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Do Eaton NEMA Contactors work at 25Hz Frequency

Yes, the lower frequency of 25 Hz should not be an issue for the main contacts of the contactor.

The UL-508 allows the frequency to be between 25 – 60 hz for the electrical tests.

However regarding the lower frequency for the coils : As the frequency reduces the coil temperature increases.

Therefore, 25 hz is not allowed for the coil of the contactor, Our coils are only rated for the 50/60hz range.