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For detailed specifications, scale drawings, 3D files, certificates, and manuals see
mastervolt.com.
12/90 MB
12/130 MB*
24/75 MB*
24/110 MB
24/150 MB
Item #
48512090
48512130
48524075
48524110
48524150
Charge regulation
the Alpha Pro MB regulator comes standard with all models
Charge current
90A
130A
75A
110A
150A
Charge voltage absorption
14.25V
14.25V
28.5V
28.5V
28.5V
Charge voltage float
13.25V
13.25V
26.5V
26.5V
26.5V
Cable length regulator/alternator
1.5 meter / 4.9 ft, oil resistant marine connection cable — delivered as standard
Pulley (double) diameter
73 mm
88 mm
88 mm
88 mm
92 mm
Belt section
2xA
2xA
2xA
2xA
2xA
Isolated from mass
yes
yes
yes
yes
yes
Directions of revolutions
2
2
2
2
2
Weight
12.1 lbs
5.5 kg
22.3 lbs
10.1 kg
22.3 lbs
10.1 kg
22.3 lbs
10.1 kg
28.9 lbs
13.1 kg
Dimensions
go to mastervolt.com for the drawings
Mounting
five to six,
six o’clock & five
past six
six o’clock
six o’clock
six o’clock
five to six,
six o’clock & five
past six
Charge regulation
the Alpha Pro regulator is standard with all models, see table above
* Available with multi groove pulley (12/130 model =
48512131
, 24/75 model =
48524076
).
Alpha Alternator Specifications
Link to MasterShunt
yes
Connection to Mastervolt alternator
yes
Connection to Bosch alternator
yes
Cooling
fanless
Nominal output voltage
12 V / 24 V
Cable length regulator/alternator
5' (1.5 m) oil resistant connection cable
Cable length temperature sensor
20' (6 m)
Connection plug regulator/alternator Alpha/Mastervolt
Display/read-out
LED display
Dimensions, hxwxd
3.5"x4.3"x1.2" (90x109x30 mm)
Weight
0.88 lbs (0.4 kg)
Approvals
CE
Charge characteristic
IUoUo, automatic / 3-step+ for gel/
AGM/ wet/Lithium Ion
Charge voltage bulk
14.25 V / 28.5 V
Charge voltage absorption
14.25 V / 28.5 V
Absorbtion time
4 hours, adjustable from 2 minutes
to 12 hours
Charge voltage float
13.25 V / 26.5 V
Temperature compensation
-22 mV / °F (-30 mV / °C)
Voltage compensation
voltage drop compensation in DC
cables up to 3 V
Alternator type
various
MasterBus powering
yes
Alpha Pro MB Charge Regulator
45512000
Connection cable delivered
as standard
Plus connection cable for
Bosch alternator
Generate:
Charge Regulators & Alternators