Bulletin 512 Manual Starters

The Allen-Bradley Bulletin 512 is a family of combination manual motor starters featuring an integrated disconnect mechanism, available across NEMA sizes 2, 3, and 4 and a wide range of enclosure ratings including NEMA 1, 3R/4/1, 4/4X, and 3R/4. Designed for across-the-line motor starting applications, these units combine overload protection and disconnect functionality in a single assembly. Catalog numbers encode key configuration details: the letter(s) following the 512- prefix identify the starter size and enclosure type, the next character(s) represent the coil voltage and frequency (for example, B = 480V/60 Hz, F = 120V/60 Hz, A = 240V/60 Hz), and suffix codes designate auxiliary contact arrangements, pilot devices, and terminal options. Among the most active in-stock models are the 512-CAB-25R (Size 2, 480V/60 Hz, NEMA 1), the 512-DAB-3-26R (Size 3, 480V/60 Hz, NEMA 1), and the 512-EFB-A2M-6P-17-27R-414-TB6 (Size 4, 120V/60 Hz, NEMA 3R/4/1). For full ratings, wiring diagrams, and suffix definitions, consult the Bulletin 512 Technical Data Sheet (100-TD013).