GW17A-126～550 type double-post, horizontal telescopic
GW16A/17A-126~550 series outdoor HV AC isolating switchgear is single post, single arm, vertical telescopic structure/double-post, horizontal telescopic structure. When opening, main blade is retract and fold with revolving operation insulator of each pole. After separating, a clearly and visible fracture will be formed between main blade and static contact. When closing, main blade will straighten its arm as human, after the arm completely straightened, moving contact would clamp static contact reliably. Then, the breaking operation will be completed.