提供了各国的接触器或起动器与熔断器成功地协调配合的实例和技术数据。
The successful coordination examples and technique data of contactor or starter and fuses in various countries are given.
问题：3RW40软起动器是否需要设计外置旁路接触器？如加外置旁路接触器会有何影响？
Question: Is it necessary to add external bypass contactor for 3RW40 softstarter? What's the result when adding external bypass contactor for 3RW40 softstarter?
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