The reaction springs are arranged in the upper and lower moving contact pedestals, thus the dropout fuse ensures the junction to be good in contact, and is durable.
使用本发明因上动触头座和下动触头座内设置了反作用弹簧，使接点变得接触良好，长久耐用。
The reaction springs are arranged in the upper and lower moving contact pedestals, thus the dropout fuse ensures the junction to be good in contact, and is durable.
使用本发明因上动触头座和下动触头座内设置了反作用弹簧，使接点变得接触良好，长久耐用。
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