Contact assembly of breaking device and dual-power transfer switch

A dual-power transfer switch, comprising a breaking device comprising two contact assemblies, wherein each contact assembly comprises:

• an arc extinguishing assembly comprising an arc extinguishing grid group located in an arc extinguishing chamber, and a first arc guide plate and a second arc guide plate located at two ends of the arc extinguishing chamber;
• a fixed contact connected to an inlet terminal through a first braid, wherein the fixed contact comprises a U-shaped structure comprising a first segment and a second segment opposite to each other, the first segment is pivotally connected to a first pivot shaft, so that the fixed contact is rotatable between a first closed position and a first open position, the second segment is provided with a fixed contact point, and when the fixed contact is in the first open position, a free end of the second segment is close to the first arc guide plate;
• and
• a contact pressure member elastically abutting against the fixed contact to apply a force to the fixed contact to move it towards the first open position.