Allen-Bradley 845H-SJDZ13EBY2C Rotary Encoder

Allen-Bradley 845H-SJDZ13EBY2C is a 5 VDC optical incremental rotary encoder (Size 25) from Rockwell Automation's 845H family. It provides 180 pulses per revolution (PPR) and a 210 kHz frequency response, enabling high-speed position and speed feedback in automation systems. The rugged enclosure is designed for harsh industrial environments and carries NEMA Type 4 and Type 13 protection, with related documentation noting IP66 sealing for the series. The Mfr part number 845H-SJDZ13EBY2C appears in distributor catalogs and is listed as discontinued by several suppliers, so verify current availability before planning a retrofit. Typical uses include feedback for servo drives and other motion-control applications where compact encoders are required.