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

SMPS (Switch Mode) 30 amperes and 1-30 volts adjustable with two LED digital measuring instruments for output voltage and output current • quality power supply in the latest Switching power technology, ideal for the use of radio communication...

The Maas Power Supply Unit is ideal for the power supply of radio equipment (high RFI stability) or any other small electronics run off a 12v system. With constant and reliable supply you can even supply 12v batteries. Suitable for: testing multiple...

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...

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 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/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/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 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...

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 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...

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 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...

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...

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...

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. This combination is suitable for all...

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...

Mastervolt Alpha Compact B+ Adapter for M10 cable eye.

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

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

Multigroove pulley with 8 ribs. Specifications Diameter: 50 mm Width: 49.3 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 8 ribs. Specifications Diameter: 56 mm Width: 38.9 mm

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

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

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

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...

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...

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...

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...

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 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...

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