請問 differential switch 要怎麼翻呢?

Question

這是電器產品的說明書，全文如下：
Automatic differential switch (circuit breaker)：
Move the main switch from on to off or press the control button.
After it has tripped, make sure the electrical circuit cannot be truned
back on.
請幫忙翻譯全文，尤其是 differential switch

Answer 1

Automatic differential switch (circuit breaker)：
自動差分開關 (斷路開關)：
Move the main switch from on to off or press the control button.
將主開關關掉，或是按下控制鍵。
After it has tripped, make sure the electrical circuit cannot be truned back on.
在主開關跳掉之後，確定電路無法再被重新開啟。

Answer 2

Automatic differential switch (circuit breaker)：
自動斷路開關：
Move the main switch from on to off or press the control button.
將主開關從開轉到關，或者按壓控制鈕。

After it has tripped, make sure the electrical circuit cannot be truned
back on.
截斷電路之後，請確認電路不會回流。

請幫忙翻譯全文，尤其是 differential switch
....因為differential switch不太確定正確涵義
所以我把括弧中的circuit breaker等同於differential switch的另一種說法


如有錯誤，請多包涵

Answer 3

differential switch 特定的開關