Widerange shunt and undervoltage

A trip apparatus, comprising:

• a power terminal coupled to a monitored or controlled voltage;
• an actuator having a pusher member and a coil, the pusher member movable between a first position that does not actuate an actuator interface of a connected circuit breaker and a second position that actuates the actuator interface;
• a rectifier having an input and an output, the input of the rectifier coupled to the power terminal;
• a selector;
• and
• a processor having a first input, a second input, and an output, the first input of the processor coupled to the output of the rectifier, the second input of the processor coupled to an output of the selector, and the output of the processor coupled to the actuator;
• the processor configured to:
• determine a threshold based on a select signal received at the second input of the processor, compare a voltage at the first input of the processor to the threshold, and
• control a voltage of the coil to selectively control the pusher member in the first or second position based on the comparison of the voltage at the first input of the processor to the threshold.

A circuit breaker system, comprising:

• a circuit breaker having a line contact, a load contact, and an actuator interface, the line contact adapted to be coupled to a power line, the circuit breaker configured to operate in a first state to electrically couple the line contact to the load contact, and a second state to electrically disconnect the line contact from the load contact, the circuit breaker configured to operate in the second state responsive to mechanical actuation of the actuator interface;
• and
• a trip apparatus attached to the circuit breaker, the trip apparatus having a power terminal, an actuator, a selector, a processor, and a rectifier;
• the power terminal coupled to a monitored or controlled voltage;
• the actuator having a pusher member and a coil, the pusher member movable between a first position that does not actuate the actuator interface and a second position that actuates the actuator interface;
• the rectifier having an input and an output, the input of the rectifier coupled to the power terminal;
• the processor having a first input, a second input, and an output, the first input of the processor coupled to the output of the rectifier, the second input of the processor coupled to an output of the selector, and the output of the processor coupled to the actuator;
• the processor configured to:
• determine a threshold based on a select signal received at the second input of the processor, compare a voltage at the first input of the processor to the threshold, and control a voltage of the coil to selectively control the pusher member in the first or second position based on the comparison of the voltage at the first input of the processor to the threshold.