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Mastervolt
Alpha Pro III

Alpha Pro III

Product catalog summary

Overview
The Alpha Pro III is an advanced 3-step charge regulator designed for both standard and high-performance alternators, enhancing the charging efficiency of service batteries in boats and vehicles. It ensures fast and safe charging, protecting both the engine and batteries, and features a modernized design with improved power and usability.

Key Features

Transforms any alternator into a temperature-controlled 3-step charger.
Reduces engine run time, fuel consumption, noise, and emissions.
Prevents overcharging, extending battery life.
Balances engine load to reduce RPM variations.
Compatible with alternators ranging from 200 A to 400 A.
Includes a 'keep alive' feature for reliable tachometer readings.
Suitable for all battery types, including Lithium Ion, and for 12 V and 24 V systems.
MasterBus compatible for simplified wiring and optimal integration with Mastervolt products.

Applications
The Alpha Pro III can enhance the performance of standard alternators in vehicles or boats and can replace generators when used with high-performance alternators.

Specifications

Nominal output voltage: 12 V / 24 V
Connection compatibility: Mastervolt and Bosch alternators (with adapter cable)
Dimensions: 90 x 109 x 30 mm (3.5 x 4.3 x 1.2 inches)
Weight: 0.4 kg (0.9 lb)
Charge characteristic: IUoUo, automatic / 3-step+ for various battery types
Field currents: Up to 20 amps
Temperature compensation: -30 mV / °C (-17 mV/ °F)
Voltage compensation: Up to 3 V in DC cables

Technical Approvals
The product is CE approved and includes a battery temperature sensor with a 6-meter cable.

Catalog excerpts

Advanced 3-step charge regulator for standard and high performance alternators The propulsion engine of your boat or vehicles may be used to quickly charge your service batteries, either while cruising or taking a break. The advanced and powerful Alpha Pro III ensures fast and safe charging, protecting both the engine and the batteries. Building on 10 years of experience, the Alpha Pro III features a modernized look, higher power and improved ease of use. The Alpha Pro III measures the temperature and the voltage of your batteries to prevent overcharging, keeping them in perfect condition. It...

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General specifications Link to MasterShunt Connection to Mastervolt alternator Connection to Bosch alternator Nominal output voltage Cable length regulator/alternator Cable length temperature sensor Connection plug regulator/alternator Cooling MasterBus powering Display/read-out Dimensions, hxwxd Weight Delivered with Approvals Technical specifications Charge characteristic Charge voltage Bulk/Absorption/Float Absorption time Temperature compensation Voltage compensation Alternator type Field currents MasterBus compatible yes yes yes, using a Bosch adapter cable (product code 45510500) 12V/24V 1.5...

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