ABB 193-T1AC20 Overload Relay

ABB 193-T1AC20 is a bi-metallic overload relay in the 193-T1 family, designed for motor protection in IEC-based control circuits. It provides a 15.0–20.0 A full-load current range, making it suitable for motors protected by compatible ABB contactors in standard starters. This T1-series relay features ambient temperature compensation, keeping its trip characteristics stable from -20 °C to +60 °C and helping prevent nuisance trips or under-protection due to temperature shifts. As a dedicated thermal overload relay, the 193-T1AC20 senses sustained overcurrent through a bi-metallic element and opens the control circuit to protect the motor, typically used in conjunction with motor starters and protection schemes in conveyors, pumps, fans, and other machinery. The device is part of Rockwell Automation’s 193 line and is specified for IEC motor protection applications, delivering reliable, repeatable protection in demanding industrial environments.