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The Mastervolt Alpha 24/150 (48624150) is a high-output 24V alternator delivering up to 150A charging current, ideal for powering multiple battery banks and onboard systems in marine and off-grid installations. Equipped with isolated ground and included Alpha Pro III charge regulator, this unit enables rapid, efficient charging even at low engine RPM. The alternator features a large 89 mm pulley, 2×A belt configuration, and multiple mounting options. Weight: 13.1 kg.
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Mastervolt 48624150 - Alpha Alternator 24/150, incl. Alpha Pro III Charge Regulator
The Mastervolt Alpha 24/150 is a powerful 24V alternator engineered for professional marine, mobile, and industrial power systems. With a maximum charging current of 150 A, it ensures reliable and complete charging of both starter and service battery banks. The included Alpha Pro III regulator provides adaptive 3-stage charging for optimal performance and battery lifespan.
Thanks to forced cooling and intelligent regulation, the Alpha 24/150 delivers high output even at idle engine speed and in elevated engine-room temperatures. Its isolated design allows safe integration in complex DC systems, and optional Battery Mate or battery isolators enable charging of up to three independent battery banks simultaneously.
Key Features:
- Delivers up to 150 A at 24 V
- Includes Alpha Pro III charge regulator (3-stage, temperature-compensated)
- Efficient performance even at low RPM
- Supports multi-bank charging with Battery Mate or isolators
- Electrically isolated negative pole
- Pulley-mounted fan ensures forced air cooling
- Designed to perform above 40 °C in engine compartments
- Suitable for all engine types (custom bracket options available)
General Specifications:
Part Number 48624150 Voltage 24 V Total Charging Current 150 A Charge Regulation Alpha Pro III (included) Isolated Operation Yes Rotational Direction Bi-directional (2 directions) Mounting Options Five to six, six o’clock, five past six Belt Section 2 × A Weight 13.1 kg (28.9 lbs)
Electrical Characteristics:
Charge Voltage – Absorption 28.5 V Charge Voltage – Float 26.5 V Nominal Pulley Diameter 89 mm (3.5 in)
Installation Notes:
- Custom brackets may be required depending on engine model
- Dimensions available in product technical drawings
- For use in professional marine, vehicle, and industrial setups
- Can serve as generator alternative with large battery/inverter system
Documents
Alpha 24_150 III - DataSheet Size: 230,4 KbAlpha 24_150 III - User Manual Size: 1021,5 Kb -
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