ARCO Marine Zeus A275L 3.15 Alternator with Isolated Ground and Terminal Block

Zeus A275L 3.15 Alternator with Isolated Ground (Common Rail) 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 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:

• Must be used on Yanmar Common Rail introduced after 2013 (JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110)

The ARCO Marine Zeus A275L 3.15 Alternator is engineered to deliver the highest power output within its size and class, making it an ideal choice for demanding marine, RV, military, and commercial applications. Designed with robust components and advanced cooling features, this alternator ensures reliable performance even under extended operation, providing rapid charging capabilities for large battery banks. Its durable construction includes heat shedding coatings and dual cooling fans that maintain optimal operating temperatures, enhancing overall efficiency and longevity. The exterior-mounted rectifier and heat dissipation technologies allow the alternator to operate cooler, supporting sustained amperage output for high-demand environments. This alternator is compatible with OEM components and can be integrated with the ARCO Zeus Bluetooth Alternator Regulator for maximum performance, including lithium battery charging. Certified by SAE J1171, it meets strict industry standards for quality and safety. The design features a large frame size with a 138mm stator and 16 rotor poles, ensuring consistent power generation at various engine speeds. The alternator's internal/external regulation options and high maximum RPM make it versatile across different engine configurations. The black Cerakote or E-coating finish adds corrosion resistance, suitable for harsh marine environments. With a weight of approximately 15 pounds, it is designed for straightforward mounting on Yanmar Common Rail engines introduced after 2013, specifically models like JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, and 4JH110. The unit features a 6-groove pulley, M8 side mount battery post, and avalanche-rated diodes for reliable operation. Its maximum cold RPM output reaches over 300 amps, with sustained outputs well above 200 amps at typical cruising speeds, ensuring your electrical system remains fully charged and operational during extended use. Made proudly in the USA, this alternator combines performance, durability, and advanced features to meet the rigorous demands of modern marine and industrial applications.

Features:

• Engineered for high energy production and peak performance

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

• Rapidly charges large battery banks for extended use

• Operating temperatures kept cool with heat shedding coatings

• Heat dissipation enhanced by exterior-mounted rectifier and dual cooling fans

• Built with OEM components for reliability and longevity

• Optimized for performance at idle speeds

• Creates additional power, reducing reliance on generators

• Unleashes peak performance with E-Coat/Cerakote coating for cooler operation

• Compatible with ARCO Zeus Bluetooth Alternator Regulator for enhanced control

• SAE J1171 Certified for quality assurance

• Available with internal/external voltage regulation options

• Proudly made in the U.S.A.