User Manual

Bosch AL9962SB/AL9963SB School Bus Alternators
Bosch School Bus Alternators are revolutionizing the
School Bus industry with high efficiency alternator
technology that has delivered maximum charging
power through millions of tough stop-and-go miles
worldwide. With 200 Amps on-the-road output and
120 Amps at idle (Figure 1), these alternators stand up
under all operating conditions. Plus, they’re
engineered with several innovative features to prevent
heat damage and component wear.
Advanced Performance Technology
The Bosch AL9962SB and AL9963SB represent the
most advanced school bus charging technology,
delivering extreme power and efficiency. The higher
charge rate at idle helps maximize battery life by
reducing battery deep cycling.
Competitor Bosch School Bus
145 Amps 200 Amps
62 Amps at idle 120 Amps at idle
55% efficiency 71% efficiency
High Temperature Resistance
Bosch School Bus Alternators can really take the heat!
At an operating temperature of 80°C (176°F), the
Bosch AL9962SB and AL9963SB sustain operating
amperage better than competitive units to supply
more power for critical electrical systems. They’re
specifically designed to withstand operating
temperatures up to 13% higher than competitive units.
Self Protection Regulator
Bosch Regulators equipped with exclusive Bosch
self-protection technology automatically begin to
reduce amperage output when underhood
temperatures exceed 125°C, allowing output to return
to normal levels when the temperature drops below
125°C. Competitive units typically fail at temperatures
AL9963SB - J180 mount
Dual Internal
Cooling Fans
Heavy Duty Slip
Ring Design
Self
Protection,
External
Heat
Dissipating
Regulator
Advanced
Temperature
Resistant
Electronics
External
Heat Dissipating
Rectifier
Patented Bosch
High-Efficiency
Winding
Technology
Exclusive
Bosch
Long-Life
Bearings
Self
Protection,
External
Heat
Dissipating
Regulator
Advanced
Temperature
Resistant
Electronics