Vacuum switches BB/TEL-10(20) for rated voltage 10(20) kV, rated currents up to 3150 A, rated tripping currents up to 40 kA, climatic version U, placement categories 2 and 3, consisting of switching module of ISM15(25) series of three-pole version with phase electromagnetic drive and control module of CM series, are designed for switching of electric circuits during normal and emergency modes in networks of three-phase alternating current with frequency 50 Hz with isolated, compensated and earthed neutral. Vacuum circuit breakers are designed for application in power grid complex and in various branches of national economy, including oil and gas producing, processing, petrochemical, chemical, mining and other industries. Vacuum circuit breakers of ??/TEL series are used as a part of switchgear and CSR of general industrial or explosion-proof execution.
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