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The General Electric RT2J IE = 64–82 A is a thermal overload relay designed to protect three‑phase motors from overheating and electrical overload conditions. It monitors the current flowing to the motor and trips when the current exceeds the adjustable range of 64 to 82 amps, preventing damage from sustained overcurrent. The relay uses bimetallic elements that heat up with current flow and actuate an internal trip mechanism when the set threshold is reached. It is typically used with compatible contactors as part of a motor starter assembly in industrial control panels. The device includes a manual reset feature so that once a fault condition has cleared, the system must be reset before normal operation can resume.