ARCO Marine Zeus A275L 12V Single Foot Alternator with Isolated Ground and Terminal Block

Zeus A275L 1-2 Single Foot Alternator with Isolated Ground Terminal Block

The highest power output alternator in its size/class.

Features:

• Engineered for high energy production.


• Suitable for marine, RV, military, and commercial applications.


• Rapidly charges large battery banks.


• Coolest operating temperatures for increased performance.


• Heat shedding coatings


• Rectifier located on housing exterior


• Dual cooling fans


• OEM components


• Optimized for performance at idle speeds.


• Reduces the need for a generator by creating additional power with your engine.


• Unleash peak performance with E-Coat/Cerakote, keeping the A275L cooler for sustained amperage output.


• Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.


• SAE J1171 Certified.


• Models available with internal/external voltage regulator.


• Proudly made in the U.S.A.

Technical Specifications:

• Voltage - 12v


• Field Type - P


• Rotor Poles - 16


• Stator Size - 138mm


• Frame Size - Large


• Weight - 14.9 lbs/6.7 kg


• Regulation - Internal/External (Internally regulated with adaptor for optional external regulation.)


• Output Voltage - 14.1v (Default)


• Finish - (Black) Cerakote or E-coating


• Cut-In RPM - 1,061 Alternator RPM


• Maximum Alt RPM - 19,000


• Battery Post - M8 Thread Post, Side Mount


• Standard Pulley - 49K6 (6-groove, 49mm)


• Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5


• Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included)


• Diodes - 6 positive, 6 negative, 50A Rated, Avalanche


• Max Output (Cold, 9,000 RPM) - 311 Amps


• Sustained Cruising Output (Hot, 6,000 RPM) - 227 Amps


• Sustained Idle Output (Hot, 3,000 RPM) - 198 Amps


• Max Continuous Operating Temperature - 110C / 230F

Mounting Application:

• Replaces most domestic styles using a single 1 or 2 mounting foot (e.g., Motorola, Prestolite). Requires Standard single V belt upgrading to a double V belt or Serpentine System

The ARCO Marine Zeus A275L is a high-performance 12-volt alternator designed for demanding marine, RV, military, and commercial applications. Engineered to deliver maximum power output within its size class, this alternator features advanced cooling technology, heat shedding coatings, and robust OEM components to ensure reliable operation even under strenuous conditions. Its compact design houses dual cooling fans and a rectifier located on the exterior housing, promoting optimal thermal management and enhancing overall durability. The A275L is built to rapidly charge large battery banks, making it an ideal choice for applications requiring sustained high amperage output and efficient energy production. Its design incorporates an internal regulation system with an optional external regulator compatibility, providing flexibility for various electrical setups. The alternator's finish options include Cerakote or E-coating in black, offering corrosion resistance suitable for marine environments. An integrated Bluetooth regulator, compatible with ARCO Zeus Bluetooth Alternator Regulator, allows for fine-tuned performance and lithium battery charging, further optimizing energy management. Certified under SAE J1171 standards, the A275L is manufactured in the USA with quality components that ensure longevity and reliability. Its features include a powerful 16-pole rotor, large stator, and high-capacity diodes rated at 50 amps, supporting maximum cold RPM of 19,000 for peak performance. This alternator is designed to replace most domestic models with a single or dual mounting foot, such as Motorola or Prestolite, and requires a standard V-belt upgrade. Ideal for high-demand electrical systems, the ARCO Marine Zeus A275L provides efficient, cool operation capable of delivering over 300 amps at peak RPM, making it a dependable choice for professional and recreational applications alike.

Features:

• Engineered for high energy production and maximum power output

• Suitable for marine, RV, military, and commercial applications

• Rapidly charges large battery banks for extended use

• Coolest operating temperatures for increased performance and longevity

• Heat shedding coatings improve thermal management

• Rectifier located on housing exterior for efficient cooling

• Dual cooling fans enhance temperature regulation

• OEM components ensure durability and compatibility

• Optimized for performance at idle speeds

• Reduces the need for a dedicated generator by supplementing power output

• Unleash peak performance with E-Coat/Cerakote surface treatments

• Compatible with ARCO Zeus Bluetooth Alternator Regulator for advanced control

• SAE J1171 Certified for quality and safety standards

• Models available with internal or external voltage regulation options

• Proudly manufactured in the U.S.A.