The Allen Bradley 140U-K3D3-D30 is a molded case circuit breaker designed for reliable protection in electrical systems. Part of the 140U Series K-Frame, this 3-pole breaker offers a fixed thermal and adjustable magnetic trip unit, providing effective overload and short-circuit protection. It has a current rating of 300 amps and a breaking capacity ranging from 30 to 39 kiloamperes, making it suitable for a variety of industrial applications. Distributed by BSP Automation, this circuit breaker combines durability with precise performance to help maintain the safety and efficiency of your electrical installations.