Intelligent circuit breaker module

An electronic cabinet having a redundant power supply and comprising:

• a redundant power unit having docking bays for two or more breaker modules;
• a first conductor delivering power to the power unit from an external source;
• and
• a second conductor delivering power from the power unit to elements in the cabinet from the power unit
• wherein each breaker module comprises a housing for supporting and enclosing elements of the module, a circuit breaker mounted in the housing in a manner that an action of installing the module connects the breaker to bridge first and the second conductors, and monitoring circuitry for monitoring characteristics of the circuit breaker, the monitoring circuitry mounted in the housing and having a first connector element for engaging a mating connector element in the action of installing the module, such that action of withdrawing the circuit breaker module also withdraws the monitoring circuitry.