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.
During aerobic exercise your body's demand for oxygen can be met and your intensity sustained. Any exercise you can maintain for more than two minutes will be aerobic. Aerobic swims are those that are longer in distance and duration. These swims are performed at an easy to moderate pace. Using the Borg Rating of Perceived Exertion scale, which measures physical intensity for a given effort on a scale of 6 to 20, an aerobic swim would fall somewhere between 7 and 13.