Mastervolt Alpha 12/130 III Alternator & Charge Regulator Multi-Groove

Mastervolt Alpha 12/130 III Multigroove Alternator (48612131) with Regulator

Using a Battery Mate or battery isolator in conjunction with an Alpha alternator makes it possible to easily charge two or three separate battery sets simultaneously.

TIP: A second alternator on the main engine, combined with a larger battery bank and inverter, could be an alternative for a generator.

For all kinds of engines

Alpha alternators are equipped with several fixations for customised alternator brackets, available from your installer or engine supplier. Some engine brands come with Mastervolt alternator brackets as an option.

Fast charging, even with stationary rpm

Standard alternators only supply the specified capacity at a high rpm. The Mastervolt Alpha alternator is specifically designed for powerful charging, even with a low engine rpm.

Multigroove pulley

The 12/130 MG model features a multi-groove pulley.

Performs above 40°C

Forced cooling by fan operation of the pulley provides a lot of power in higher temperatures, especially close to the engine.

Alpha 12-130 MG III General Specifications:

Charge regulation: Alpha Pro III regulator (supplied)

Belt section: 2xA

Isolated operation: yes

Rotational direction: 2

Mounting: six o'clock

Dimensions: see ‘Downloads' for drawings

mv alpha 12.130 mg iii datasheet

mv alpha 12.130 mg iii dimensions

mv alpha 12.130 mg iii installation

mv alpha 12.130 mg iii user manual

o Fast & complete charging of starter and service batteries.
o Power supply for all consumers.
o 12V version.
o 130A charge current.
o Multi-groove pulley.
o Supplied with Alpha Pro III charge regulator for optimal performance & longer-lasting batteries.

o Supplied With: Alpha Pro III 3-Stage Charge Regulator
o Brand: Mastervolt
o Voltage Description: Charge Absorption: 14.25V, Charge Float: 13.25V
o Amps Description: Total charge current: 130A
o Approvals: CE
o Weight: 10.1 kg (22.3 lb)
o Diameter Description: Nominal pulley: 89mm (3.5")