Circuit Breaker Ratings: xr mccb gt20k
14 to 23
Circuit breaker ratings and application data per IEEE C37.06-2009 (medium/high-voltage power CBs) and IEEE Std 3004.5-2025 (low-voltage LVPCB and MCCB). Covers MV/HV preferred ratings (interrupting, TRV, close-latch), LV frame and trip-device ratings, LVPCB short-circuit ratings with and without instantaneous trip, X/R multiplying factors for fault-current derating, altitude derating factors, and MCCB electrical endurance operation counts.
| voltage class | interrupting kA | breaker type | multiplying factor (dimensionless) | power factor pct (%) | standard | xr ratio (dimensionless) |
|---|---|---|---|---|---|---|
| xr mccb gt20k | 14 | MCCB gt20kA | 1.08 | 14 | IEEE Std 3004.5-2025 | 7.07 |
| xr mccb gt20k | 15 | MCCB gt20kA | 1.06 | 15 | IEEE Std 3004.5-2025 | 6.59 |
| xr mccb gt20k | 16 | MCCB gt20kA | 1.05 | 16 | IEEE Std 3004.5-2025 | 6.17 |
| xr mccb gt20k | 17 | MCCB gt20kA | 1.04 | 17 | IEEE Std 3004.5-2025 | 5.8 |
| xr mccb gt20k | 18 | MCCB gt20kA | 1.02 | 18 | IEEE Std 3004.5-2025 | 5.49 |
| xr mccb gt20k | 19 | MCCB gt20kA | 1.01 | 19 | IEEE Std 3004.5-2025 | 5.17 |
| xr mccb gt20k | 20 | MCCB gt20kA | 1 | 20 | IEEE Std 3004.5-2025 | 4.9 |
| xr mccb gt20k | 21 | MCCB gt20kA | 1 | 21 | IEEE Std 3004.5-2025 | 4.86 |
| xr mccb gt20k | 22 | MCCB gt20kA | 1 | 22 | IEEE Std 3004.5-2025 | 4.43 |
| xr mccb gt20k | 23 | MCCB gt20kA | 1 | 23 | IEEE Std 3004.5-2025 | 4.23 |
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