Allen-Bradley 509 / 500F NEMA Starters

Allen-Bradley 509 NEMA non-reversing starters and 500F open contactors are size-letter NEMA motor control devices used on industrial panels and machine tools. Catalog numbers such as 509-AOD through 509-EOD and matching 500F-xOD930 contactors encode NEMA size and coil options; overload heater elements (W-series) are selected separately to match motor FLA. Confirm NEMA size, coil voltage, and heater rating against the failed starter before ordering a replacement. East Coast Compactor stocks frequently requested 509 / 500F sizes and ships from Northwood NH. We sell as an independent supplier and do not claim authorized-distributor status or factory warranty.