スイッチが入はいる

expression, godan verb (-ru)

get into a specific mood; switch on (figuratively)

Idiomatic expression meaning to suddenly enter a focused, motivated, or characteristic state, as if a switch has been flipped. Often used for work, performance, or personality shifts.

• 彼かれは試し合あいになるとスイッチが入はいる。

  He switches on when it's game time.

• 仕し事ごとのスイッチが入はいるまで時じ間かんがかかる。

  It takes time for my work switch to flip on.