Allen-Bradley 193-T1BC30 Thermal Overload Relay

The Allen-Bradley 193-T1BC30 Thermal Overload Relay is a Type T1 MCS IEC‑compliant, bimetallic overload relay used to protect three‑phase motors by tripping when current exceeds its calibrated range. It provides a 24.5 to 30 A adjustable setting, enabling precise protection for motor loads in IEC motor starters, and, being ambient-temperature compensated, maintains consistent trip behavior from -20°C to +60°C. This design anchors motor protection in a rugged, mechanical device that reacts to motor current heating rather than requiring external sensing. As part of the 193‑T1 family, the 193-T1BC30 is intended for integration with standard motor starters in IEC control circuits to reliably interrupt the motor circuit on overload.