Description
ARCO Zeus 8kW 48V Alternator for Yanmar | Boat Supply Store
This ARCO Marine Zeus A8000-48V alternator is engineered to rapidly charge substantial 48V battery banks, significantly reducing reliance on onboard generators for vessels operating in demanding marine environments. Its native 48V rotor design ensures cooler operation and superior efficiency, delivering 78 Amps sustained output at hot idle and 138 Amps sustained cruising output. The unit features a robust black E-coating finish and is designed for Yanmar Common Rail engines introduced after 2013, ensuring consistent high amperage delivery for critical onboard systems.
Key Features
- Rapidly charges large 48V battery banks
- Coolest operating temperatures for increased performance
- Optimized for performance at idle speeds
- Reduces the need for a generator
- Engineered for high energy production
- Sustained high amperage output due to E-Coat/Cerakote finish
- SAE J1171 Certified for marine safety
- Proudly made in the U.S.A.
Specifications
| Product Specifications | |
|---|---|
| Voltage | 48V |
| Max Output (PTO) | 14.8 kW |
| Max Output (Cold) | 180 Amps |
| Sustained Cruising Output (Hot) | 138 Amps |
| Sustained Idle Output (Hot) | 78 Amps |
| Rotor Poles | 16 |
| Stator Size | 138mm |
| Frame Size | Large |
| Weight | 15.89lbs/7.2kg |
| Regulation | External Regulation Only |
| Finish | Black E-coating |
| Alternator RPM Cut-In | 1,920 |
| Max Alt RPM | 19,000 |
| Battery Post Thread | M8 |
| Pulley Type | 49K6 Standard Pulley |
| Shaft Diameter | 17mm |
| Pulley Hardware | M17 x 1.5 |
| Diodes | 6 positive/6 negative 80A Rated Avalanche Diodes |
| Max Continuous Operating Temperature | 100C/212F |
| Engine Compatibility | Yanmar Common Rail Engines (post-2013) |
Who This Is For
Marine diesel engine owners with Yanmar Common Rail engines (post-2013) seeking to rapidly charge large 48V battery banks and improve overall electrical system performance. Ideal for reducing generator reliance and enhancing power availability, especially at lower engine RPMs.
How It Compares
| Feature | ARCO Zeus 8kW 48V Alternator for Yanmar | Competitor |
|---|---|---|
| Max Output (Cold) | 180 Amps | 90 Amps |
| Sustained Cruising Output (Hot) | 138 Amps | Not specified, typically lower than ARCO |
| Sustained Idle Output (Hot) | 78 Amps | Not specified, typically lower than ARCO |
| Voltage | 48V | 48V |
| Regulation | External Only | External Only |
| Weight | 15.89lbs/7.2kg | — |
| Engine Compatibility | Yanmar Common Rail Engines (post-2013) | Various marine diesel engines |
Common Concerns Answered
What is the sustained output of the ARCO Marine Zeus A8000-48V alternator at idle?
The ARCO Marine Zeus A8000-48V alternator provides a sustained output of 78 Amps at hot idle, ensuring critical systems remain powered even at low engine speeds.
Does the ARCO Marine Zeus A8000-48V alternator require an external regulator?
Yes, this alternator requires an external smart regulator. While this adds to the initial system cost and complexity, it allows for precise control and optimization of battery charging for demanding 48V systems.
What are the benefits of ARCO's native 48V rotor design compared to competitors?
ARCO's native 48V rotor design leads to cooler operation, increased efficiency, and superior power output at lower RPMs, directly translating to better performance and extended lifespan compared to alternators that adapt 12V rotors.
Frequently Asked Questions
What is the maximum alternator RPM for the ARCO Marine Zeus A8000-48V?
The maximum alternator RPM for the ARCO Marine Zeus A8000-48V is 19,000 RPM.
What type of engines is the ARCO Marine Zeus A8000-48V alternator designed for?
The ARCO Marine Zeus A8000-48V alternator is specifically designed for Yanmar Common Rail engines introduced after 2013, including models like the JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, and 4JH110.
What is the sustained cruising output of the ARCO Marine Zeus A8000-48V alternator?
At operating temperature (hot), the ARCO Marine Zeus A8000-48V alternator delivers a sustained cruising output of 138 Amps.
What is the cut-in RPM for the ARCO Marine Zeus A8000-48V alternator?
The ARCO Marine Zeus A8000-48V alternator begins producing power at 1,920 Alternator RPM.
What is the maximum continuous operating temperature for this alternator?
The maximum continuous operating temperature for the ARCO Marine Zeus A8000-48V alternator is 100°C (212°F).
