F. 440 Volts Primary, Three Phase Autotransformers
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TEMCo Single Phase Autotransformers are 50/60 Hz rated and come in a NEMA 3R enclosure for indoor use as well as outdoor protection against rain and sleet. Our transformers are built to last, guaranteed. That's why we back these with a decade long warranty.
• UL Listed, CSA Approved
• Copper windings
• 50/60 Hz rated
• NEMA 3R Enclosure (for indoor or outdoor use)
Looking for a different specification? Click here to see all the primary voltage configurations, or see our full selection of autotransformers here.
Product Selection
Copper Wound Autotransformers, 440V Primary
| Select Secondary Voltage Below | ||||||||||||
| kVA | 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | 240V | 230V | 220V |
| 15 | T55470 | T55480 | T55490 | T55500 | T55510 | T55520 | T55530 | T55540 | T55550 | T55560 | T55570 | T55580 |
| 30 | T55471 | T55481 | T55491 | T55501 | T55511 | T55521 | T55531 | T55541 | T55551 | T55561 | T55571 | T55581 |
| 45 | T55472 | T55482 | T55492 | T55502 | T55512 | T55522 | T55532 | T55542 | T55552 | T55562 | T55572 | T55582 |
| 75 | T55473 | T55483 | T55493 | T55503 | T55513 | T55523 | T55533 | T55543 | T55553 | T55563 | T55573 | T55583 |
| 112.5 | T55474 | T55484 | T55494 | T55504 | T55514 | T55524 | T55534 | T55544 | T55554 | T55564 | T55574 | T55584 |
| 225 | T55475 | T55485 | T55495 | T55505 | T55515 | T55525 | T55535 | T55545 | T55555 | T55565 | T55575 | T55585 |
| 300 | T55476 | T55486 | T55496 | T55506 | T55516 | T55526 | T55536 | T55546 | T55556 | T55566 | T55576 | T55586 |
| 450 | T55477 | T55487 | T55497 | T55507 | T55517 | T55527 | T55537 | T55547 | T55557 | T55567 | T55577 | T55587 |
| 500 | T55478 | T55488 | T55498 | T55508 | T55518 | T55528 | T55538 | T55548 | T55558 | T55568 | T55578 | T55588 |
| 750 | T55479 | T55489 | T55499 | T55509 | T55519 | T55529 | T55539 | T55549 | T55559 | T55569 | T55579 | T55589 |
Output Amps
| kVA | Output Amps at: | |||||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | 240V | 230V | 220V | |
| 15 | 14.4 | 15.1 | 15.8 | 18 | 18.8 | 19.7 | 20.8 | 21.7 | 22.8 | 36.1 | 37.7 | 39.4 |
| 30 | 28.9 | 30.1 | 31.5 | 36.1 | 37.7 | 39.4 | 41.6 | 43.3 | 45.6 | 72.2 | 75.3 | 78.7 |
| 45 | 43.3 | 45.2 | 47.2 | 54.1 | 56.5 | 59.1 | 62.5 | 64 | 68.4 | 108.3 | 112 | 118.1 |
| 75 | 72.2 | 75.3 | 78.7 | 90.2 | 94.1 | 98.4 | 104.1 | 108.3 | 113 | 180.4 | 188.3 | 196.8 |
| 112.5 | 108.3 | 112 | 118.1 | 135.3 | 141.2 | 147.6 | 156.1 | 162.4 | 170.9 | 270.6 | 282.4 | 295.2 |
| 225 | 216.5 | 225.9 | 236.2 | 270.6 | 282.4 | 295.2 | 312.3 | 324.8 | 341.9 | 541.2 | 564.8 | 590.5 |
| 300 | 288.7 | 301.2 | 314.9 | 360.9 | 376.5 | 393.7 | 416.4 | 433 | 455.8 | 721.7 | 753.1 | 787.3 |
| 450 | 433 | 451.9 | 472.4 | 541.3 | 564.8 | 590.5 | 624.6 | 649.5 | 683.7 | 1082 | 1129 | 1180 |
| 500 | 481.1 | 502.1 | 524.9 | 601.4 | 627.6 | 656.1 | 693 | 721.7 | 759.7 | 1202 | 1255 | 1312 |
| 750 | 721.7 | 753.1 | 787.3 | 902.1 | 941.4 | 984.2 | 1040.9 | 1082.6 | 1139 | 1804 | 1882 | 1968 |