voltage of 40.5kV, equipped with a dedicated 3AV3 spring mechanism. The circuit breaker can be configured in JYN1-10.5 (Z) movable metal enclosed switchgear or KYN61-40.5 assembled metal enclosed switchgear, and is currently the most ideal circuit breaker in 40.5KV devices. This series of products has high technical parameters, strong breaking ability, and reliable action. Stable performance, long lifespan, easy maintenance, and no explosion hazard or pollution. It is used for the protection and control of single busbar electrical facilities in industrial and mining enterprises, power plants, and substations, and is suitable for frequent operation places. It can also be used for special occasions such as capacitor banks. This product adopts an integrated and modular design, with a simple and reasonable overall structure. It is arranged vertically, with the arc extinguishing chamber on top and the interlocking and operating mechanism on the bottom. Using a dedicated 3AV3 spring operated mechanism, there is no need for adjustment, and the action is stable and reliable. The vacuum arc extinguishing chamber is arranged inside a closed insulation cylinder, which improves the insulation performance and reduces the overall size.

Structural features:
1. Environmental temperature: upper limit+40 ℃, lower limit -15 ℃. -25 ℃ in high-altitude regions;
2. The average daily relative humidity does not exceed 95%; The average daily water vapor pressure shall not exceed 2.2kPa, and the average monthly relative humidity shall not exceed 90%; The average monthly water vapor pressure shall not exceed 1.8kPa.
3. Altitude: 1000m;
5. The seismic intensity shall not exceed 8 degrees;
6. Not suitable for places with flammability, explosion, hazardous chemical corrosion, and severe vibration.

MZZ8-40.5 series indoor high-voltage vacuum circuit breaker model meaning