Hello, I've been trying to come up with a solution for how to fuse my 3 panels in parallel. My original intent had been to just use an MC4 3 to1 branch connector with inline 15A MC4 fuses on the positive side. My 3 Panasonic panels use 12AWG and I'm running 8AWG after the branch to my disconnect switch, and then to my Victron MPPT. After reading others experience and learning more about the differences between the only true MC4 (Staubli) and then all the MC4-like versions coupled with problems interchanging them I'm really wanting to just move away from the MC4 connectors and use some simple Blue Sea Busbars with a fuse for each panel on the positive side. The issue I'm running into is a fuse holder. All the larger fuse types (MEGA, ANL, etc.) that would allow for easy busbar to busbar fusing (like a Victron Lynx) are only rated up to 48V, most stop at 32V. So my other options are pigtail type inline cylinder fuse, or blade fuse holders, or din rail mountable cylinder fuse holders. I can't seem to find a source for a quality version of the pigtail inline types, most of the Amazon ones are random low quality ones and I'd gladly pay more for a known brand like BlueSea or Victron I can trust.
Here are the specs for my panels in case it helps
Panel Specs
Max Power (Pmax) 325W
Short Circuit Current (Isc) 6.03A
Open Circuit Voltage (Voc) 69.6V
Maximum Power Current (Ipmax) 5.65A
Maximum Power Voltage (Vpmax) 57.6V
Max system Voltage 600V
Series Fuses 15A
For context this is mounted in a DIY junction box on the roof of a van, so while I do have access if necessary, I won't routinely have easy access to inspect the connections. This is part of the reason why I'd rather not use the MC4 style connectors as it seems safer to just use fuses and bus bars that I can trust.
TL;DR Looking for high quality fusing options for my DIY junction box, using fuses between bus bars for my 3 solar panels connected in parallel. I'd like to find name brand fuse holders meant for something like a boat (or camper) with the intended use being a mobile application subject to vibration. The mounting location for the junction box is under the panels on the roof of my van, so while I do have access if needed I don't have easy regular access for inspection.
Looking for any advice. Thanks!
Here are the specs for my panels in case it helps
Panel Specs
Max Power (Pmax) 325W
Short Circuit Current (Isc) 6.03A
Open Circuit Voltage (Voc) 69.6V
Maximum Power Current (Ipmax) 5.65A
Maximum Power Voltage (Vpmax) 57.6V
Max system Voltage 600V
Series Fuses 15A
For context this is mounted in a DIY junction box on the roof of a van, so while I do have access if necessary, I won't routinely have easy access to inspect the connections. This is part of the reason why I'd rather not use the MC4 style connectors as it seems safer to just use fuses and bus bars that I can trust.
TL;DR Looking for high quality fusing options for my DIY junction box, using fuses between bus bars for my 3 solar panels connected in parallel. I'd like to find name brand fuse holders meant for something like a boat (or camper) with the intended use being a mobile application subject to vibration. The mounting location for the junction box is under the panels on the roof of my van, so while I do have access if needed I don't have easy regular access for inspection.
Looking for any advice. Thanks!
