How can you determine if an overload relay is functioning correctly?

Determining if an overload relay is functioning correctly primarily involves performing regular functional tests. This approach ensures that the relay operates as intended under various load conditions and can accurately sense and respond to overload situations. Regular testing allows for the verification of the relay's response to current levels that exceed its set threshold, thus confirming its operational reliability.

Functional tests typically simulate overload conditions to see if the relay correctly trips the circuit and shuts down the motor. This practical assessment provides concrete evidence of the relay’s performance, unlike visual inspections or checks related to size and ratings, which don’t offer a direct measure of operational capability. Additionally, while installation location may influence accessibility and cooling, it does not provide insight into the working state of the overload relay itself.