Allen-Bradley 20G21ND052JA0NNNNN 755 AC Drive, Standard, Open Type, Frame 2 7, AC Input with Precharge, Inclu, 480 VAC, 3 PH, 52 Amps, 40HP ND, 30HP HD, CM Jumper Installe d, DB Transistor, Blank (No HIM), Carton & Documents, Frame 4