ARCO Marine Zeus 24V 4kW Low Turn On (LTO) 1-2 Single Foot Alternator w/Isolated Ground [4405]

Zeus 24V 4kW Low Turn On (LTO) Single Foot Alternator with Isolated Ground

The ARCO Zeus 24v 4kW LTO alternator is a game - changer! It starts at lower RPMs, runs much cooler, and pumps out 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 almost hits 2.4kW (87 Amps). In real - world scenarios, 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)!

This alternator represents the latest in 24V performance. Unlike competitors' 24V alternators that use a 12V rotor and field current (less efficient and limiting output), the ARCO 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.
• Keeps cool for better performance with heat - shedding coatings, an externally - located rectifier, and dual cooling fans.
• Uses OEM components.
• Performs optimally at cruising speeds.
• Creates extra power with your engine, reducing the need for a generator.
• The E - Coat/Cerakote keeps it cool for consistent high - amp output.
• Pair with the ARCO Zeus Bluetooth Alternator Regulator for top - notch performance or lithium battery charging.
• SAE J1171 Certified.
• 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:

• Replaces most domestic styles with a single 1” or 2” mounting foot (e.g., Motorola, Prestolite).

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Quick Guide (pdf)
Brochure (pdf)

Using your ARCO Marine Zeus 24V 4kW Low Turn On Single Foot Alternator is easy. First, make sure it's properly mounted. It can replace most domestic - style alternators with a single 1” or 2” mounting foot. Connect it to your engine according to the specifications. You can use the included pulley hardware for the pulley mounting. For best performance, pair it with the ARCO Zeus Bluetooth Alternator Regulator, especially if you're using lithium batteries. When it comes to charging, this alternator is great for large battery banks. It'll charge them up quickly. Just keep an eye on the RPMs. It starts working at lower RPMs and can give you a lot of power even at idle speeds. As for maintenance, check the alternator regularly for any signs of overheating. Since it has heat - shedding coatings, dual cooling fans, and an externally - located rectifier, it runs cool, but it's still a good idea to make sure there's no blockage to the cooling system. Also, keep the alternator clean. Avoid exposing it to extreme conditions beyond its max continuous operating temperature of 100°C / 212°F. If you notice any issues, refer to the quick guide or brochure for troubleshooting tips.