ARCO 24V 4kW LTO DF4, Side Battery Post, Isolated Ground, 49mm K6 Pulley
High-output 24 V alternator with low-rpm activation and sustained high amperage charging for demanding marine and RV battery systems, engineered for reliability and efficiency.
SKU: ARC.4403 | MPN: 4403
SAVE $5.29 (0%)
Vendor Warehouse - Stock availability will need to be confirmed with vendor
High-performance alternator designed for high-demand 24 V charging applications
Engineered for serious marine, RV and off-grid systems, this 24 V high-output alternator delivers class-leading performance at low RPMs for optimal charging even when the engine is idling. With native 24 V rotor technology, rugged cooling, and robust construction, it offers a reliable solution to rapidly charge large battery banks and reduce dependence on generators.
Key Features
- Low turn-on at idle RPM: Begins meaningful output (~51 A) at just under 1,500 rpm for efficient charging in anchored or low-speed conditions.
- High continuous output: Sustains ~108 A (~2.97 kW) at 3,000 rpm under hot conditions, enabling large battery bank replenishment.
- True 24 V rotor design: Native 24 V field current ensures cooler operation and higher efficiency than 12 V-based 24 V variants.
- Built for harsh environments: Features heat-shedding coatings, external rectifier location and dual cooling fans to handle demanding duty.
- Versatile mounting compatibility: Includes options for single-foot, J180 saddle, common-rail, and clutch-pulley installations across multiple platforms.
- Optimised for lithium-battery systems: Designed to work seamlessly with smart regulators for LiFePO₄ and other advanced battery chemistries.
- Generator replacement capability: Enables engine-based high-power charging to minimise or eliminate generator usage.
- Manufactured in the USA: Built to industrial standards including SAE J1171 certification and designed for marine/industrial duty.
Installing this alternator ensures your battery bank gets top-tier charging performance under real-world conditions without the need for constant generator backup.
| Technical Specifications | |
|---|---|
| Voltage | 24 V |
| Cut-In Alternator RPM | 1 072 rpm (alternator) approx |
| Maximum Alternator RPM | 19 000 rpm |
| Stator Size | 138 mm |
| Rotor Poles | 16 |
| Max Output (Cold, 9 000 rpm) | 144 A (~3 960 W) |
| Sustained Idle Output (Hot, 3 000 rpm) | 108 A (~2 970 W) |
| Sustained Cruising Output (Hot, 6 000 rpm) | 130 A (~3 575 W) |
| Regulation Type | External regulator required |
| Mounting Options | Single-foot, J180 saddle, common-rail, clutch pulley |
| Finish | E-coat/Cerakote with dual cooling fans |
| Certification | SAE J1171 certified |
| SKU | ARC.4403 |
| Model # | 4403 |
| UPC/EAN | 634707386244 |
| Brand | Arco Marine |
| Shipping Weight | 7.0000kg |
| Shipping Width | 0.172m |
| Shipping Height | 0.142m |
| Shipping Length | 0.215m |
| Shipping Cubic | 0.005251160m3 |
| Unit Of Measure | Each |
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