| 1. | Each unit should include a main switch and ammeter with a scale of about 20 ampere capacity .
每一套装置应包括一个主开关和电流表，电流表的刻度范围约20安培。 |
| 2. | All rooms are linked to the main switchboard
所有的房间都与主开关连接。 |
| 3. | Move the main switch from on to off or press the control button
将主开关从开转到关，或者按压控制钮。 |
| 4. | Power window main switch
电动窗主开关 |
| 5. | After it has tripped , make sure the electrical circuit cannot be truned back on
在主开关跳掉之后，确定电路无法再被重新开启。 |
| 6. | Power window switch
电动窗主开关 |
| 7. | See air circuit breaker , main breaker , molded case circuit breaker and power circuit breaker
（见空气线路断路器、主开关、塑壳线路断路器等） 。 |
| 8. | The generator main breaker is the device , usually mounted on the generator set , that interrupts the genset ' s power output
主开关通常安装在发电机组上，用来切断输出电流。 |
| 9. | Main breakers provide overcurrent protection and a single disconnect point for all power in a switchboard or device
主开关能够提供过电流保护，是配电盘或设备的电源断开点。 |
| 10. | By using a modified pwm control method , the two main switches conduct symmetrically and can achieve zero - voltage switching ( zvs ) easily
主开关管不仅工作在对称状态,而且能很好实现软开关。 |
