Equipment Failure Rates: Circuit_Breaker
Equipment failure rates, MTBF, MTTR, and downtime statistics for electrical and mechanical plant equipment. Primary data from the USACE PREP reliability database (IEEE Std 3006.8-2018 Table 2), covering ~280 equipment classes. Supplemental data from IEEE motor and transformer surveys.
| equipment type | class code | description | failure rate per year (failures/year) | failures (count) | mdt hours (h) | mtbf hours (h) | mttm hours (h) | mttr hours (h) | standard | survey | unit years (unit-years) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Circuit_Breaker | E12-111 | Circuit breaker, air, 3-phase, | 0.010128 | 90 | 60.16 | 864,889 | 73.27 | 11.65 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 8,885.8 |
| Circuit_Breaker | E12-112 | Circuit breaker, air, 3-phase, | 0.023708 | 3 | — | 369,496 | — | — | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 126.5 |
| Circuit_Breaker | E12-211 | Circuit breaker, fixed (includes | 0.000116 | 4 | 9.64 | 75,706,529 | 3.09 | 23.25 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 34,569.2 |
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