Allen-Bradley 193-BSB16-A Thermal Overload Relay

Allen-Bradley 193-BSB16-A Thermal Overload Relay is a three-pole, bi-metallic protection device from the 193 family designed to shield small to mid-size motors from overheating in AC motor-control circuits. It provides thermal protection by sensing motor current and tripping the control circuit when the load exceeds its rated range, helping prevent insulation damage and equipment downtime. The model is rated for 1.0–1.6 A and supports operation up to 600 V AC, making it suitable for common industrial motors wired through standard control relays and contactors. As a compact, plug-in overload relay, it integrates with Allen-Bradley motor starters to deliver paired protection without additional sensing electronics. Typical applications include conveyors, pumps, fans, and other machinery where reliable motor protection is required in a panel-friendly form factor. The 193-BSB16-A designation identifies a specific variant within the 193-BSB16 line, providing a ready-to-order solution when a 1.0–1.6 A, three-pole thermal overload is needed for safeguarding motor circuits in automation installations.