ARCO Marine Zeus A225S 1-2 Inch Single Foot Alternator with Isolated Ground Regulator

Zeus A225S 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, running 8-20% cooler than incumbent alternators due to:


• 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. Our advanced coating absorbs less heat, keeping the A225S 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 - 130mm


• Frame Size - Small


• Weight - 12 lbs/5.4 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) - 254 Amps


• Sustained Cruising Output (Hot, 6,000 RPM) - 187 Amps


• Sustained Idle Output (Hot, 3,000 RPM) - 157 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 A225S is a high-performance 12V alternator designed for demanding marine, RV, military, and commercial applications. Engineered for maximum energy output, this alternator features a compact frame size, yet delivers impressive power, making it ideal for charging large battery banks rapidly and efficiently. Its advanced design ensures reliable operation under various conditions, helping to reduce engine load and improve overall electrical system performance.

Built with durability in mind, the Zeus A225S uses OEM components and is coated with a heat-shedding Cerakote or E-coating to withstand harsh environments. The alternator runs 8-20% cooler than traditional models thanks to dual cooling fans, external rectifiers, and heat dissipation coatings, allowing for increased longevity and sustained amperage output. Its internal/external regulation options provide versatile installation, while an optional Bluetooth regulator maximizes performance and enhances lithium battery charging capabilities.

This alternator is certified SAE J1171, ensuring compliance with industry standards. Its design includes a 16-pole rotor, a 130mm stator, and a lightweight small frame, weighing approximately 12 pounds. It features a standard 49mm multi-groove pulley, M8 side mount battery post, and a maximum RPM of 19,000, delivering up to 254 amps at cold start, with sustained outputs over 150 amps during operation. The unit is optimized for idle speeds, providing reliable power without excessive engine load, and is built in the USA to meet strict quality standards.

Whether replacing existing alternators or installing new systems, the ARCO Marine Zeus A225S offers unmatched power density and durability. Its robust diodes, efficient cooling system, and versatile regulation options make it suitable for a wide range of applications, from marine vessels to heavy-duty vehicles. This alternator is an excellent choice for those seeking a reliable, high-output power source that can withstand tough environments and support advanced electrical needs.

Features:

• Engineered for high energy production

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

• Rapidly charges large battery banks

• Runs 8-20% cooler than traditional alternators due to heat-shedding coatings and dual cooling fans

• Exterior rectifier design enhances heat dissipation

• OEM components ensure durability and reliability

• Optimized for performance at idle speeds

• Reduces engine load by generating additional power

• Advanced E-Coat/Cerakote coating for sustained amperage output

• Bluetooth regulator compatibility for maximum performance

• SAE J1171 certified

• Multiple regulation options: internal/external with adaptor

• Made in the USA for quality assurance