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Originally Posted by steven114
While the main circuit breaker is rated for 120A, it takes a significant amount of time for it to trip at that current. I seem to remember someone quoting 8 seconds at 120A, 4 at 240A, etc. (although that is from memory, I'm sure there's a curve somewhere that has the exact speficiations)
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Steven,
The circuit breaker has an infinite trip time at 120 amps. It can sustain a 600% overcurrent for a few seconds and increasing times for current less than that. However, since this is a temperature sensitive device, combinations of current that increase the temperature also reduce the breaker trip point. A hot breaker may not be able to handle even the 120 amps, going down to 50% at 200 degrees. The data sheet is available in the FIRST documentation under Section 5 Robot specs.