Abb low voltage circuit breaker cannot store energy

Cause: The energy storage motor fails to store energy, preventing the circuit breaker from closing automatically. Analysis and Handling: If the energy storage indicator light is off before closing, check the control power supply of the energy storage motor. [pdf]

Abb circuit breaker cannot store energy after closing

A faulty Y1 solenoid or improperly actuated S2 microswitch can interrupt the closing circuit. Measure Y1 coil resistance. If abnormal (shorted or open), replace the Y1 module. If resistance is normal, check S2 actuation. [pdf]