DC 150A circuit breaker

[DavidCh]

As I finally approach the completion of my 280ah LifePo4 battery build I am fitting the circuit breaker

I am pretty sure it does not matter but does anyone know if there is a particular orientation for the load and supply?

I will post the details of the build if anyone is interested when its finished but basically its four 280a LifePo4 cells from AliBaba with a JK BMS

Many thanks

David

 

[Bart]

As I finally approach the completion of my 280ah LifePo4 battery build I am fitting the circuit breaker

View attachment 706549

I am pretty sure it does not matter but does anyone know if there is a particular orientation for the load and supply?

I will post the details of the build if anyone is interested when its finished but basically its four 280a LifePo4 cells from AliBaba with a JK BMS

Many thanks

David

I have used a similar breaker before and I couldn't see an orientation so just installed it with the text facing upright and the trip worked fine.

12V-24V DC Home Solar System Waterproof Circuit Breaker Reset Fuse Inverter A+++ | eBay

Ampere range: 20A 30A 40A 50A 60A 80A 100A 150A. Self-Testing & Manual Override. High Current Circuit Breaker. Unique Push Button Reset can also be used as a Kill Switch. 1x 12V-24V DC Auto Audio Circuit Breaker Reset Fuseholder.

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[mitzimad]

lots of reported failures with the chinese circuit breakers on the self build forums is there a reason you cant use a fuse?

 

[DavidCh]

I wanted a combined fuse and disconnect on the battery. The breaker is actually higher rated than the setting in the BMS so that should shut it down first. I will say I had one of these on my boat for the anchor winch and it always behaved flawlessly (apart from tripping at inopportune moments which was more related to trying to lift boulders from the seabed!)