During opening process:

• ⚡ Arc discontinuationContact separation generates an arc.
• 💨 Airflow generationThe moving contact moves the piston, compressing the SF6 gas in the arc-extinguishing chamber, forming a high-speed airflow.
• 🔥 Arc extinguishingThe airflow is blown longitudinally through a nozzle, quickly extinguishing the arc.
• 🌡️ Insulation and heat dissipationThe high insulation strength and good thermal conductivity of SF6 gas ensure that breakdown does not occur during or after arc extinguishing, while effectively absorbing and dissipating heat.
• 🔄 Gas circulationAfter the arc is extinguished, a portion of the SF6 gas is discharged through the inner hole of the stationary contact and transported to the high-voltage chamber by a gas pump, completing gas circulation and reuse.

• ⭐ Excellent Arc Extinguishing PerformanceEffectively extinguishes electric arcs, has a large breaking capacity, and is less prone to reignition when breaking capacitive or inductive currents.
• 🛡️ High Insulation LevelThe dielectric strength of SF6 gas is 2–3 times that of air, and under certain pressures, it can reach or even exceed the level of insulating oil.
• 📐 Compact StructureThe high insulation level allows for a reduction in the number of circuit breaker contacts, thus reducing equipment size.
• ⚙️ Reliable OperationLong electrical life, long maintenance cycles, and no fire hazard, suitable for frequent operation.

• 🏢 Primarily used in 110kV and above high-voltage power transmission and transformation systems, such as for the control and protection of transmission lines. It can also be used as a tie-type circuit breaker.
• 🏭 It can also be used in medium-voltage applications, such as for capacitive and inductive loads like capacitor banks, compensating reactors, and motors.