Solar Panel Breaker

[mrgrayaz]

All,

What are you using for the solar panel side breaker? I'm pushing 65V through my current series/parallel setup so the usual blue sea disconnect everyone seems to use doesn't work. I am also looking to expand my 600w setup (always!) so will probably go higher voltage in the future.

I have one of these on the battery side, but only rated for 48v:
https://www.amazon.com/Tocas-Circuit...ds=48v+breaker

Everything else I search above 48v goes to normal house hold breakers (requiring a breaker box).

[ByeTheWay]

I use a 48v 100 amp breaker although my system is 24v, off the roof.

[twinboat]

I have my 3, 325 watt, 36 volt panels run in series.

Since I would never design or use a breaker or fuse that was less then the panels maximum output, I used a 15 amp, 120 volt switch.

[Smitty77]

In addition to other advice, I'll add that we have inline individual circuit breakers from the panels down to the controller. This way I can turn off/on panels at will, to see individual panel performance. (X's 5 Panasonic High Efficiency 240W 48V panels. Left room in the CB box, for two more panels CB's - if I ever decide to add more panels.)

Yep, a bit more inline resistance, but small overhead price to pay for added control of the system.

Best,
Smitty

[ALLOY]

BlueSea C Series Breakers
Maximum Voltage = 80V DC


or


breakers from Midnight Solar



As the voltage creeps up keep the max Voc for the solar controller in mind.

[R.B]

These DC breakers go up to 150 or 300V DC. Blue Sea stuff isn’t built for it. https://www.wholesalesolar.com/circuit-breakers