Ancor
Ancor Standard Duplex Cable - Flat 16/2 AWG - 2 x 1mm² Red/Black -Sold by the Foot
MPN: 1217-FT
$1.69
In Stock
ARCO Marine
ARCO Marine BI-1203-3A Battery Isolator - 120A - 1 Alternator, 3 Battery
In StockNewSKU: BI-1203-3A
$159.31$218.07CLOSEOUTper unit
1
Secure Checkout
Shipping Available
Fast Processing
Clearance Sale
Save $58.76 — Now $159.31
Description
BI-1203-3A Battery Isolator - 120A - 1 Alternator, 3 Battery
The Arco Marine BI-1203-3A is an inboard/outboard battery isolator that can handle 1 alternator, 3 batteries, and 120A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.
*Includes exciter terminal
Features:
- 1 alternator, 3 batteries, 120A max
- Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected dire
Accessories
No accessories listed for this product.
Specifications
| SKU | BI-1203-3A |
| UPC | 693006007496 |
| Brand | ARCO Marine |
| Category | Electrical |
| Country of Origin | 159.31 |
| Weight | 2.9 |
| Dimensions | 8 x 5 x 4 |
| Status | Active |
| Last Synced | 8/17/2026, 1:13:40 AM |
Compliance & Shipping
Non-Returnable
Product Literature
Customer Reviews
0.0
0 reviews
5
0
4
0
3
0
2
0
1
0
Only customers who purchased this item can write a review.
No reviews yet. Purchased this item? Be the first to review it.
Frequently Bought Together
Compare Key Features
| Feature |  ARCO Marine BI-1203-3A Battery Isolator - 120A - 1 Alternator, 3 Battery CURRENT |  Victron Argo Diode Battery Isolator - 160AMP - 2 Batteries |  Victron Argo FET Battery Isolator - 100AMP - 2 Batteries |  Victron Argofet Battery Isolator 100-3 3 Batteries - 100AMP |  ProMariner ProSafe FAILSAFE 60amp Galvanic Isolator |
|---|---|---|---|---|---|
| Price | $159.31 | $90.10 | $100.30 | $114.75 | $575.44 |
| Brand | ARCO Marine | Victron Energy | Victron Energy | Victron Energy | ProMariner |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 2.9 | 2.51 | 3.28 | 3.21 | 4.6 |
| Dimensions | 8 x 5 x 4 | 7 x 6 x 3 | 10 x 6 x 3 | 12 x 7 x 3 | 13 x 8 x 4 |
| SKU | BI-1203-3A | ARG160201020 | ARG100201020 | ARG100301020R | 22074 |
| Country | 159.31 | INDIA | INDIA | INDIA | CHINA |
| View Item | View Item | View Item | View Item | View Item |
You Might Also Need
Ancor
Ancor Standard Duplex Cable - Flat 10/2 - 2x5mm² - Red/Black - Sold By The Foot
MPN: 1211-FT
$3.82
In Stock
Pacer
Pacer White Triplex Cable - 14/3 AWG - Black/Green/White - Sold by the Foot
MPN: W14/3-FT
$1.36
In Stock
Blue Sea Systems
Blue Sea 5026 ST Blade Fuse Block w/Cover - 12 Circuit w/Negative Bus
MPN: 5026
$62.89
In Stock
Blue Sea Systems
Blue Sea 7184 60 Amp Circuit Breaker Surface Mount 285 Series
MPN: 7184
$67.99
In Stock
Bluewater
Bluewater 19mm Electronic Deutsch Connector w/5-Wire Pigtal - Nav/Anchor - 4' Lead
MPN: 9057-4914-248
$20.32
In Stock
Pacer
Pacer 6/2 AWG Safety Duplex Cable - Flat Cable - Red/Yellow - Sold By The Foot
MPN: W6/2RYW-FT
$6.03
In Stock
More from ARCO Marine
View All
ARCO Marine
ARCO Marine Premium Replacement Alternator w/50mm Multi-Groove Pulley
MPN: 20815
$423.80
In Stock
ARCO Marine
ARCO Marine Premium Replacement Alternator w/65mm Multi-Groove Pulley - 12V 70A
MPN: 20800
$3.99
In Stock
ARCO Marine
ARCO Marine Premium Replacement Alternator w/Single-Groove Pulley - 12V, 70A
MPN: 20810
$186.84
In Stock
ARCO Marine
ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A
MPN: 60050
$8.51
In Stock
ARCO Marine
ARCO Marine Premium Replacement Universal Alternator w/Single Groove Pulley - 12V 55A
MPN: 60075
$20.74
In Stock
ARCO Marine
ARCO Marine Premium Replacement Alternator w/Multi-Groove Pulley - 12V 55A
MPN: 60055
$2.73
In Stock
ARCO Marine
ARCO Marine Zeus A275L J180 4" Alternator w/Isolated Ground & Terminal Block
MPN: 4023
$1062.16
In Stock
CLEARANCEARCO Marine
ARCO Marine Zeus A275L 1"-2" Single Foot Alternator w/Terminal Block
MPN: 4027
$809.60
$1124.20
In Stock
ARCO Marine
ARCO Marine Zeus A225S 3.15 Alternator w/Isolated Ground & Terminal Block
MPN: 4011
$849.92
In Stock
ARCO Marine
ARCO Marine Zeus A275L N62 Alternator w/Clutch Pulley & Terminal Block
MPN: 4026
$1007.93
In Stock
Related Products
Victron Energy
Victron Argo FET Battery Isolator - 200AMP - 2 Batteries
MPN: ARG200201020R
$119.85
In Stock
Victron Energy
Victron Galvanic Isolator VDI-32A 32A Max Waterproof (Potted)
MPN: GDI000032000
$249.05
In Stock
Victron Energy
Victron Argodiode Battery Isolator 80-2AC - 2 Batteries - 80A
MPN: ARG080201000
$50.15
In Stock
Victron Energy
Victron Argo Diode Battery Isolator - 160AMP - 2 Batteries
MPN: ARG160201020
$90.10
In Stock
Victron Energy
Victron Argo FET Battery Isolator 200-3 3 Batteries - 200AMP
MPN: ARG200301020
$140.25
In Stock
ProMariner
ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V
MPN: 23121
$215.04
In Stock
Customers Also Viewed
Frequently Asked Questions
Price
$159.31