The 1336-PB-SP20F PCB from Allen-Bradley is a precharge PCB for the 1336 FORCE, 1336 IMPACT, and 1336 PLUS II series AC drives. It is available as a spare part kit from Allen-Bradley. The 1336-PB-SP20F PCB is compatible with drives rated for 575 Volts AC input and that have output ratings ranging from 75 to 600 Horsepower. The 1336-PB-SP20F PCB is specifically compatible with Frame D drives with 75 Horsepower, 100 Horsepower, and 125 Horsepower ratings, Frame E drives with 150 Horsepower, 200 Horsepower, and 250 Horsepower ratings, Frame F drives with 350 Horsepower and 400 Horsepower ratings, and Frame G drives with 300 Horsepower, 350 Horsepower, 400 Horsepower, 450 Horsepower, 500 Horsepower, 600 Horsepower, and 650 Horsepower ratings.

Precharge PCBs like the 1336-PB-SP20F PCB are used to limit the inrush current during drive startup. If the inrush current is not limited, then considerable damage can be caused to system components. Precharging is used to enhance the operational lifespan of electronic components and improve their reliability. The Allen-Bradley 1336 IMPACT series includes 0.5 to 800 Horsepower rated drives. the Allen-Bradley 1336 PLUS II series includes 0.5 to 600 Horsepower rated drives. and the Allen-Bradley 1336 FORCE series includes 1 to 650 Horsepower rated drives. These Allen-Bradley drives are solid-state drives which are microprocessor controlled and that support variable output frequencies. ESD is a major source of failures and malfunctions in solid-state devices like these drives. Therefore Allen-Bradley recommends taking several ESD precautions to protect drive components against damage. These include the use of static-free workplaces, the use of grounded wrist straps, and the use of static shielded containers.