ARCO Marine Zeus A8000-48V 8kW 3.15 Alternator w/Isolated Ground [4601]

Zeus A8000-48V 8kW 3.15 Alternator with Isolated Ground

The ARCO Zeus A8000-48V alternator is a game-changer. It starts at lower RPMs, runs cooler, and delivers more power than bulkier 48V alternators. At 2,500 RPM, it continuously generates over 3kW (55 Amps), and at 4,000 RPM, almost 6kW (111 Amps). In real-world use, a marine diesel engine charging at 1,200 RPM with a 3.13:1 pulley ratio generates over 5kW (97 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio generates over 3kW (55 Amps).

Many competitor alternators use 12V rotors for 48V systems, which is inefficient and limits output. With them, your external smart regulator may need to reduce the field by up to 78%. Incorrect adjustment can damage the unit and other system components. ARCO uses a native 48V rotor and field current, allowing our alternator to run cooler and have a longer lifespan.

Features:

• Designed for high energy production.
• Great for marine, RV, military, and commercial use.
• Quickly charges large battery banks.
• Low operating temperatures for better performance:
• Heat-shedding coatings
• Externally located rectifier
• Dual cooling fans
• OEM components
• Optimized for idle speed performance.
• Creates extra power with your engine, reducing the need for a generator.
• E-Coat/Cerakote keeps the high-amp alternator cool for steady amperage output.
• Use the ARCO Zeus Bluetooth Alternator Regulator for top performance or lithium battery charging.
• SAE J1171 Certified.
• Made in the U.S.A.

Technical Specifications:

• Voltage - 48v
• 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 - 1,920 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 53.5v - 180 Amps - 9,360 Watts – 14.8 kW PTO
• Sustained Cruising Output (Hot, 6,000 RPM) at 53.5v - 138 Amps - 7,383 Watts – 10.5 kW PTO
• Sustained Idle Output (Hot, 2,500 RPM) at 53.5v - 78 Amps 4,173 Watts – 6kW PTO
• Max Continuous Operating Temperature - 100°C / 212°F

Mounting Application:

• Replaces most small case styles using a 3.15” J180 saddle style mount (e.g., Hitachi, Lucas, Mitsubishi) Most Yanmars.

- cis2:mm1pm5ht -
Quick Guide (pdf)
Brochure (pdf)

Using the ARCO Zeus A8000-48V alternator is straightforward. First, make sure to mount it properly using the 3.15” J180 saddle style mount, which can replace most small case styles. Check that the pulley and hardware are installed correctly as per the specifications. When using it, keep in mind that it starts working at 1,920 Alternator RPM. You can expect great power output at different RPM levels. For maximum performance or when charging lithium batteries, use the ARCO Zeus Bluetooth Alternator Regulator. As for maintenance, keep an eye on the operating temperature. The max continuous operating temperature is 100°C / 212°F. If it gets too hot, check the cooling system, including the heat-shedding coatings, rectifier, and dual cooling fans. Also, make sure the components are clean and free from any debris. If you notice any unusual noises or a drop in performance, it's a good idea to have it checked by a professional. With proper use and maintenance, this alternator will serve you well for a long time.