Timeline for How to protect a 1A 120V circuit breaker from direct short?
Current License: CC BY-SA 3.0
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| Jun 8, 2017 at 22:49 | comment | added | Andrés | A thermomagnetic has a maximum current it can break. If it's for example 500A, it will be able to stop any current less than that. If your short circuit were to be 600A, the current wouldn't be interrupted (probably there's an arc that has formed). This applies more to households. If the electric company tells you that the short circuit current is 1kA, you have to make sure you're able to stop that because that's the current you'll get if you short-circuit the two cables given by the electric company. You shouldn't have problems with this since there should be more protections upstream. | |
| Jun 8, 2017 at 16:47 | comment | added | NFranklin | Thanks for the response, Andres! When you say "This circuits also have a maximum interrupt current." Are you referring to the circuit breaker? I'll look into thermo-magnetics. I understand just replacing a fuse would be the easy way to go here (failures should be extremely uncommon) but I prefer using a circuit breaker, it is simpler for the user. Thanks for the tip about about using a resistor to test. | |
| Jun 8, 2017 at 16:29 | history | answered | Andrés | CC BY-SA 3.0 |