Solid-state circuit breaker

A solid-state circuit breaker, which is characterized in that a mechanical breakpoint of the solid-state circuit breaker adopts a modular layout, comprising:

• a housing module, forming a cavity for accommodating components of the solid-state circuit breaker;
• a breaking unit module, installed in the housing module and comprising a stationary contact fixed to the housing module and a movable contact being movable relative to the stationary contact to realize a connection and a disconnection of a circuit;
• a mechanism module, installed in the housing module and configured to drive an action of the breaking unit module;
• and
• a transmission module, configured to connect the mechanism module and the breaking unit module, so that a motion of a moving component in the mechanism module is configured to be transmitted to the movable contact of the breaking unit module,
• wherein the housing module, the mechanism module, the breaking unit module and the transmission module are independent from each other and are configured to be installed and disassembled from each other.