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General-purpose Relay: Mean Time Between Failures

FAQ No. FAQ03424

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Question

Is there any data on the Mean Time Between Failures (MTBF) of relays?

Answer

There is no data for the Mean Time Between Failures (MTBF) for Relays.

This is because the mean failure rate greatly depends on the current flowing through the contacts, the load type, switching frequency, ambient temperature, and whether Relays are connected to an AC or DC load.

The failure rate P reference value and endurance curves can be used as indicators for the frequency of relay failures and service life.