ABB TF42-1.7 Thermal Overload Relay 1.3-1.7A

The ABB TF42-1.7 Thermal Overload Relay is a motor component to monitor electrical current and protect connected motors from overload conditions. It operates within an adjustable current range of 1.3 to 1.7 amps responding to sustained overcurrent by interrupting the control circuit. The relay is commonly used in HVAC systems and industrial motor control assemblies where electric motors drive fans, compressors, or pumps. As part of the motor starter assembly, it works in coordination with contactors and control wiring to support regulated motor operation within the equipment.