Magnetic Blowout Forces Acting on the Arc in Molded Case Circuit Breakers

The model consist of a design of a molded case circuit to analyze magnetic blowout forces acting on the arc in the contact systems when the circuit breakers interrupt fault currents. The figure below shows the structure of the parts and the state when the contacts are fully open and the arc has been stretched between contacts.

A 3-D view of the assembly is shown below.

EMS Results

• Mangetic Flux Density (Section)

  

• Magnetic Field Intensity

  

• Force Result