The utility model discloses an insulating wide brank, including the pincers body, pincers support, pull rod and handle, the centre of the pincers body is a switching portion, the front end of pincers support is fixed in switching portion, the pincers support is the hollow tube, and the pull rod slides and sets up in the pincers support, and the afterbody of pull rod stretches out the pincers support, and the afterbody of pull rod is fixed with the handle, be equipped with the connecting rod between the afterbody of the pincers bodies and the pull rod, it has the perpendicular groove that makes connecting rod and pull rod be connected to open on the lateral wall of pincers support. The utility model has the advantages that: whole device can all adopt insulating material to make, does benefit to hot -line operation, and through handle pulling pull rod, then the drive?connecting rod control pincers body is opened and is closed to the insulating guard shield of control is opened, and easy operation is convenient, safe and reliable.