Selection code
| Model | Rated current | Number of poles | Rated voltage |
| UKF-2P20 | 20 | 2 | 280 |
| UKF-3P20 | 20 | 3 | 440 |
| UKF-4P20 | 20 | 4 | 440 |
| UKF-2P35 | 35 | 2 | 280 |
| UKF-3P35 | 35 | 3 | 440 |
| UKF-4P35 | 35 | 4 | 440 |
| UKF-2P63 | 63 | 2 | 280 |
| UKF-3P63 | 63 | 3 | 440 |
| UKF-4P63 | 63 | 4 | 440 |
Parameter
| Current(A) | 20 | 35 | 63 | |
| Poles (P) | 2.3.4 | 2.3.4 | 2.3.4 | |
| Dimension(mm) | a | 166 | 166 | 166 |
| b | 83 | 83 | 83 | |
| c | 86 | 86 | 86 | |
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