Alternator Options

We offer a selection of different options to suit most requirements for either heat exchanger cooling or keel cooling. If you require an alternative solution with specific alternators we can normally design, manufacture and fit suitable alternator supports and pulley drives to suit your needs.

alternator options

Standard Set Up (Shown with Optional 3.5 kVA Travel Power)

alternator options

Optional Set Up

Seagoing Engines: Alternator Options

Engine Beta 10 Beta 14 Beta 16 Beta 20 Beta 25 Beta 30 Beta 35 Beta 38
Cylinders 2 2 2 3 3 3 4 4
BHP 10 13.5 16 20 25 30 35 38
RPM 3600 3600 3600 3600 3600 3600 2800 3600
Capacity (cc) 479 479 599 719 898 1123 1498 1498
Torque (Nm) - 29.7 37.8 45.8 56.1 65.2 93.9 87.0
                 
Standard
40 Amp Alt.
- Standard Standard Standard Standard - - -
Standard
65 Amp Alt.
- - - - - Standard Standard Standard
Polyvee Drive Fitting to
Standard Alt.
- Standard Standard Standard Standard Extra Extra Extra
Larger Alt.
Option
- 70 Amp 70 Amp 70 Amp 70 Amp 100 Amp 100 Amp 100 Amp
Insulated Elec. Starting - - - - - 70 Amp 70 Amp 70 Amp
2nd 12V Alt. - - - - - 100 Amp 100 Amp 100 Amp
12V 125A
Split Charge
- Extra Extra Extra Extra Extra Extra Extra
24V Elec. Starting - - - - - - - -
2nd 24V Alt. 
80 Amp
- - - - - - - -
2nd 24V Alt. 
60 Amp
- - - - - - - -
Travel Power - - - - - - 3.5 kVA 3.5 kVA
                 
Engine Beta 43 Beta 50 Beta 60 Beta 75 Beta 90 Beta 105 Beta 150  
Cylinders 4 4 4 4 4 4T 6  
BHP 43 50 56 75 90 99 147  
RPM 2800 2800 2700 2600 2600 2600 2800  
Capacity (cc) 1999 2197 2434 3620 3769 3769 6700  
Torque (Nm) 130.3 143.2 158.6 221.0 270.8 325.0 -  
                 
Standard
40 Amp Alt.
- - - - - - -  
Standard
65 Amp Alt.
Standard Standard Standard Standard Standard Standard -  
Polyvee Drive Fitting to
Standard Alt.
Extra Extra Extra Extra Extra Extra -  
Larger Alt.
Option
175 Amp 175 Amp 175 Amp 175 Amp 175 Amp 175 Amp -  
Insulated Elec. Starting 70/100 Amp 70/100 Amp 70/100 Amp 70/100 Amp 70/100 Amp 70 Amp -  
2nd 12V Alt. 175 Amp 175 Amp 175 Amp 175 Amp 175 Amp 175 Amp -  
12V 125A
Split Charge
Extra Extra Extra Extra Extra Extra -  
24V Elec. Starting Extra Extra Extra Extra Extra Extra -  
2nd 24V Alt. 
80 Amp
Extra Extra Extra Extra Extra Extra -  
2nd 24V Alt. 
60 Amp
Extra Extra Extra Extra Extra Extra -  
Travel Power 3.5/50 kVA 3.5/50 kVA 3.5/50 kVA 3.5/50 kVA 3.5/50 kVA 3.5/50 kVA -  

Alternators Information Downloads

Beta Marine Alternator Information Sheet - Alternator Information Sheet.