CSSC Holdings(SH:600150) 中国能源报·2025-12-13 08:31Core Insights - The world's first bipolar bidirectional shipboard 10 kV medium-voltage DC hybrid circuit breaker has successfully passed high current short-circuit interruption tests, marking a significant technological breakthrough in the field of shipboard medium-voltage DC circuit breakers and positioning China as a leader in ship power equipment innovation [1][3]. Group 1: Technological Advancements - The new circuit breaker operates at a voltage level of 10 kV, which is 45 times higher than the standard residential voltage of 220 V, representing the highest voltage level in current ship power systems [1]. - The development of this circuit breaker addresses the limitations of traditional air circuit breakers, which struggle to meet the demands of larger, high-end, and intelligent vessels due to their performance constraints in terms of interruption speed, capacity, and size [3][4]. Group 2: Performance and Applications - The hybrid circuit breaker features ultra-fast interruption and fault current limiting capabilities, with its size reduced to half that of similar land-based products, making it suitable for the harsh marine environment [3][4]. - This innovation significantly expands the application boundaries of shipboard DC integrated power systems, allowing them to adapt to more complex electrical loads and severe working conditions [4].