Allen-Bradley 509-B0D Industrial Motor Starter

Allen-Bradley 509-B0D Industrial Motor Starter is a Series B, Size 1 motor starter designed for direct-on-line control, featuring a 120 VAC control coil and a 27 A load rating for mains up to 600 VAC. This compact starter from Allen-Bradley (Rockwell Automation) uses standard contactor-style switching to start and stop motors in industrial automation equipment such as pumps, fans, conveyors, and grinders. The 509-B0D model is a Size 1 unit in the Series B lineup, aligning with common control-panel architectures that require a reliable, space-efficient motor-control solution. In practice, it supports motors up to 600 VAC and is energized by a 120 VAC control circuit, making it compatible with many standard industrial control systems. With its compact Size 1 footprint in the Series B family, the 509-B0D fits smaller control panels or equipment enclosures while delivering the reliability and serviceability expected from Allen-Bradley components.