ARCO Marine Zeus A225S 1-2 Alternator w/Regulator [A225S-12-SF12-IE-49K6]

Zeus A225S 1'-2' Alternator with Regulator

This alternator offers the highest power output in its size and class. It's engineered for high energy production and suits marine, RV, military, and commercial uses.

Key Features:

• Designed for high energy generation.
• Versatile for various applications.
• Quickly charges large battery banks.
• Operates at cooler temperatures, 8 - 20% cooler than existing alternators, thanks to heat - shedding coatings, external rectifier, and dual cooling fans.
• Uses OEM components.
• Performs well at idle speeds.
• Creates extra power with your engine, reducing the need for a generator.
• The E - Coat/Cerakote coating keeps it cooler and provides more amperage over time.
• Pair with an ARCO Zeus Bluetooth alternator regulator for maximum performance or lithium battery charging.
• SAE J1171 certified and proudly made in the USA.

Technical Details:

• Voltage: 12v
• Field Type: P
• Rotor Poles: 16
• Stator Size: 130mm
• Frame Size: Small
• Weight: 12lbs/6.7kg
• Regulation: Internal/External
• 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

Mounting:

• Replaces most domestic styles with a single 1 or 2” mounting foot (e.g., Motorola, Prestolite).

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Owner's Manual (pdf)
Brochure (pdf)

Using the ARCO Marine Zeus A225S 1 - 2 Alternator with Regulator is quite straightforward. First, make sure to check the mounting application. It can replace most domestic - style alternators with a single 1 or 2” mounting foot. Once it's properly mounted, connect it to your engine and battery as per the standard electrical connections. For maximum performance, especially when charging lithium batteries, use an ARCO Zeus Bluetooth alternator regulator. When it comes to maintenance, keep an eye on the operating temperature. Thanks to its heat - shedding coatings and dual cooling fans, it runs cooler than many other alternators. But still, regular checks are a good idea. Also, ensure that the pulley and its hardware are tightened properly. The standard pulley comes with included hardware, so make sure it's all in place. If you encounter any issues, don't return it to the place of purchase. Instead, reach out directly to the manufacturer. And always refer to the owner's manual for detailed technical information and any specific instructions.