24V Adjustable External Voltage Regulator for Marine Alternator Charging Systems

Provides single-stage external voltage regulation for 24 V marine electrical systems using compatible positive-excitation P-Type alternators. The adjustable potentiometer allows the maximum charging voltage to be configured between 26.5 V and 29.5 V, with a factory setting of 27.5 V. Dedicated power, ignition, stator, field and ground connections integrate the regulator with the alternator and vessel electrical system, while onboard LED indicators provide visual confirmation of power, stator and field activity. The compact heat-sink housing includes mounting tabs and is designed for installation on a flat surface with sufficient airflow for cooling.

Key Features

• 24 V External Regulation: Designed for compatible 24 V positive-excitation P-Type externally regulated alternators.
• Adjustable Charging Voltage: Provides a maximum charging voltage adjustment range from 26.5 V to 29.5 V.
• 27.5 V Factory Setting: Supplied with the maximum charging voltage preset to 27.5 V.
• Single-Stage Voltage Control: Maintains the configured maximum charging voltage during alternator operation.
• Onboard Adjustment Potentiometer: Allows charging voltage to be increased clockwise or reduced counterclockwise.
• Power Status Indicator: Green LED confirms when regulator power is active.
• Stator Activity Indicator: Orange LED provides visual indication of alternator stator activity.
• Field Activity Indicator: Yellow LED indicates when alternator field output is active.
• Dedicated Alternator Connections: Provides separate power, ignition, stator, field and ground connections for system integration.
• Heat-Sink Construction: Incorporates mounting tabs and a heat-sink housing designed for installation with adequate cooling airflow.
• Fused Power Connection: Requires the regulator power circuit to be protected by a 10 A fuse.

Allowing charging voltage to be matched to compatible 24 V battery systems, the regulator provides straightforward control for externally regulated marine alternators. Its adjustable output and integrated status indicators simplify charging configuration and operational monitoring.