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Breaker "Types" and Classifications
- Thread starter Wedge1
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Could you give an example as to how it has been included on a label, a picture or? Is it on the breaker, on an enclosure label?
As a former breaker application engineer I have never came across that term or had and question with reference to that term as it applies to breakers and enclosures.
As a former breaker application engineer I have never came across that term or had and question with reference to that term as it applies to breakers and enclosures.
frenchelectrican
Senior Member
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- Nord'est Wisconsin et Paris France
Sometime they will have classifed with extra number or letter some case it will tell the tripping curve or tripping time.
I know the European breaker is listed by this way i will make it quick example here real quick here ,..
C16 = 16 amp C = slow tripping time aka for motor starting or transformer useage
B16= 16 amp B = average tripping time
A16 = 16 amp A= very fast tripping time almost like nontime delay fuse time tripping charticis
but for North Americian Verison it pretty tough call to deal with this because i dont have all the info about the tripping time but seems most breaker have very close to idential tripping times but i am saying not all will trip at the same time peroid
but for other type like specal useage that pretty much up to the manufacter have their extra code number or letter add to it
Merci , Marc
I know the European breaker is listed by this way i will make it quick example here real quick here ,..
C16 = 16 amp C = slow tripping time aka for motor starting or transformer useage
B16= 16 amp B = average tripping time
A16 = 16 amp A= very fast tripping time almost like nontime delay fuse time tripping charticis
but for North Americian Verison it pretty tough call to deal with this because i dont have all the info about the tripping time but seems most breaker have very close to idential tripping times but i am saying not all will trip at the same time peroid
but for other type like specal useage that pretty much up to the manufacter have their extra code number or letter add to it
Merci , Marc
Relay "Types"
Relay "Types"
:-? Thanks for the responses....the breakers I referred to do not have this "A,B,C" type of trip curve classification, but a number(i.e. 63), which represents a certain trip time...I do not have a picture of the enclousure I mentioned, but I believe it was specifically for the enclosure only(Type I,II), and nothing to do with the breakers...thx..
Relay "Types"
:-? Thanks for the responses....the breakers I referred to do not have this "A,B,C" type of trip curve classification, but a number(i.e. 63), which represents a certain trip time...I do not have a picture of the enclousure I mentioned, but I believe it was specifically for the enclosure only(Type I,II), and nothing to do with the breakers...thx..
UL489 devices would not have that type of designation. However UL1077 devices, "supplimentary protective devices" commonly will have that type of options available. You would have to take a look at the NEC for guidance on where you are allowed to apply these devices.
What it will boil down to is complying with the NEC's requirements for OCP using UL489 devices, i.e regular circuit breakers. After all the protection is provided you can install the supplimentary protectors any where that you would like.
What it will boil down to is complying with the NEC's requirements for OCP using UL489 devices, i.e regular circuit breakers. After all the protection is provided you can install the supplimentary protectors any where that you would like.
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