● ZN63C-12 series indoor AC MV vacuum circuit breaker (hereinafter referred to as circuit breaker) is an indoor switchgear with three-phase AC 50Hz and rated voltage of 12kV, which can be used for the control and protection of electrical facilities in industrial and mining enterprises, power plants and substations It is suitable for places with frequent operations.
● The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, and is used as a fixed installation unit.
● Standard: IEC 62271-100

Selection

Note:
1. order a ZN63 side-mounted main circuit with right wiring, rated voltage 12KV, rated current 630A, rated short-circuit breaking current 25KA.

Operating conditions

1. The ambient temperature is not higher than +40°C and not lower than -15°C (storage and transportation at -30°C are allowed); 2. The altitude is not higher than 1000m;
3. Relative temperature: the daily average is not more than 95%, and the monthly average The value is not more than 90%, the daily average value of saturated vapor pressure is not more than 2.2×10-'MPa, and the monthly average value is not more than 1.8×10MPa;
4. The seismic intensity does not exceed 8 degrees;
5. There is no fire, explosion hazard, serious pollution, Places subject to chemical corrosion and severe vibration.

Features

1. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front-to-back configuration and connected as a whole through a transmission mechanism.
2. Depending on the design of the switchgear, the primary conductive output can be divided into right output and left output.
3. The main conductive circuit is primarily designed with an insulating cylinder, but it can also be designed with a fixed-sealing pole method.
4. The operating mechanism adopts a spring energy storage type and has both electric and manual energy storage functions.
5. It features an advanced and rational buffering device, ensuring no rebound during circuit interruption and reducing the impact and vibration during circuit breaking.
6. It requires minimal or no adjustments and requires very little maintenance or is maintenance-free.
7. The mechanical lifespan can reach 20,000 cycles.

Technical data

Technical datas are shown in Table 1

The mechanical characteristic parameters are shown in Table 2

Opening and closing coil parameters are shown in Table 3

Energy storage motor parameters are shown in Table 4

Overall and mounting dimensions(mm)

Fixed outline size drawing (insulation cylinder)

Solid seal type outline dimension drawing (insulation cylinder)