close

close

Alpha 12/130 MB multigroove

Delivery includes Alpha Pro MB charge regulator.

  • Fast & complete charging of starter and service batteries.
  • Power supply for all consumers.
  • 12 V and 24 V versions.
  • 75 A to 150 A charge current.
  • Standard delivered with Alpha Pro MB charge regulator for an optimal performance and longer-lasting batteries.

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 engine types

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 at a 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 and 24/75 models are also available with a multigroove 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.

Product code: 48512131
download pdf

Specifications

General specifications
Charge regulation an Alpha Pro MB regulator comes standard with all models
Total charge current 130 A
Cable length regulator/alternator 1.5 metre, oil resistant connection cable - delivered as standard
Belt section 2xA
Isolated operation yes
Rotational direction 2
Mounting six o’clock
Dimensions see ‘downloads’ for drawings
Weight 10.1 kg
22.3 lb
 
Technical specifications
Charge voltage Absorption 14.25 V
Charge voltage Float 13.25 V
Pulley (double) diameter 88 mm
3.5 inch
 
 

Downloads

Datasheets

Alpha 12/130 MB multigroove

Charge characteristics for Mastervolt alternators models Alpha 12/90, 12/130, 24/75, 24/95C, 24/110...

Download

Drawings (dimensions)

Dimensions Mastervolt Alternator models 12/130, 24/75 and 24/110 (zipped DWG, PDF and EPS file)

Download

Drawings (installation)

Installation drawing Mastervolt Alternator models 12/130, 24/75 and 24/110 (zipped PDF and EPS file)

Download

Installation manuals

Alpha 12/130 MB multigroove

Appendix Alpha Pro Alternator (English)

Download

User manuals

Alpha 12/130 MB multigroove

User's manual Alpha Alternator and Alpha Pro regulator (English)

Download

Product notifications

Alpha 12/130 MB multigroove

Mastervolt alternators & brackets

Download

3D product drawings

Zipped STEP file Alpha Alternator 12-130 multigroove

Download

Zipped STEP file Alpha Alternator 12-130 multigroove

Download

Videos

Abby Ehler from Team Brunel shares her experience with the Mastervolt Power System in the Volvo Ocean Race, especially when it comes to ease of operation.

Neil Cox, Head of the Boatyard, gives you an extensive look inside the electrical system on every boat participating in the Volvo Ocean Race.

Simon Fisher, navigator of Vestas 11th Hour Racing, elaborates on the importance of the flawless integration of Mastervolt and B&G.

Watch the interviews and learn more about the excellent Mastervolt performance during the 2017/18 edition of the Volvo Ocean Race.

Liz Wardley, boat captain of Team Turn the Tide on Plastic, really likes the reliability of the Mastervolt Lithium Ion batteries onboard the VO65.