Mastervolt Alpha Alternator 24/75 - 48224075

SKU: EX 48224075

1-2 weeks delivery time

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The Mastervolt Alpha 24/75 Alternator (48224075) delivers 75 A charging current at 24 V and is engineered for dependable operation in marine and mobile environments. With a dual A-section belt, 89 mm pulley, six o’clock mounting position, and fan-assisted cooling, it provides consistent output even in high-temperature conditions or at low engine RPM. The unit is galvanically isolated and supports bidirectional rotation. Weight: 10.1 kg. Alpha Pro III regulator included for optimal battery management.

Description
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Mastervolt 48224075 - Alpha Alternator 24/75 (75A, 24V, Dual A Belt, Isolated, With Alpha Pro III)

The Mastervolt Alpha Alternator 24/75 is purpose-built for fast, complete charging of both starter and service batteries in demanding marine and mobile setups. Offering 75 A of charging power at 24 V, this alternator maintains high efficiency even at idle RPM thanks to its advanced internal design and forced cooling system. It is an ideal choice for systems where reliability and performance under thermal stress are essential.

Key Features:

75 A charge current at 24 V for stable and efficient battery replenishment
Alpha Pro III charge regulator included for optimized charging cycles
Low-RPM charging performance for stop/start or idle engine conditions
Optional multigroove pulley version available
Galvanic isolation ensures system protection
Fan-assisted pulley cooling for operation in high-temperature environments
Mounting position: six o'clock
Compatible with battery isolators or Battery Mate for multi-bank charging

Applications:

Marine engine alternator upgrades
Mobile workshops or RV power systems
Commercial or industrial battery-based power supplies

Technical Specifications:

Charge Voltage (Absorption)	28.5 V
Charge Voltage (Float)	26.5 V
Total Charge Current	75 A
Voltage	24 V
Regulator	Alpha Pro III (included)
Rotational Direction	Bidirectional
Belt Section	2xA
Nominal Pulley Diameter	89 mm (3.5 in)
Mounting Position	Six o'clock
Weight	10.1 kg (22.3 lb)
Isolated Operation	Yes

Installation Notes:

The Alpha 24/75 is compatible with a wide range of engines and supports various bracket configurations. Custom mounting options are available via engine suppliers or certified Mastervolt partners. When used in conjunction with a Battery Mate or isolator, the alternator can charge multiple battery banks simultaneously — ideal for complex power setups. It can also serve as a viable alternative to a generator when paired with a large battery bank and inverter system.