What DC switch / circuit breaker for > 48v DC?

[JoeHarley13]

Hi everyone! I see a number of people using the 330w panels (like the ones available from Northern Arizona Wind and Sun) in a series-parallel configuration. These panels have a Voc of around 41v. So a 1,320 watt system consisting of 4 panels in a 2S2P configuration will have a Voc of 82v and a Vmp around 69v.

All of the DC switches and circuit breakers I have seen are only rated for 48v. What are you guys using?

These Victron Controllers are often rated at 100 and 150v input but I don’t see how to isolate the panels should the need arise. I assume at 69v or higher, say 3S of 123v would arc and destroy these 48v switches. Can someone point me to the switches they are using?

Note: I am aware of the dangers of DC > 50v, that is why I am being cautious.

Thanks,
Scott

[gbkims]

Hi everyone! I see a number of people using the 330w panels (like the ones available from Northern Arizona Wind and Sun) in a series-parallel configuration. These panels have a Voc of around 41v. So a 1,320 watt system consisting of 4 panels in a 2S2P configuration will have a Voc of 82v and a Vmp around 69v.

All of the DC switches and circuit breakers I have seen are only rated for 48v. What are you guys using?

These Victron Controllers are often rated at 100 and 150v input but I don’t see how to isolate the panels should the need arise. I assume at 69v or higher, say 3S of 123v would arc and destroy these 48v switches. Can someone point me to the switches they are using?

Note: I am aware of the dangers of DC > 50v, that is why I am being cautious.

Thanks,
Scott

Midnite Solar-MNEPV and MNEDC circuit breakers, DC rated to 150V.

http://www.midnitesolar.com/products...tName=Breakers

[JoeHarley13]

Midnite Solar-MNEPV and MNEDC circuit breakers, DC rated to 150V.

http://www.midnitesolar.com/products...tName=Breakers

That is exactly what I was looking for. THANKS!
They have the breakers: http://www.midnitesolar.com/productP...Order=18&act=p

and a nice little box for 2 circuit breakers: http://www.midnitesolar.com/productP...Order=18&act=p

[JoeHarley13]

Midnite Solar-MNEPV and MNEDC circuit breakers, DC rated to 150V.

http://www.midnitesolar.com/products...tName=Breakers

Thanks, that was exactly what I was looking for.