In what way is an isolator different from an air-break switch? All Questions › Category: Switchgear And Protection › In what way is an isolator different from an air-break switch? 0 Vote Up Vote Down Chetan Shidling asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down Chetan Shidling answered 4 years ago The isolators will disconnect and connect the line only at no load. The air break switch will break and make the circuit at load.