High-Capacity 24V Charging for Yanmar Common Rail Marine Engines

Built for demanding marine electrical systems, this 24V Low Turn-On (LTO) high-output alternator delivers up to 4kW of charging power while producing excellent output at low engine speeds. Featuring a 3.15" Common Rail saddle mount and isolated ground configuration, it is specifically configured for Yanmar Common Rail engines. The externally regulated design works with advanced charging systems, providing precise battery management for large AGM, GEL and lithium battery banks.

Key Features

• Low Turn-On Charging Performance – Begins generating charging current at lower alternator speeds than conventional alternators, improving battery recovery during idle and low-RPM operation.
• Up to 4kW Output – Produces up to 144A at 27.5V to support high-capacity battery banks and power-hungry onboard electrical equipment.
• 3.15" Common Rail Housing – Configured specifically for Yanmar Common Rail engines using the 3.15" saddle mounting arrangement.
• Isolated Ground Configuration – Electrically isolated ground supports installations requiring independent grounding and improved compatibility with marine electrical systems.
• Native 24V Field System – Incorporates a dedicated 24V rotor and field circuit to increase efficiency while reducing operating temperatures.
• External Regulation – Designed for use with an external voltage regulator, enabling accurate charging profiles for modern battery technologies.
• 49mm K6 Serpentine Pulley – Equipped with a 6-groove serpentine pulley for efficient belt drive and dependable power transmission.
• Advanced Thermal Management – Heat-dissipating coatings, dual cooling fans and an externally mounted rectifier help maintain consistent charging performance during continuous operation.
• Ignition Protected – SAE J1171 certified for installation in ignition-protected marine engine compartments.

Engineered for continuous-duty service, this alternator delivers dependable charging performance for vessels requiring efficient low-speed charging and sustained high-output operation.