The 1333 AC drive series is a series of variable frequency drives designed by Allen-Bradley. The 1333 AC drives feature electrostatic discharge-sensitive parts and assemblies. Therefore, when installing or servicing either of these units, ensure that all static control procedures are adhered to. If the static control procedures are not followed, there is a chance of component damage. This occurs whenever static electricity generates electrostatic discharge which damages the CMOS devices on various boards attached to the 1333 AC drives. Therefore, make sure that the 1333 AC drives users are aware of and follow all the static control measures. The 1333 AC drives feature the standard and the derated input voltage options. With the standard input voltage as well as the derated input voltage, the unit comes with 230 or 208 Volts AC voltage. The 230 Volts AC input voltage results into 3.83 Volts per Hertz, modified by the auto torque boost circuit.

The Allen-Bradley 1333 AC drives are programmable, enabling the output Volts-per-Hertz to reach the nominal input voltage at 50, 60, 100, or 120 Hertz. The 1333 AC drives also come with a Bus voltage above 430 Volts DC. The Allen-Bradley 1333 variable frequency AC drives feature an operating temperature range between -10 and 50 degrees Celsius. To ensure optimal functionality, the 1333 AC drives should not be used outside of the manufacturer defined ambient environmental conditions and specifications. In addition, if the AC power line supply includes a correction capacitor, an isolation transformer can be used for reducing malfunctioning capacitors.