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The EVSY module solid-sealed high-performance vacuum circuit
breaker is another technological innovation achievement of Xi'an
Senyuan Company on the basis of the successful design and
production of the original decentralized spring operating mechanism
vacuum circuit breaker. It has independent technical patents.
The working performance of this type of circuit breaker is more
stable, and it solves the unreliability of the long-life operation
of the spring operating mechanism. The mechanism has fewer parts,
simple structure, simple processing and assembly, simple operation
and reliable action. The one-time closing and opening curve is
smooth, the mechanical properties are optimally matched with the
arc extinguishing performance of the arc extinguishing chamber, and
the product has strong versatility and wide application range,
which can meet the needs of new design projects or special
occasions.
The manufacture of EVSPA series vacuum circuit breakers follows the
standards and specifications consistent with GB, DL and IEC related
publications.