Bulletin 104 Reversing Contactors

The Allen-Bradley Bulletin 104 family consists of factory-assembled reversing contactor pairs built on the standard IEC 100-C platform, where the "104" prefix indicates that two mechanically and electrically interlocked contactors are pre-wired as a single reversing unit — eliminating field assembly of individual Bulletin 100 devices. Decoding a catalog number such as 104-C43D22: 104 = reversing pair, -C = standard IEC C-frame, 43 = 43 A AC-3 rating, D = 110 V/50 Hz (or 120 V/60 Hz) coil, 22 = 1 N.O. + 1 N.C. internal auxiliary. AC-3 current ratings span 9 A through 97 A across the family, with coil voltage options ranging from 24 V DC electronic (EJ) to 480 V/60 Hz (B) and load-side coil terminations available via the U prefix. Representative in-stock units include the 104-C09ED22 (9 A, 110 V DC electronic coil), the 104-C60L22 (60 A, 208–240 V AC), and the 104-C85D22 (85 A, 110/120 V AC). For full ratings, wiring diagrams, and dimensional data, consult the Allen-Bradley Bulletin 100/104 Contactor Technical Data (100-TD013).