Self Activating breaker -- 2

Job ID: 35297978

Budget: $30 – $250 USD

Looking for an Electrical engineer to help me find a self activating breaker that can activate at about 200amps current and deactive when 200 amps is removed. If you cant fine the right part, i will love you to design it for me.

We need one that can handle 600v and 3 phase