Arco Marine Zeus 24V 7kW Isolated Ground Alternator

The ARCO Zeus 24V 7kW marine alternator is engineered to deliver exceptional high amperage for cruising and higher RPMs, powering demanding boat electrical systems with reliability and efficiency.

Key Features & Benefits

• Voltage: 24V
• Continuous Power: 7kW for robust charging and system support
• Isolated Ground: Enhances safety and minimizes electrical noise for sensitive electronics
• High Amperage at Low to Mid RPMs: Over 3kW (~109A) at just under 3,000 RPM
• Even Higher Output at High RPMs: Almost 6kW (~218A) at under 6,000 RPM

Designed for marine environments, this alternator provides clean power and stable voltage regulation to keep batteries charged and essential systems running smoothly on long passages or day trips alike.

Why It Matters on Your Boat

• Supports critical systems — lighting, navigation, communication, and appliances without compromise
• Isolated ground reduces interference with helm electronics and radios
• Rugged construction built to withstand harsh marine conditions

Upgrade to the ARCO Zeus 24V 7kW with Isolated Ground for dependable, high-output charging that ensures your vessel stays powered when you need it most.

Zeus 24V 7kW 3.15 Alternator with Isolated Ground

The ARCO Zeus 24v 7kW alternator generates extremely high amperage at cruising and higher RPMs. This alternator continuously generates over 3kW (109 Amps) at just under 3,000 alternator RPM and almost 6kW (218 Amps) at under 6,000 RPM. In real-world terms, a marine diesel engine at 1,500 RPM with a 2:1 pulley ratio generates over 3kW, and a Mercedes Sprinter at 1,800 RPM with a 3.21:1 ratio generates over 6kW!

The ARCO Zeus 24v 7kW alternator turns on for cruising or at mid to higher RPMs, runs cooler, and provides more power than older designs that are larger and heavier. The newest generation of 24V performance has arrived.

Competitor’s 24V alternators utilize a 12V rotor and field current which is less efficient and limits output at all RPMs. ARCO utilizes a native 24V rotor and field current. This results in our 24V alternator running cooler than competitor’s 24V alternators, having a direct impact on the alternator lifespan.

Features:

• Engineered for high energy production.
• Suitable for marine, RV, military, and commercial applications.
• Rapidly charges large battery banks.
• Coolest operating temperatures for increased performance:
• Heat shedding coatings
• Rectifier located on housing exterior
• Dual cooling fans
• OEM components
• Optimized for performance at idle speeds.
• Reduces the need for a generator by creating additional power with your engine.
• Unleash peak performance with E-Coat/Cerakote, keeping the high amp alternator cooler for sustained amperage output.
• Use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging.
• SAE J1171 Certified.
• 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:

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