电流接触器逐级顺序自动平衡加热棒的使用率。并且在出现电力供应故障时,本装置能够重新编程恢复初始状态。(仅适用于36千瓦以上的热水器。)

• Contactors are staged automatically and sequentially to equalize element usage. Unit reprograms to off position on power failure. (available only for 36 KW or higher)