A hot swap component useable with a circuit breaker, wherein the hot swap component comprises a fixed portion and a movable portion that are electrically connected to each other by using electrical connectors, wherein the electrical connector comprises a first electrical connector and a second electrical connector, the first electrical connector comprises a first pin and a first base, the second electrical connector comprises a second pin and a second base, both the first base and the second base are located on the fixed portion, and both the first pin and the second pin are located on the movable portion; the first electrical connector is configured to conduct the fixed portion and the circuit breaker when the first pin is inserted into the first base, and the second electrical connector is configured to conduct the fixed portion and the circuit breaker when the second pin is inserted into the second base; the fixed portion comprises a current input end, a current output end, and an anti-electric shock protection mechanism, wherein the current input end is electrically connected to the first base, the current output end is electrically connected to the second base, and the anti-electric shock protection mechanism comprises an anti-electric shock protection cover and an adaptive mechanism, wherein the anti-electric shock protection cover is configured to move between a first position and a second position under action of external force, and the adaptive mechanism is configured to move the anti-electric shock protection cover from the second position to the first position when an electrical connection between the fixed portion and the movable portion is removed; and the movable portion comprises a housing and a cover push rod, the housing is configured to accommodate the circuit breaker, and the cover push rod is configured to push, when the movable portion is electrically connected to the fixed portion, the anti-electric shock protection cover to move from the first position to the second position; when the anti-electric shock protection cover is located at the first position, the first base is electrically isolated inside the fixed portion by using the anti-electric shock protection cover; and when the anti-electric shock protection cover is located at the second position, the first pin can be inserted into the first base. the electrical connector comprises a first electrical connector and a second electrical connector, the first electrical connector comprises a first pin and a first base, the second electrical connector comprises a second pin and a second base, both the first base and the second base are located on the fixed portion, and both the first pin and the second pin are located on the movable portion; the first electrical connector is configured to conduct the fixed portion and the circuit breaker when the first pin is inserted into the first base, and the second electrical connector is configured to conduct the fixed portion and the circuit breaker when the second pin is inserted into the second base; the fixed portion comprises a current input end, a current output end, and an anti-electric shock protection mechanism, wherein the current input end is electrically connected to the first base, the current output end is electrically connected to the second base, and the anti-electric shock protection mechanism comprises an anti-electric shock protection cover and an adaptive mechanism, wherein the anti-electric shock protection cover is configured to move between a first position and a second position under action of external force, and the adaptive mechanism is configured to move the anti-electric shock protection cover from the second position to the first position when an electrical connection between the fixed portion and the movable portion is removed; and the movable portion comprises a housing and a cover push rod, the housing is configured to accommodate the circuit breaker, and the cover push rod is configured to push, when the movable portion is electrically connected to the fixed portion, the anti-electric shock protection cover to move from the first position to the second position; when the anti-electric shock protection cover is located at the first position, the first base is electrically isolated inside the fixed portion by using the anti-electric shock protection cover; and when the anti-electric shock protection cover is located at the second position, the first pin can be inserted into the first base.