Chapter 5: Using the PX3TS137Overcurrent Protectors for OutletsPX3TS models rated over 20A (North American) or 16A (international)contain overcurrent protectors for outlets, which are usually branchcircuit breakers. These circuit breakers automatically trip (disconnectpower) when the current flowing through the circuit breaker exceeds itsrating.If the circuit breaker switches off power, the front panel display shows: CbE, which means "circuit breaker error." SeeOvercurrentProtector Information (on page 102).At the same time, the internal beeper turns on. SeeBeeper (on page138).When a circuit breaker trips, power flow ceases to all outlets connectedto it. You must manually reset the circuit breaker so that affected outletscan resume normal operation.Comparison: Fuses for the inlet transfer switch protect the inlet transferswitch from overload. Overcurrent protectors for outlets, if available,protect associated outlets from overload. The rating of a fuse for theinlet transfer switch is higher than the rating of an overcurrent protectorfor outlets. See Fuses for the Inlet Transfer Switch(on page 133).Resetting the Button-Type Circuit BreakerYour button-type circuit breakers may look slightly different from theimages shown in this section, but the reset procedure remains the same.To reset the button-type breakers:1. Locate the breaker whose ON button is up, indicating that thebreaker has tripped.2. Examine your PX3TS and the connected equipment to remove orresolve the cause that results in the overload or short circuit. Thisstep is required, or you cannot proceed with the next step.
