ARCO Marine Zeus 24V 7kW 3.15 Alternator w/Isolated Ground (Common Rail) [4502]

Zeus 24V 7kW 3.15 Alternator with Isolated Ground (Common Rail)

The ARCO Zeus 24V 7kW alternator is a powerhouse. It churns out extremely high amperage when your engine is cruising or running at higher RPMs. At just under 3,000 alternator RPM, it continuously generates over 3kW (109 Amps), and at under 6,000 RPM, it hits almost 6kW (218 Amps). For instance, a marine diesel engine at 1,500 RPM with a 2:1 pulley ratio will generate over 3kW, and a Mercedes Sprinter at 1,800 RPM with a 3.21:1 ratio can generate over 6kW!

This alternator kicks in for cruising or at mid - to - higher RPMs. It runs cooler and packs more power than those old, bulky designs. The new era of 24V performance is here.

Other 24V alternators use a 12V rotor and field current, which is less efficient and limits output at all RPMs. ARCO uses a native 24V rotor and field current, so our 24V alternator runs cooler, directly extending its lifespan.

Features:

• Designed for high - energy production.
• Great for marine, RV, military, and commercial use.
• Quickly charges large battery banks.
• Cool operation for better performance with heat - shedding coatings, an exterior - located rectifier, and dual cooling fans.
• Made with OEM components.
• Performs well at idle speeds.
• Creates extra power with your engine, reducing the need for a generator.
• With E - Coat/Cerakote, it keeps the high - amp alternator cool for steady amperage output.
• Use the ARCO Zeus Bluetooth Alternator Regulator for top - notch performance or lithium battery charging.
• SAE J1171 Certified and proudly made in the U.S.A.

Technical Specifications:

• Voltage: 24V
• Field Type: P
• Rotor Poles: 16
• Stator Size: 138mm
• Frame Size: Large
• Weight: 15.89lbs/7.2kg
• Regulation: External Only
• Finish: (Black) E - coating
• Cut - In RPM: 1,962 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, 80A Rated, Avalanche
• Max Output (Cold, 9,000 RPM) at 27.5V: 284 Amps - 7,810 Watts – 11.2 kW PTO
• Sustained Cruising Output (Hot, 6,000 RPM) at 27.5V: 220 Amps - 6,050 Watts – 8.6kW PTO
• Sustained Idle Output (Hot, 3,000 RPM) at 27.5V: 50 Amps 1,375 Watts – 2kW PTO
• Max Continuous Operating Temperature: 100°C / 212°F

Mounting Application:

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

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Quick Guide (pdf)
Brochure (pdf)

Using the ARCO Zeus 24V 7kW alternator is straightforward. First, make sure it's mounted correctly on a Yanmar Common Rail Engine introduced after 2013, like the JH - CR, 3JH40, etc. When your engine reaches the cut - in RPM of 1,962 alternator RPM, the alternator will start working. It will generate power as your engine runs, especially well at cruising or higher RPMs. For the best performance, you can use the ARCO Zeus Bluetooth Alternator Regulator, which is great for lithium battery charging too. As for maintenance, keep an eye on the operating temperature. The maximum continuous operating temperature is 100°C / 212°F. If it gets too hot, there might be an issue. Also, since it has heat - shedding coatings and dual cooling fans, make sure these components are clean and functioning properly. Check the battery post, pulley, and hardware regularly to ensure they are tight and in good condition. If you notice any strange noises or a drop in power output, it's a good idea to have it checked out. And always remember, this alternator is proudly made in the U.S.A. and is SAE J1171 Certified, so you can trust its quality.