Guest Battery Isolators

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Battery Isolators

Guest battery isolators allow you to connect your engine alternator to both batteries or banks of batteries for independent battery charging. They’ll also prevent a higher charged battery from discharging into another, lower charged battery, by keeping both batteries electrically isolated from one another.

These solid-state devices act as electronic valves that keep your charging system operating safely. When your engine(s) is running, the batteries are charged automatically. When used with a Guest non-field disconnect battery switch, you have complete control over battery selection for power use, plus alternator protection provided by the isolator. Models are available for systems with 10-120 amp alternators.

Part No.

Description (Click to view & order)

Price

gue2401A

gue2402

gue2403

gue2404

gue2430

gue2432

gueU3059

Selecting the Right Isolator for Your System
The first step in selecting the correct isolator is determining
whether your regulator has isolation diodes. With batteries
connected, ignition (key) “off” and battery switch (if you have
one) “on”, measure the voltage between the reg/aux/61 terminal
and the engine block with a meter set on 20 volt scale. If the
voltage reading is anything other than zero (0), there are no
isolation diodes. If this is the case, be sure to order the required
kit, #U-3059. The chart below lists the appropriate isolator for
specific applications and alternator outputs. For outboard
alternators other than OMC, order Model #2401A.

	MAX. OUTPUT
USAGE	PER ALT.	MODEL	DIMENSIONS
1 Alt/2 Batt	70 amps	#2401A	5-1/2" x 6"
2 Alt/2 Batt	70 amps	#2402	5" x 7"
2 Alt/3 Batt	70 amps	#2403	5" x 7"
1 Alt/3 Batt	70 amps	#2404	4" x 5"
1 Alt/2 Batt	120 amps	#2430	5" x 7"
2 Alt/2 Batt	120 amps	#2431	5" x 13"
2 Alt/3 Batt	120 amps	#2432	5" x 13"
* For alternators without isolation diodes, order required kit #U-3059.

Pyacht.com
222 Severn Avenue
Annapolis, MD 21403

Toll free: 1-877-379-2248
Local: (410) 268-9696
Fax: (410) 268-9625

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