使用继电器、接触器、按钮、空气开关、行程开关等低压电器构成的控制电路称为继电接触控制电路。
Use relays, contactor, button, air switch and travel switch etc low-voltage constitute control circuit called relay contact control circuit.
柜内还装有电流表、电压表、自动空气开关、指示灯、交流接触器、工频变频转换开关及起动、停止按钮等。
Inside is arranged ammeter, voltmeter, air circuit breaker, indicator, ac contactor, conversion switch, and buttons for starting or stopping.
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。
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.
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