L. 240 Volts Primary, Single 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
• Aluminum or 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
240V Primary, Copper Wound, 1 Phase Autotransformers
| kVA | Select Secondary Voltage Below | |||||||
| 480V | 460V | 440V | 416V | 400V | 380V | 347V | 277V | |
| 3 | T51460 | T51470 | T51480 | T51490 | T51500 | T51510 | T51520 | T51530 |
| 5 | T51461 | T51471 | T51481 | T51491 | T51501 | T51511 | T51521 | T51531 |
| 7 | T51462 | T51472 | T51482 | T51492 | T51502 | T51512 | T51522 | T51532 |
| 10 | T51463 | T51473 | T51483 | T51493 | T51503 | T51513 | T51523 | T51533 |
| 15 | T51464 | T51474 | T51484 | T51494 | T51504 | T51514 | T51524 | T51534 |
| 25 | T51465 | T51475 | T51485 | T51495 | T51505 | T51515 | T51525 | T51535 |
| 37 | T51466 | T51476 | T51486 | T51496 | T51506 | T51516 | T51526 | T51536 |
| 50 | T51467 | T51477 | T51487 | T51497 | T51507 | T51517 | T51527 | T51537 |
| 75 | T51468 | T51478 | T51488 | T51498 | T51508 | T51518 | T51528 | T51538 |
| 100 | T51469 | T51479 | T51489 | T51499 | T51509 | T51519 | T51529 | T51539 |
| kVA | Select Secondary Voltage Below | ||||||
| 240V | 230V | 220V | 208V | 200V | 190V | 120V | |
| 3 | T51540 | T51550 | T51560 | T51570 | T51580 | T51590 | T51600 |
| 5 | T51541 | T51551 | T51561 | T51571 | T51581 | T51591 | T51601 |
| 7 | T51542 | T51552 | T51562 | T51572 | T51582 | T51592 | T51602 |
| 10 | T51543 | T51553 | T51563 | T51573 | T51583 | T51593 | T51603 |
| 15 | T51544 | T51554 | T51564 | T51574 | T51584 | T51594 | T51604 |
| 25 | T51545 | T51555 | T51565 | T51575 | T51585 | T51595 | T51605 |
| 37 | T51546 | T51556 | T51566 | T51576 | T51586 | T51596 | T51606 |
| 50 | T51547 | T51557 | T51567 | T51577 | T51587 | T51597 | T51607 |
| 75 | T51548 | T51558 | T51568 | T51578 | T51588 | T51598 | T51608 |
| 100 | T51549 | T51559 | T51569 | T51579 | T51589 | T51599 | T51609 |
Output Amps
| kVA | Output Amps at: | ||||||||||||||
| 480V | 460V | 440V | 416V | 400V | 380V | 347V | 277V | 240V | 230V | 220V | 208V | 200V | 190V | 120V | |
| 3 | 6.3 | 6.52 | 6.8 | 7.2 | 7.5 | 7.9 | 8.7 | 10.8 | 12.5 | 13 | 13.6 | 14.4 | 15 | 15.8 | 25 |
| 5 | 10.4 | 10.9 | 11.4 | 12 | 12.5 | 13.2 | 14.4 | 18.1 | 20.8 | 21.7 | 22.7 | 24 | 25 | 26.3 | 41.7 |
| 7 | 14.6 | 15.2 | 15.9 | 16.8 | 17.5 | 18.4 | 20.2 | 25.3 | 29.2 | 30.4 | 31.8 | 33.7 | 35 | 36.8 | 58.3 |
| 10 | 20.8 | 21.74 | 22.7 | 24 | 25 | 26.3 | 28.8 | 36.1 | 41.7 | 43.5 | 45.5 | 48.1 | 50 | 52.6 | 83.3 |
| 15 | 31.3 | 32.61 | 34.1 | 36.1 | 37.5 | 39.5 | 43.2 | 54.2 | 62.5 | 65.2 | 68.2 | 72.1 | 75 | 79 | 125 |
| 25 | 52.1 | 54.35 | 56.8 | 60.1 | 62.5 | 65.8 | 72.1 | 90.3 | 104.2 | 108.7 | 113.6 | 120.2 | 125 | 131.6 | 208.3 |
| 37 | 77.1 | 80.43 | 84.1 | 88.9 | 92.5 | 97.4 | 106.6 | 133.6 | 154.2 | 160.9 | 168.2 | 177.9 | 185 | 194.7 | 308.3 |
| 50 | 104.2 | 108.7 | 113.64 | 120.2 | 125 | 131.6 | 144.1 | 180.5 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | 416.7 |
| 75 | 156.3 | 163 | 170.45 | 180.3 | 187.5 | 197.4 | 216.1 | 270.76 | 312.5 | 326.1 | 340.9 | 360.6 | 375 | 394.7 | 625 |
| 100 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | 288.2 | 361.01 | 416.7 | 434.8 | 454.6 | 480.8 | 500 | 526.3 | 833.3 |