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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...

This Mastervolt 24V/150A Alternator comes standard with the Alpha Pro III charge regulator for an optimal performance and longer-lasting batteries. Fast & complete charging of starter and service batteries Power supply for all consumers 24...

This Mastervolt 24V/110A Alternator comes standard with the Alpha Pro III 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...

The Mastervolt 24V/75A Alpha lll Multigroove Alternator comes standard with the Alpha Pro III charge regulator for an optimal performance and longer-lasting batteries. Using a Battery Mate or battery isolator in conjunction with an Alpha alternator...

The Mastervolt 24V/75A Alpha lll Alternator comes standard with the Alpha Pro III 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...

The Mastervolt 12V/130A Alpha lll Multigroove Alternator comes standard with the Alpha Pro III charge regulator for an optimal performance and longer-lasting batteries. Using a Battery Mate or battery isolator in conjunction with an Alpha...

The Mastervolt 12V/130A Alpha lll Alternator comes with the Alpha Pro III 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...

The Mastervolt 12V/90A Alpha lll Alternator comes with the Alpha Pro III 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...

The Mastervolt 24V/150A Alpha Alternator MB comes with the 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...

The Mastervolt 24V/110A Alpha Alternator MB comes with the 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...

The Mastervolt 24V/75A Alpha MB Multigroove Alternator comes with the 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...

The Mastervolt 24V/75A Alpha MB Alternator comes with the 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...

The Mastervolt 12V/130A Alpha MB Multigroove Alternator comes with the 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...

The Mastervolt 12V/90A Alpha MB Alternator comes with the 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...

The negative pole of Alpha Compact alternators connects to the housing. Isolated operation is possible by installation of isolating bushings.

Mastervolt Alpha Compact B+ Adapter for M10 cable eye.

The negative pole of Alpha Compact alternators connects to the housing. Isolated operation is possible by installation of isolating bushings.

Mastervolt Oil Pressure Switch Isolated M10x1.

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. This combination is suitable for all...

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. This combination is suitable for all...

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. The combination is suitable for all...

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. The combination is suitable for all...

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. This combination is suitable for all...

Alpha compact alternators are optimized to deliver continuous high power output in energy storage applications. Compared to conventional alternators, Alpha Compact offers lower weight, smaller dimensions and reduced fuel consumption. This version is...

Alpha Compact alternators are optimized to deliver continuous high power output in energy storage applications. Combined with our Alpha Pro regulators, they create a high performance, plug-and-play charging solution. The combination is suitable for all...

The Mastervolt Alpha 28/110A (No Pulley) Compact Alternator is optimized to deliver continuous high power output in energy storage applications. Compared to conventional alternators, Alpha Compact alternators  offer lower weight, smaller...

The Mastervolt Alpha Compact 28/80 Volvo Penta Alternator is optimized to deliver continuous high power output in energy storage applications.  This model excludes the Alpha Pro III charge regulator. These automotive style alternators...

The Mastervolt Alpha Compact 14/200A Alternator is optimized to deliver continuous high power output in energy storage applications. Compared to conventional alternators, Alpha Compact alternators offer lower weight, smaller dimensions and...

The Mastervolt Alpha Compact 14/120A (No Pulley) Alternator is optimized to deliver continuous high power output in energy storage applications. Compared to conventional alternators, Alpha Compact alternators offer lower weight, smaller dimensions...

Multigroove pulley with 2x 8 ribs. Specifications Diameter: 66.1 mm Width: 68.7 mm

Multigroove pulley with 8 ribs. Specifications Diameter: 48.1 mm Width: 39.4 mm

Multigroove pulley with 8 ribs. Specifications Diameter: 66.1 mm Width: 34.6 mm

Multigroove pulley with 8 ribs. Specifications Diameter: 50 mm Width: 49.3 mm

Multigroove pulley with 8 ribs. Specifications Diameter: 56 mm Width: 38.9 mm

Multigroove pulley with 6 ribs. Specifications Diameter: 55 mm Width: 36.1 mm

Multigroove pulley with 6 ribs. Specifications Diameter: 56.2 mm Width: 42.8 mm

Multigroove pulley with 6 ribs. Specifications Diameter: 49.8 mm Width: 40.3 mm

Multigroove pulley with 8 ribs. Specifications Diameter: 57.4 mm Width: 37.4 mm

Connection cable for any other brand of alternator that has a standard Bosch connector.

When using the Alpha Pro in combination with non-Mastervolt alternators, this alternator temperature sensor may offer additional protection against over heating.