Product Manual

Application Brief - Dual Circuit™ Switch
Blue Sea Systems' Dual Circuit
TM
Battery Switch
The Dual Circuit
TM
Battery Switch simplifies multi-bank battery switching with a single ON/OFF switch. It eliminates the
confusion surrounding the traditional four-position selector battery switch. The Dual Circuit
TM
Battery Switch is available with
a COMBINE BATTERIES position (Dual CircuitPlus
TM
) and without (Dual Circuit
TM
).
When the Dual Circuit
TM
Battery
Switches are set to ON, current flows
from the Start battery to the Start
circuit, and from the House battery to
the House circuits.
When the Dual Circuit Plus
TM
is set to
COMBINE BATTERIES, current flows
from both House and Start batteries to
House and Start circuits. The
COMBINE BATTERIES function offers
the ability to combine the two battery
banks in the event of a low Start
battery.
There are several advantages to Blue Sea Systems' dual switching technology:
•
Simple ON/OFF switching—The Dual Circuit
TM
Battery Switch makes it possible to switch two battery banks
simultaneously with one simple ON/OFF switch.
• Isolated Start and House circuits—The Dual Circuit
TM
Battery Switch:
- Reduces the chance of fully discharging both batteries
- Protects house electronics from engine starting sags and spikes
- Protects engine electronics controls from stray house line noise
Dual Circuit Plus
TM
solves several battery management problems by isolating House and Start circuits:
• The Dual Circuit Plus
TM
makes it possible to connect and charge both batteries when the alternator is charging
if
the user sets the switch to the COMBINE BATTERIES position. If the batteries are not combined, the House
battery is not being charged.
•
The Dual Circuit
TM
Battery Switch solves the problem of not having a fully charged battery bank in reserve
if
the
user sets the switch to ON when the engine is not running. Automatically charging both batteries continues to
remain a problem.
The reality is that boaters forget to reset their battery switches every time they stop or start their engines or they
simply forget how to properly set the switch for the correct operating mode. Furthermore, today’s boaters want and
expect the greatest possible degree of automatic operation from their boats. The solution is to use Blue Sea
Systems' CL-Series BatteryLink
TM
ACR. When combined with the Dual Circuit
TM
Battery Switch, the BatteryLink
TM
fully automates the sharing of charge sources between two batteries
.
BATTERY 1 BATTERY 2
BATTERY 1 BATTERY 2