S&C Series 2000 Circuit Switchers now feature a transformer primary-fault interrupting rating of 25 kA RMS symmetrical. This higher rating has been verified through a battery of interrupting tests performed at KEMA Laboratories. The new rating applies to all Series 2000 Circuit Switchers rated at 69 through 138 kV, operating in the temperature range of -30 C to 40 C. The new, higher rating within the temperature range also applies retroactively to all S&C Series 2000 Circuit Switchers rated 69 through 138 kV.
S & C Electric Company–Inquire R.S. 123