Allen-Bradley 336-WB0091 Dynamic Braking Chopper Module

The Allen-Bradley 1336-WB009 Dynamic Braking Chopper Module dissipates regenerative energy during motor deceleration for Bulletin 1336 series AC drives, helping regulate DC bus voltage and shorten stopping times when braking is required. Designed for use with 1336 PLUS, 1336 PLUS II, 1336 FORCE, and 1336 IMPACT drives, it accepts 380/415/460 VAC input and provides a 750 VDC bus rating while delivering up to 9 A of continuous current. The chopper uses IGBT technology and requires an external dynamic brake resistor; it features a minimum dynamic brake resistance of 37 Ω and communicates status via two red LEDs (DC Power and Brake On). The enclosure is IP00 open type with screw-type terminals and is rated for Industrial Automation environments, operating from -10°C to +40°C, and suited for applications such as conveyors, cranes, centrifuges, fans, and pumps within AC drive systems. Common replacements include 1336-WB110 and WB035 styles from Allen-Bradley, underscoring its role in maintaining controlled braking and DC bus protection across legacy and retrofit projects.