Allen-Bradley 1747-L511 SLC 500 I O Expansion Module

The Allen-Bradley 509-AOB Full Voltage Non-Reversing Starter provides direct-on-line starting with integrated overload protection for three‑phase motors in industrial motor control systems. Commonly installed in motor control centers, pump stations, conveyors, and manufacturing equipment, it is used to replace legacy motor starters and maintain reliable operation. This Bulletin 509 device supports across-the-line starting and overload protection via a compatible thermal overload relay; coil voltage and horsepower ratings are application dependent, and the unit is designed for panel-mount or motor control center installations in industrial environments. Condition: New surplus factory box (NSFB). Common replacements include Allen-Bradley 509-BOD, Schneider Electric LC1D32 starter, and Siemens 3RT2036, reflecting its role as a drop-in option in legacy control schemes. Manufacturer: Allen-Bradley (Rockwell Automation).