The Arco Starting & Charging 4602 Zeus A8000-48V is an 8kW, 48-volt marine alternator with isolated ground (common rail). It cuts in at lower RPMs, runs cooler, and delivers more power than larger, heavier 48V alternators. It is suitable for marine, RV, military, and commercial applications and is built to charge large battery banks quickly.
Many 48V alternators use a 12V rotor, which is less efficient and limits output at all RPMs. The Zeus uses a native 48V rotor and field current, so it runs cooler, which directly affects alternator lifespan.
Key Features:
- Engineered for high energy production
- Rapidly charges large battery banks
- Heat-shedding coatings, rectifier on the housing exterior, and dual cooling fans for cooler operation
- OEM components
- Optimized for performance at idle speeds
- Reduces the need for a generator by creating additional power from your engine
- E-Coat finish helps keep the high-amp alternator cooler for sustained output
- Works with the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging
- SAE J1171 certified
Output:
- Over 3kW (55 A) continuously at 2,500 alternator RPM
- Almost 6kW (111 A) continuously at 4,000 alternator RPM
- Max output (cold, 9,000 RPM) at 53.5V: 180 A, 9,360 W
- Sustained cruising output (hot, 6,000 RPM) at 53.5V: 138 A, 7,383 W
- Sustained idle output (hot, 2,500 RPM) at 53.5V: 78 A, 4,173 W
Technical Specifications:
- Voltage: 48V
- Field type: P
- Rotor poles: 16
- Stator size: 138mm
- Frame size: Large
- Weight: 15.89 lbs (7.2 kg)
- Regulation: external only
- Finish: black E-coating
- Cut-in speed: 1,920 alternator RPM
- Maximum alternator speed: 19,000 RPM
- Battery post: M8 threaded 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 with 18mm ID x 29mm OD washer (included)
- Diodes: 6 positive, 6 negative, 80A rated, avalanche
- Max continuous operating temperature: 100°C / 212°F
Application: Must be used on Yanmar common rail engines introduced after 2013 (JH-CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110).
