ARCO Marine Zeus A275L 3.15 Alternator w/Case Ground (Common Rail) Terminal Block [4020]

Zeus A275L 3.15 Alternator with Case Ground and Terminal Block

This alternator offers the highest power output in its size and class. It's a top - notch choice for various applications!

Features:

• Designed to generate high energy.
• Perfect for marine, RV, military, and commercial uses.
• Quickly charges large battery banks.
• Operates at cool temperatures for better performance.
• Has heat - shedding coatings.
• 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 continuous high amperage output.
• Pair with the ARCO Zeus Bluetooth Alternator Regulator for best performance or lithium battery charging.
• SAE J1171 Certified.
• Available with internal or external voltage regulator.
• Proudly made in the USA.

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:

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

Quick Guide (pdf) Brochure (pdf)

Using your ARCO Marine Zeus A275L 3.15 Alternator is straightforward. First, make sure it's properly mounted on your Yanmar Common Rail engine introduced after 2013. Check that all the connections are secure, especially the battery post and pulley. You can use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or when charging lithium batteries. When it comes to charging, this alternator can quickly charge large battery banks, so you don't have to wait long. Just let your engine run, and it'll do its job. As for maintenance, keep an eye on the operating temperature. The alternator has heat - shedding coatings and dual cooling fans to keep it cool, but if it starts getting too hot, there might be an issue. Check for any signs of wear on the pulley, belts, and components regularly. Also, make sure the rectifier on the housing exterior is clean and functioning well. And don't forget, it's SAE J1171 Certified, so you can trust its quality. Just follow these simple steps, and your alternator will serve you well for a long time.