Air circuit breakers are gradually being replaced by vacuum types due to the latter's longer lifespan. Sulfur hexafluoride (SF6): the arc is extinguished within a chamber filled with sulfur ...

This chapter reviews the circuit-breaker designs which are type tested to IEC 60298 and IEC 62271-100 for use on distribution voltages up to 52 kV. The design and service experience of different types ...