ARCO Marine Zeus A275L 1-2 Inch Single Foot Alternator with Isolated Ground and Regulator

Zeus A275L 1-2 Single Foot Alternator with Isolated Ground Regulator

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 are available with an 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 alternator is designed to deliver the highest power output within its size class, making it ideal for demanding marine, RV, military, and commercial applications. Engineered with advanced features, this alternator ensures rapid charging of large battery banks while maintaining cool operating temperatures for sustained performance. Its robust construction includes heat shedding coatings and dual cooling fans, which facilitate efficient heat dissipation, prolonging component life and enhancing reliability. The rectifier is conveniently located on the exterior housing, simplifying maintenance and ensuring optimal cooling.

This alternator is built with OEM components and is compatible with ARCO Zeus Bluetooth regulators, providing maximum performance and flexibility, including lithium battery charging. It features a large frame size with a 138mm stator and rotor poles, delivering an impressive maximum output of 311 amps at cold start, and sustaining over 200 amps during normal operation. The unit is SAE J1171 certified and features a black Cerakote or E-coating finish, offering resistance to harsh environmental conditions. With a regulation system capable of internal or external regulation, it offers adaptable installation options, including an adaptor for external regulation.

Designed for ease of installation and durability, the Zeus A275L uses a standard 6-groove pulley with a 49mm diameter, and a side-mount M8 threaded battery post. Its high-quality diodes are rated at 50A with avalanche capability, ensuring reliable power management. The alternator is optimized for performance at idle speeds, reducing engine load while providing ample power, thereby decreasing the need for additional generators. Made in the USA, this alternator is built to meet rigorous standards and is suitable for replacing most domestic styles with a single or dual foot mounting system, requiring only a standard V-belt upgrade. Whether for marine or industrial use, the ARCO Marine Zeus A275L delivers exceptional power, durability, and efficiency in a compact design.

Features:

• High energy output engineered for demanding applications

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

• Rapidly charges large battery banks

• Operates at cooler temperatures for increased performance

• Heat shedding coatings for enhanced durability

• Exterior-mounted rectifier for easy maintenance

• Dual cooling fans for efficient heat dissipation

• OEM components ensure quality and reliability

• Optimized for performance at idle speeds

• Reduces engine load by generating additional power

• Unleashes peak performance with E-Coat/Cerakote coating

• Compatible with ARCO Zeus Bluetooth regulator for maximum performance

• SAE J1171 certified for safety and quality standards

• Models available with internal or external voltage regulation

• Proudly manufactured in the U.S.A.