The 163440, a 3-pole contactor by Allen-Bradley, is instrumental in the operation of 1395 DC drives, managing power ratings from 111 to 180 Amps. It excels in supporting DC drives ranging in horsepower from 40 to 100, operating seamlessly with AC inputs of 230 and 460 Volts, while accommodating a maximum of 550 Volts on the DC side. The contactor features a control coil powered by 115 Volts AC and can also be identified with part numbers SP-163440 or 1395-163440. It replaces the former 123184 spare part and offers options for auxiliary contacts to enhance versatility in various applications.