ARCO Marine Zeus A275L 3.15 Alternator w/Isolated Ground Terminal Block [4019]

Zeus A275L 3.15 Alternator with Isolated Ground and Terminal Block

This alternator packs the most power in its size and class. It's a real powerhouse!

Features:

• Designed to generate high energy.
• Great for marine, RV, military, and commercial uses.
• Quickly charges large battery banks.
• Operates at cool temperatures for better performance.
• Has heat-shedding coatings.
• The rectifier is on the housing exterior.
• Comes with dual cooling fans.
• Uses OEM components.
• Performs well at idle speeds.
• Creates extra power with your engine, reducing the need for a generator.
• E-Coat/Cerakote keeps it cool for steady amperage output.
• Pair with the ARCO Zeus Bluetooth Alternator Regulator for top performance or lithium battery charging.
• SAE J1171 Certified.
• Available with internal or 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: 110°C / 230°F

Mounting Application:

• Replaces most small case styles using a 3.15' saddle style mount (e.g., Hitachi, Lucas, Mitsubishi). Most Yanmars. Requires Standard single 'V' belt upgrading to a Serpentine System

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Quick Guide (pdf)
Brochure (pdf)

Using the ARCO Marine Zeus A275L 3.15 Alternator is quite straightforward. First, make sure it's properly mounted. It can replace most small - case alternators using a 3.15' saddle style mount. If you have a Yanmar engine, it'll work great too, but you'll need to upgrade the standard single 'V' belt to a Serpentine System. For optimal performance, you can use the ARCO Zeus Bluetooth Alternator Regulator, especially when charging lithium batteries. When it comes to maintenance, keep an eye on the operating temperature. The alternator has heat - shedding coatings and dual cooling fans, but it's best not to let it exceed the maximum continuous operating temperature of 110°C / 230°F. Also, check the pulley hardware regularly to ensure it's tightened properly. If you notice any issues with the charging or performance, refer to the quick guide or brochure (available in pdf format). And remember, this product is proudly made in the U.S.A., so you can trust its quality.