Negative and positive circuits on one block with a snap-on Lexan insulating cover. Two tin-plated copper bus bars with five #10-32 terminal screws and two large stud terminals on each bus. Meets ABYC and USCG insulation requirements.
This item is a very durable product and well made. I had to replace the original one on my boat due to salt water corrosion/damage caused last year by hurricane Sandy. My local West Marine store didn't have the item in stock however there'll online store did so I was able to order it. It came via UPS ground within 3-4 days, which was great. The price was reasonable as well. I am very pleased with the order and handling of this product. In terms of how well the product functions, I'll have to let you know next season after I wire electronics to it since my boat hasn't been wired for any equipment as of yet due to the boat being a new purchase prior to the storm. It came pretty much bare bones. I didn't give it five stars because I have yet to see how it performs.