Advanced Products

Model: Power 450

Power 450 Brushless Alternator

The Power 450 is an air cooled, 28V high performance brushless alternator that provides 290A at engine idle. A perfect 50 DN drop-in replacement, EMP's Power 450 is a 450A, high efficiency alternator. The Power 450 offers a two year warranty for aftermarket and OEM applications.

Side View
Power 450 Chart
Power Curves

Features & Benefits

28V, 450A Brushless Alternator

The Power 450 is a 28V brushless alternator that produces 450A @ 6000 RPM, stabilized at 20C per SAE J56. The only moving parts inside this brushless alternator are the rotor and the rotor bearings. This simple design has proven to be very durable under the harshest conditions.


Type Specification Description
Rated Output @ 28 VDC (Stabilized @ 20C per SAE J56) 450 A @ 6000 RPM
Operational Speed Range 1800 to 6500 RPM
Intermittent Speed (for 30 seconds) 8000 RPM
Turn-on Speed 1250 RPM
Rotation CW or CCW
Ambient Temp Range -40° to 221°F
Intake Air Temp Range (at alternator inlet) -40° to 122°F
Storage Temp Range -40° to 257°F
Max. Intake Air Restriction @ 4000 RPM 1.0 in. H2O
Weight 97 lbs
Dimension 10.24" dia. x 15.6" long
Mounting Pad, Radius
Polarity Isolated Ground
Field Current 6.7A @28V
Inertia (rotating elements, excluding pulley) 158 lbs-in2


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The following kit options are available for this product. Any combination of options below can be choosen to configure the kit to your needs.

Voltage Optional Feature
28V Electrical Noise Suppression
Accessory Kits
Air Inlet Kits Installation Hardware Kits Oil Block Off Kits (50DN) Voltage Regulator Kits
Caterpillar C9 - 8 Groove Cummins ISL - 8 Groove Cummins ISM - 10 Groove DDC 50/60 - 10 Groove DDC 50/60 - 12 Groove


Transit Bus

Power450 Alternator Used in Transit Bus Application

Downloads & Documents

The following documents are available for this product. Please feel free to download to obtain additional product information.