Circuit Breaker
断路器是密封的电磁开关，如果电流超过断路器的额定电流，开关能打开电路。
断路器有一个线圈，象电磁铁一样工作。 当通过线圈的电流增加时，线圈的磁场变强。 如果电流超过激发点，正常闭合电路的机构向线圈的磁场方向拉以打开电路。
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| 注意 |
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查出和解决造成断路器断路的故障。 这将有助于防止电路部件因电流太大而损坏。 |
断路器设计成在-40到85 °C (−40到185 °F)范围内工作。 因为断路器使用电磁铁而不是用对加热作出反应的金属元件，所以在外界温度变化下断路器不受影响。 还有，电磁铁工作比金属元件快。
断路器用翘板式开关复位。 如果电流继续超过断路器额定值，电路保持打开，即使翘板式开关保持在接通（ON）位置。
电源分线盒有四个断路器，在图1中识别。
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| 图 1 | g00927512 |
电源分线盒位于发动机的左侧。 (1) 电源分线盒 (2) 发动机控制的2.5 amp 断路器 (3) 用户10 amp 断路器 (4) 发动机35 amp 断路器 (5) 来自主ECM起动命令的2.5 amp断路器 (6) 连接发动机供电电源的正极端子 (7) 连接发动机供电电源的负极端子 | |
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