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1·There exists some problems in using the common alternating current contactor. It improves after having used the vacuum contactor.

普通交流接触器在使用中存在一定的问题，改用真空交流接触器效果良好。

2·The utility model relates to a vacuum contactor-fuse combined electric appliance, particularly a hand trolley type horizontal pulling and isolating switch device.

本实用新型一种真空接触器-熔断器组合电器，涉及手车型水平拉引隔离的开关装 置。

3·This article discusses the necessity of air leakage detection to check the vacuum of the vacuum contactor in operation, and the mechanism of air leakage detection theoretically.

论述了真空接触器真空度运行检漏的必要性，并从理论上探讨漏气检测的机理。

4·Mating corresponding vacuum contactor switch is for electric power, metallurgy, mine, chemical controlling and protecting, it is suitable for location that has bad load and frequent operation.

配套相应的真空接触器开关可用于电力、金、山、工等部门的配电系统作控制和保护，特别适合投切恶性负载和需频繁操作的场所。

5·Mating corresponding vacuum contactor switch is for electric power, metallurgy, mine, chemical controlling and protecting, it is suitable for location that has bad load and frequent operation.

配套相应的真空接触器开关可用于电力、冶金、矿山、化工等部门的配电系统作控制和保护，特别适合投切恶性负载和需频繁操作的场所。

6·Reduction in parts Inventories and Costs: the simplified design of the vacuum circuit breaker or contactor has up to 50% less parts than the equivalent air magnetic equipment.

减少在零件存货和费用：真空开关或接触器的被简化的设计有50%较少部份比等效空气磁性设备。