Product description

SMGV1-12G indoor high voltage vacuum circuit breaker, three-phase AC 50HZ rated voltage of 12KV power system indoor switching equipment, as the power grid equipment, industrial and mining enterprises power equipment protection and control unit. Applicable to require the rated current in the frequent operation, or a number of places breaking short-circuit current. The circuit breaker using the body and the circuit breaker body design, can be used as a fixed installation unit, but also with a dedicated propulsion mechanism, the composition of the role of hand-car unit.

Model and meaning

Environmental conditions

○ Ambient air temperature: upper limit + 40 ℃, lower limit -15 ℃;

○ Altitude: ≤ 1000m (If you need to increase the altitude, the rated insulation level corresponding increase);

○ Air relative humidity is not more than 95% daily average, the monthly average of not more than 90%;

○ Amplitude: earthquake intensity does not exceed 8 degrees;

○ No fire, explosion hazard, serious pollution, chemical corrosion and severe vibration of the place.

The main technical parameters

Note: 20kA、25kA、31.5kA t=0.3stl=180s：40kA t=180s tl=180s

Outline and mounting dimensions (mm)