Circuit breaker with pluggable trip module

A circuit breaker having a pluggable trip module, the circuit breaker comprising:

• a base unit;
• a system of electrical contacts;
• a switching and trip mechanism;
• and
• a current transformer for powering the pluggable trip module, wherein the pluggable trip module is one of a pluggable electronic trip module and a pluggable thermomagnetic trip module, the pluggable electronic trip module and the pluggable thermomagnetic trip module being mechanically and electrically interchangeable with one another.

A circuit breaker for powering a secondary electrical circuit, the circuit breaker comprising:

• a main electrical circuit comprising a main transformer configured to convert a current to power the secondary electrical circuit;
• wherein the secondary electrical circuit comprises at least one of:
• a pluggable electronic trip module comprising a secondary transformer and an electronic control unit;
• or
• a pluggable thermomagnetic trip module comprising a thermomagnetic trip.