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16:52, 26 October 2026
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Rosatom Completes Testing of Experimental Generator Circuit Breaker

The generator circuit breaker is the most complex switching device in the entire electricity generation and consumption chain.

Photo: Atommedia.online

Rosatom Automated Control Systems (RASU JSC) has successfully completed the first phase of testing an experimental prototype of a domestically developed generator circuit breaker. The equipment meets the most stringent standards for high-capacity nuclear power units. In practical terms, it is designed to operate continuously under currents comparable in magnitude to a lightning strike.

The new equipment has strategic significance for the entire power industry, specialists say. It directly affects the reliable operation of existing nuclear power units and the commissioning of new nuclear power plants. The generator circuit breaker is the most complex switching device in the entire electricity generation and consumption chain.

“The generator circuit breaker is a critical component of a power unit and one of the most complex products in modern electrical engineering. It must carry currents of tens of thousands of amperes for extended periods, withstand extreme thermal and electrodynamic stresses, and operate reliably as part of a nuclear power plant’s electrical output system. Until now, only two foreign companies have been capable of manufacturing this equipment. Our own development will eliminate that dependence and support new projects in nuclear power and other energy sectors,” said Andrey Butko, CEO of RASU JSC.
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