Blue Sea Dual Circuit Plus

Blue Sea Dual Circuit Plus


The Blue Sea Dual Circuit Plus was designed for twin engine configurations.


  • Provides 24 Hour Circuit Protection
  • Provides Main DC Circuit Protection In Addition To High Ampere Load Protection
  • Protects Electronics From Sags And Spikes Caused By Engine Cranking
List Price
Your Price
In Stock

Shipping Information
Return Policy
Why Buy From Fondriest?


  • Allows emergency cross connect between isolated battery banks 
  • Isolates the Engine circuit from the House circuit
  • Simplifies battery switch operation
  • Allows independent battery discharge
  • Addition of an Automatic Charging Relay automates charging both batteries
  • Includes 4218 - Square Format Labels and 4140 - 24 Hour Round Labels
What's Included:

(1) 100A C-Series Flat Rocker Circuit Breaker
(2) 15A Push Button Thermal Circuit Breakers

Image Part # Product Description Price Stock Order
Blue Sea Dual Circuit Plus 8686 Dual Circuit Plus
In Stock

Blue Sea Dual Circuit Plus Reviews

| Write a Review

Be the first to write a review

In The News

First Environmental Monitoring System For Baltimore’s Inner Harbor

Baltimore’s Inner Harbor and the rivers that flow into it are important sources of water to Chesapeake Bay, popular recreation sites and the targets of an ambitious clean-up plan. But the city has for some time lacked an environmental monitoring system for tracking water quality in the harbor continuously. That is about to change, thanks to a collaboration between the U.S. Geological Survey (USGS) and Environmental Protection Agency (EPA). It will lead to the new installation of a suite of sensors that will provide the public and scientists with the first comprehensive, real time look at water quality in the harbor.

Read More

Parasite Behind Yellowstone River Fish Kill Found In Other Rivers

A parasite that caused a massive fish kill in Montana’s Yellowstone River has been found in at least seven other rivers in the state, according to the Bozeman Daily Chronicle . Scientists with the Montana Fish, Wildlife and Parks department made the find. So far, the parasite has been confirmed in the upper and lower Madison, East Gallatin, Bighorn, Stillwater, and Boulder Rivers. It had already been confirmed in the Jefferson and Shields Rivers. The microscopic parasite causes proliferative kidney disease, one of the most serious diseases to impact whitefish and trout. The effect of the disease on Yellowstone’s fish populations is exacerbated by other stressors like near-record low flows, consistent high temperatures and the disturbance caused by recreational activities.

Read More

ESPniagara Tracks Algal Toxins In Lake Erie, Protects Drinking Water

It may have taken 20 years and $20 million to develop, but Lake Erie researchers working to fight harmful algal blooms (HABs) now have a new tool to safeguard drinking water: ESPniagara. The advanced sampler has been called a “lab in a can” for its ability to sample microcystins, the most common algal toxin these days, in almost real time. The big gadget’s name is a mashup between “ESP,” for environmental sample processor, and the name of Admiral Oliver Hazard Perry’s ship during the War of 1812. “We wanted to name it something that was significant to Lake Erie,” said Tim Davis, molecular biologist and lead HABs researcher at the National Oceanic and Atmospheric Administration’s Great Lakes Environmental Research Lab (NOAA GLERL) in Ann Arbor, Mich.

Read More