The Allen-Bradley 140U-J0D3-D22 is a 3-pole, J-frame inverse-time molded case circuit breaker (MCCB) from the 140U series, designed for industrial electrical protection applications. It has a continuous current rating of 220 Amps and an interrupting rating exceeding 100 kA. This circuit breaker is typically used for overcurrent protection in motor control power supply lines and is often integrated into tandem systems with disconnect switches and contactors for motor starter applications. The magnetic tripping point can be manually configured by the end user, providing flexible and reliable protection for industrial motors and associated control systems.