The term “cold switching” indicates that a switch is actuated with no applied voltage; therefore, no current will flow when the switch is closed, and no current will be interrupted when the switch is opened.
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Contact life is much longer when cold switching is used.
当采用冷切换时，触点的寿命要长许多。
Cold switching is defined as opening and closing the switch when no current is flowing.
冷切换是指在没有电流流通时开路或闭合开关。
Cold switching is desired to extend contact life. It can increase contact life by 10-1000 times over switching at maximum levels.
冷切换可以延长触点寿命，最大时可将触点寿命提高10 ~ 100倍。
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