The 1336-PB-SP22B board is an Allen-Bradley precharge PC board with an input voltage rating of 575 Volts AC. The power rating of this PCB is from 75 to 800 Horsepower. It is designed to be used with adjustable frequency drives in the Allen-Bradley 1336 Force, 1336 Plus II, and 1336 IMPACT variable frequency drive series. The 1336 drive is used for speed control and torque regulation. The drive can control speed with more than a 150% overload capacity. The drive can be configured through programming to handle a wide variety of tasks. The 1336-PB-SP22B board is used to protect the internal components of the drive from high inrush currents. When the initial power is supplied to the drive, a high inrush current is generated which can damage the internal components of the board and the drive. The precharge PCB monitors and regulates the current which in turn protects the drive from electrical damages.

The 1336-PB-SP22B board is dependent on the power supply from the drive in order to operate. This PCB is compact in size and it is portable. It has an operating frequency between 50 and 60 Hertz. The module is equipped with LED indicators which indicate the functioning of the board and it has an "SCR ON" indicator light. The 1336-PB-SP22B board is certified with different standards including the UL, CE, RK1, and class CC standards. Proper earthing is necessary during the installation of the board and its host drive because electrostatic discharge may harm the internal components of both devices.