robbob2112
Doing more research, mosty harmless
These fuses were mentioned in the house burned down thread over in up-in-smoke. I purchased two models and fuses off aliexpress to see how the resistance changed over time when running current through them. The thread below is the beginning of that discussion.
diysolarforum.com
The reason they are interesting is because they have a much higher DC rating for AIC (amp interupt current) than the class T
These fuses are similar in appearance to the NT00, NT1, and NT2 fuses availble in the UK and Europe. They actually look pretty much identical except for the markings.
https://www.farnell.com/datasheets/41144.pdf - page 22
The NT2 is CE listed
Neither of these fuse types are UL listed so use at your own risk.
I have te two Chint fuses, several ANL fuses, some class T fuses, a Mega fuse, and a common lever breaker of a good brand.
I will run a hundred or so amps through them and measure temperature and resistance at a set interval. We know resistance increases with temperature so I was curious by how much.
The smaller of the Chint fuses I intend to blow on purpose then take it apart to examine build quality and see what is inside.
Attached are the documents I can find concerning them.
Markings on the fuses -
CCC - China Compulsory Certification - Chinese company that does standards like UL listing in the US
www.china-certification.com
reinspection annually
TUV - Technischer Uberwachungs-Verien - - German Company that does standards similar to UL listing in the US
https://nationalfuse.com/wp-content/uploads/2022/04/common-fuse-markings.pdf
House burned down
Possible solution: BACK UP. This guy is FUSED 🤣 1 on each battery, 1 300amp anl and 1 T class. 🤣 fused Probably had a fire - bad experience Link for the contactor? The MRBF is probably OK, but I get them from Mouser for eaton brand.
diysolarforum.com
The reason they are interesting is because they have a much higher DC rating for AIC (amp interupt current) than the class T
These fuses are similar in appearance to the NT00, NT1, and NT2 fuses availble in the UK and Europe. They actually look pretty much identical except for the markings.
https://www.farnell.com/datasheets/41144.pdf - page 22
The NT2 is CE listed
Neither of these fuse types are UL listed so use at your own risk.
I have te two Chint fuses, several ANL fuses, some class T fuses, a Mega fuse, and a common lever breaker of a good brand.
I will run a hundred or so amps through them and measure temperature and resistance at a set interval. We know resistance increases with temperature so I was curious by how much.
The smaller of the Chint fuses I intend to blow on purpose then take it apart to examine build quality and see what is inside.
Attached are the documents I can find concerning them.
Markings on the fuses -
CCC - China Compulsory Certification - Chinese company that does standards like UL listing in the US
What is CCC - MPR China Certification
This is a comprehensive overview of the China Compulsory Certificate, or CCC in short. Many products need CCC to be exported to China.
www.china-certification.com
TUV - Technischer Uberwachungs-Verien - - German Company that does standards similar to UL listing in the US
https://nationalfuse.com/wp-content/uploads/2022/04/common-fuse-markings.pdf
