High-output marine alternator delivering powerful charging for large battery systems

This high-output marine alternator is engineered to deliver reliable charging performance for demanding onboard electrical systems. Designed for marine, RV, and commercial applications, it provides up to 275 A of charging capacity to rapidly replenish large battery banks while maintaining stable performance across varying engine speeds. The large-frame design incorporates external voltage regulation capability, an isolated ground configuration, and efficient thermal management to support sustained high-current output. Featuring a side battery post connection, DF315 saddle mounting configuration, and a 49 mm K6 serpentine pulley, it is optimised for installations requiring robust power generation and compatibility with advanced battery technologies including lithium systems.

Key Features

  • High 275 A Charging Output: Provides powerful charging capacity to rapidly replenish large battery banks and support high electrical loads on marine vessels and mobile power systems.
  • Externally Regulated Design: Supports use with an external voltage regulator, enabling precise charging control and optimisation for various battery chemistries including lithium.
  • DF315 Saddle Mount Configuration: Designed with a 3.15-inch DF315 saddle mount for compatibility with many marine engine installations.
  • Side Battery Post Connection: M8 threaded side-mounted battery post provides a secure electrical connection and flexible installation routing.
  • 49 mm K6 Serpentine Pulley: Six-groove serpentine pulley ensures reliable belt engagement and efficient power transfer for high-output charging.
  • Large-Frame High-Efficiency Construction: Utilises a heavy-duty large frame with high-density stator design to maximise energy production and durability.
  • Optimised Thermal Management: Advanced cooling design helps maintain lower operating temperatures for consistent high-current output.
  • High Idle Charging Capability: Engineered to produce strong charging performance even at lower engine speeds, ensuring batteries continue charging during idle operation.

Reliable high-capacity charging performance helps support modern onboard electrical systems while reducing the need for additional generator power.

Electrical
Voltage 12 V DC
Output Current 275 A
Output Voltage 14.1 V (Default)
Mechanical
Mounting Type 3.15" DF315 Saddle Mount
Battery Post M8 Thread Post, Side Mount
Pulley Type 49 mm K6 (6-Groove)
Frame Size Large Frame
Stator Size 138 mm
Configuration
Regulation Type External Regulation
Ground Type Isolated Ground
SKU ARC.4019
Model # 4019
UPC/EAN 695845960956.00
Brand Arco Marine
Shipping Weight 7.0000kg
Shipping Width 0.180m
Shipping Height 0.150m
Shipping Length 0.230m
Shipping Cubic 0.006210000m3
Unit Of Measure ea

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