Allen-Bradley 193-BSB 12 USNT Industrial Relay

The Allen-Bradley 193-BSB 12 USNT Industrial Relay is an overload relay from Allen-Bradley’s 193-BSB family, designed to install with compatible contactors to protect motors in industrial control circuits. As a motor-protection device, it monitors load conditions and trips the circuit when overload conditions occur to prevent damage to machinery. The 193-BSB family includes several variants, with the 12 suffix indicating a specific model within the lineup. This relay is intended for modular integration within standard industrial panels and interfaces with Allen-Bradley contactors to provide coordinated protection. Common applications include protecting induction motors in conveyors, pumps, fans, and other automated machinery in manufacturing environments. For exact electrical ratings, coil voltages, mounting method, terminal arrangement, and tripping characteristics for the 193-BSB 12 USNT, refer to the official Rockwell Automation data sheet or current distributor specification pages.