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LW58A is a combined apparatus including a SF6 dead tank circuit breaker with self-blast arc extinction.The circuit breakers are available for single or three pole operation，It is used to break rated current, fault current, or to switch electric lines, and thus realizes the controlling and protection of power system. It is capable of regular operation and also can be used as connecting circuit breaker.New spring operating mechanism ensure high reliability and safety. The arc extinguishing chamber adopts horizontal layout, with high overall stability and excellent seismic performance.
General applicable environment
Rated current： 4000A
Rated Breaking current：up to 40kA
Rated operating sequence：O-0.3s-CO-3min-CO
Rated insulation level：According to the latest IEC 62271-1