ARCO Marine Zeus 24V 4kW Low Turn On (LTO) 3.15 Alternator w/Isolated Ground (Common Rail) [4402]

Zeus 24V 4kW Low RPM Turn-On (LTO) 3.15 Alternator with Isolated Ground (Common Rail)

The ARCO Zeus 24V 4kW LTO alternator is a game-changer. It starts up at lower RPMs, runs cooler, and delivers more power than those old, bulky alternators. At just under 1,500 RPM, it continuously generates over 1.4kW (51 Amps), and at 2,000 Alternator RPM, it gets close to 2.4kW (87 Amps). In real-world situations, a marine diesel engine idling at 750 RPM with a 2:1 pulley ratio can generate over 1.5kW (55 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio can generate over 2.5kW (91 Amps)!

Unlike competitors' 24V alternators that use a 12V rotor and field current, which are less efficient and limit output at all RPMs, the ARCO Zeus uses a native 24V rotor and field current. This makes it run cooler and extends its lifespan.

Features:

• Designed for high energy production.
• Great for marine, RV, military, and commercial uses.
• Charges large battery banks quickly.
• Cool operating temperatures for better performance: Heat shedding coatings, rectifier on the housing exterior, and dual cooling fans.
• Uses OEM components.
• Optimized for cruising 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 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 - 1,072 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, 50A Rated, Avalanche
• Max Output (Cold, 9,000 RPM) at 27.5V - 144 Amps - 3,960 Watts – 5.7Kw PTO
• Sustained Cruising Output (Hot, 6,000 RPM) at 27.5V - 130 Amps - 3,575 Watts – 5.1Kw PTO
• Sustained Idle Output (Hot, 3,000 RPM) at 27.5V - 108 Amps - 2,970 Watts – 4.2kW 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 4kW alternator is easy. First, make sure it's installed on a Yanmar Common Rail Engine introduced after 2013. Connect it properly according to the technical specifications. You can use the ARCO Zeus Bluetooth Alternator Regulator for maximum performance or when charging lithium batteries. When it comes to maintenance, keep an eye on the operating temperature. Since it has features like heat shedding coatings and dual cooling fans, it should run cool, but if it gets too hot, check for any blockages. Also, regularly inspect the components like the diodes and the pulley hardware. If you notice any issues, refer to the quick guide or brochure for troubleshooting. Remember, this alternator is designed for high - energy production, so it can handle a lot, but always operate it within the specified RPM limits for the best results.