INADVERTENT PULLING OF AC BUS CIRCUIT BREAKER CAUSED GYRO; AUTOPLT; AND AUTOTHROTTLES TO BE INOP. BEFORE FLC DISCOVERED THE CIRCUIT BREAKER; THE ACFT HDG DEVIATED AS WELL AS ALT. CIRCUIT BREAKER WAS RESET AND ALL SYS RETURNED TO NORMAL.

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ON FLT FROM CLE TO LAS WHILE ENRTE AT FL330 BTWN ONEIL AND CHEYENNE; THE FO WAS FLYING. I (CAPT) GOT OUT OF MY SEAT TO RETRIEVE SOMETHING FROM MY SUITCASE. WHILE PICKING MY SUITCASE UP FROM BEHIND MY SEAT; I EITHER BUMPED OR A STRAP CAUGHT ON AN AC BUS CIRCUIT BREAKER AND PULLED IT. SINCE I WAS NOT LOOKING AT THE INST PANEL; I DID NOT SEE THE FLAGS. I NOTICED THE FLAGS ON THE FO INST PANEL ABOUT THE SAME TIME THE FO DID. SINCE HIS FLT INSTS WERE INOP; I TOLD HIM I WOULD FLY THE ACFT AND HE SHOULD GET OUT OUR ABNORMAL CHKLIST. WE DISCOVERED A CIRCUIT BREAKER WAS OUT AND RESET THE CIRCUIT BREAKER. I ADVISED CTR WE HAD A PROB WITH OUR DIRECTIONAL GYRO AND WE MIGHT NEED SOME HELP TILL WE GET OUR DIRECTIONAL GYROS BACK. OUR HDG TURNED APPROX 120 DEGS TILL WE GOT EVERYTHING BACK IN ORDER. OUR AUTOPLT AND AUTOTHROTTLES WERE INOP ALSO; AND WE LOST ABOUT 380 FT; BUT RECOVERED IMMEDIATELY. ONCE WE RESET THE CIRCUIT BREAKER AND ALL PWR WAS RESTORED; ALL SYS WERE NORMAL. THE PROB STARTED BY BUMPING THE CIRCUIT BREAKER. I THINK IN RETROSPECT I SHOULD HAVE BEEN MORE CAREFUL IN MOVING MY SUITCASE. ALSO; AS CAPT; I SHOULD HAVE DOCUMENTED THE INCIDENT IN ACFT LOG. I DIDN'T; AS THE PROB WAS PLT INDUCED; AND ONCE THE PWR WAS RESTORED; THE ACFT OPERATED NORMALLY.