noun
power disconnected state
Technical computing term for a state where the power supply is physically cut off or switched off.
デバイスが電源切断状態のときは、バッテリーが消耗しません。
When the device is in a power disconnected state, the battery does not drain.
電源オフ is a more common, everyday term for 'power off', while 電源切断状態 is a formal technical term emphasizing the disconnected state.
Compound of 電源 (power source), 切断 (disconnection), and 状態 (state).