High Output Marine Alternator for Large Battery Banks and Engine-Driven Charging

The ARCO Zeus high output alternator is built for marine, RV, commercial and other demanding engine-driven charging systems where substantial battery charging capacity is required. Its large-frame construction combines an externally mounted rectifier, dual cooling fans and heat-dissipating surface treatment to manage operating temperature during sustained charging. Strong output at lower engine speeds supports battery replenishment while underway or at idle, helping reduce reliance on a separate generator. This variant uses a J180 mounting configuration with isolated ground and external regulation, allowing integration with a compatible alternator regulator for controlled charging of lead-acid and lithium battery systems.

Key Features

  • High-output battery charging: Supports rapid replenishment of large house battery banks in marine, RV and commercial electrical systems.
  • Strong idle performance: Maintains substantial charging output at lower alternator speeds where conventional alternators may produce significantly less current.
  • External regulation: Intended for use with a compatible external alternator regulator, allowing charging behaviour to be matched to the connected battery system.
  • Lithium charging compatibility: Can be integrated with a suitable external regulator for controlled charging of lithium battery installations.
  • Enhanced thermal management: External rectifier placement, dual cooling fans and heat-dissipating surface treatment help control temperature during sustained operation.
  • Isolated ground configuration: Separates the alternator ground from the housing for installations requiring an isolated electrical return path.
  • J180 mounting: Suitable for compatible engines using the established saddle-style alternator mounting arrangement.
  • Marine certification: Certified for ignition-protected marine applications.
  • Engine-driven energy production: Generates substantial charging power from the propulsion engine, reducing dependence on a separate generator in appropriately configured electrical systems.
  • Replaceable regulation architecture: External regulation provides additional flexibility for advanced charging and battery-management installations.

The alternator is suited to installations requiring sustained engine-driven charging, high battery demand and external charge regulation, particularly in marine and mobile power systems.

Voltage 12 V
Maximum Output – Cold 311 A at 9,000 alternator RPM
Sustained Cruising Output – Hot 227 A at 6,000 alternator RPM
Sustained Idle Output – Hot 198 A at 3,000 alternator RPM
Default Output Voltage 14.1 V
Housing 4 in J180 saddle
Regulation External only
Ground Type Isolated ground
Field Type P-Type
Rotor Poles 16
Stator Size 138 mm
Frame Size Large
Cut-In Speed 1,061 alternator RPM
Maximum Alternator Speed 19,000 RPM
Maximum Continuous Operating Temperature 110 °C
Battery Post M8 threaded side-mount post
Standard Pulley 49K6, 6-groove, 49 mm
Pulley Shaft 17 mm diameter × 25 mm long, M17 × 1.5 thread
Pulley Hardware M17 × 1.5 × 24 mm nut with 18 mm ID × 29 mm OD washer
Diodes 6 positive and 6 negative, 50 A avalanche rated
Weight 6.7 kg
Finish Black Cerakote or E-coating
Certification SAE J1171
SKU ARC.4023
Model # 4023
UPC/EAN 695845769955.00
Brand Arco Marine
Shipping Weight 7.0000kg
Shipping Width 0.180m
Shipping Height 0.150m
Shipping Length 0.220m
Shipping Cubic 0.005940000m3
Unit Of Measure ea

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