A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.Its basic function is to detect a fault condition and interrupt current flow.n early form of circuit breaker was described by Thomas Edison in an 1879 patent application, although his commercial power distribution system used fuses.
Since the shortest swim distance in a triathlon is likely 400â800 meters, and typically more, one needs to consider what training is required to sustain a good pace for the distance to be swum. 800 meters is no sprint.
At the end of the swim, record your total time. Then divide that total time by 10 (a 500 yd swim is made up of 10 x 50s) and the result will be your 50 yd swim pace. Therefore, if you swam your 500 freestyle in 7 minutes and 30 seconds, your aerobic 50 yd swim pace would be .45 seconds (7.5 minutes divided by 10).