Quote:
Originally Posted by Cory
I understand that, but as a result, the Talon should never be able to see 133A.
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The snap action breakers trip based on heat. Short spikes of high current still make it through before the breaker heats up to the trip point.
Even with a breaker in place, you can still damage a motor controller with excessive current (e.g. a short circuit). The breakers simply can't react fast enough to save the components in certain situations. That is why "breakers are for preventing fires, not saving the components."
Breakers do play a role in component safety, but they need to be used in conjunction with proper electrical design. When using a motor controller...
- that is wired correctly
- with fans when necessary
- with breakers installed
- with well designed mechanisms (to reduce the chance of stalling a motor)
- etc.
you shouldn't see any failures.
-David