ABB TF42-1.7 Thermal Overload Relay 1.3-1.7A

The ABB TF42-1.7 Thermal Overload Relay 1.3-1.7A protects electric motors by interrupting the control circuit when sustained overcurrent conditions are identified. Installed with the motor starter or contact assembly, thermal sensing elements respond to excessive current by activating internal contacts after a calculated time delay. The electrical communication coordinates with contactors, motor controls, and protection circuits to manage operating status throughout HVAC systems. Automatic overload detection interrupts motor operation before current exposure can affect connected equipment or associated electrical components.