| Mfr. Part No. | Description |
| 4BU433 | Rated power Pn, kVA, 18 |
| 4BU434 | Rated power Pn, kVA, 20 |
| 4BU435 | Rated power Pn, kVA, 22.5 |
| 4BU453 | Rated power Pn, kVA, 25 |
| 4BU454 | Rated power Pn, kVA, 28 |
| 4BU473 | Rated power Pn, kVA, 31.5 |
| 4BU474 | Rated power Pn, kVA, 35.5 |
| 4BU475 | Rated power Pn, kVA, 40 |
| 4BU523 | Rated power Pn, kVA, 45 |
| 4BU533 | Rated power Pn, kVA, 50 |
| 4BU534 | Rated power Pn, kVA, 56 |
| 4BU543 | Rated power Pn, kVA, 63 |
| 4BU544 | Rated power Pn, kVA, 71 |
| 4BU553 | Rated power Pn, kVA, 80 |
| 4BU563 | Rated power Pn, kVA, 91 |
| 4BU564 | Rated power Pn, kVA, 100 |
| 4BU583 | Rated power Pn, kVA, 112 |
| 4BU584 | Rated power Pn, kVA, 125 |
| 4BU585 | Rated power Pn, kVA, 140 |
| 4BU593 | Rated power Pn, kVA, 160 |