B1. 100 Volt Primary Single Phase Isolation Transformers
TEMCo Single Phase Isolation Transformers 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? See all the primary voltage configurations here.
Select a Different Primary Configuration »
| Secondary Voltages Selection | |
| 1. 600 | 15. 277 |
| 2. 575 | 16. 240 |
| 3. 550 | 17. 120/240 |
| 4. 480 | 18. 230 |
| 5. 240/480 | 19. 115/230 |
| 6. 460 | 20. 220 |
| 7. 230/460 | 21. 110/220 |
| 8. 440 | 22. 208 |
| 9. 220/440 | 23. 200 |
| 10. 416 | 24. 190 |
| 11. 208/416 | 25. 120 |
| 12. 400 | 26. 115 |
| 13. 380 | 27. 110 |
| 14. 347 | 28. 100 |
1. 100V Primary - 600 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 5 | - | Contact |
| 5 | 8.33 | - | Contact |
| 7.5 | 12.5 | - | Contact |
| 10 | 16.67 | Contact | Contact |
| 15 | 25 | Contact | Contact |
| 25 | 41.67 | Contact | Contact |
| 37.5 | 62.5 | Contact | Contact |
| 50 | 83.33 | Contact | Contact |
| 75 | 125 | Contact | Contact |
| 100 | 166.67 | Contact | Contact |
| 167 | 278.33 | Contact | Contact |
| 200 | 333.33 | Contact | Contact |
| 250 | 416.67 | Contact | Contact |
| 330 | 550 | Contact | Contact |
2. 100V Primary - 575 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 5.22 | - | Contact |
| 5 | 8.70 | - | Contact |
| 7.5 | 13.04 | - | Contact |
| 10 | 17.39 | Contact | Contact |
| 15 | 26.09 | Contact | Contact |
| 25 | 43.48 | Contact | Contact |
| 37.5 | 65.22 | Contact | Contact |
| 50 | 86.96 | Contact | Contact |
| 75 | 130.43 | Contact | Contact |
| 100 | 173.91 | Contact | Contact |
| 167 | 290.43 | Contact | Contact |
| 200 | 347.83 | Contact | Contact |
| 250 | 434.78 | Contact | Contact |
| 330 | 573.91 | Contact | Contact |
3. 100V Primary - 550 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 5.45 | - | Contact |
| 5 | 9.09 | - | Contact |
| 7.5 | 13.64 | - | Contact |
| 10 | 18.18 | Contact | Contact |
| 15 | 27.27 | Contact | Contact |
| 25 | 45.45 | Contact | Contact |
| 37.5 | 68.18 | Contact | Contact |
| 50 | 90.91 | Contact | Contact |
| 75 | 136.36 | Contact | Contact |
| 100 | 181.82 | Contact | Contact |
| 167 | 303.64 | Contact | Contact |
| 200 | 363.64 | Contact | Contact |
| 250 | 454.55 | Contact | Contact |
| 330 | 600 | Contact | Contact |
4. 100V Primary - 480 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 6.25 | - | Contact |
| 5 | 10.42 | - | Contact |
| 7.5 | 15.63 | - | Contact |
| 10 | 20.83 | Contact | Contact |
| 15 | 31.25 | Contact | Contact |
| 25 | 52.08 | Contact | Contact |
| 37.5 | 78.13 | Contact | Contact |
| 50 | 104.17 | Contact | Contact |
| 75 | 156.25 | Contact | Contact |
| 100 | 208.33 | Contact | Contact |
| 167 | 347.92 | Contact | Contact |
| 200 | 416.67 | Contact | Contact |
| 250 | 520.83 | Contact | Contact |
| 330 | 687.50 | Contact | Contact |
5. 100V Primary - 240/480 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 12.5/6.25 | - | Contact |
| 5 | 20.83/10.42 | - | Contact |
| 7.5 | 31.25/15.63 | - | Contact |
| 10 | 41.67/20.83 | Contact | Contact |
| 15 | 62.5/31.25 | Contact | Contact |
| 25 | 104.17/52.08 | Contact | Contact |
| 37.5 | 156.25/78.13 | Contact | Contact |
| 50 | 208.33/104.17 | Contact | Contact |
| 75 | 312.5/156.25 | Contact | Contact |
| 100 | 416.67/208.33 | Contact | Contact |
| 167 | 695.83/347.92 | Contact | Contact |
| 200 | 833.33/416.67 | Contact | Contact |
| 250 | 1041.67/520.83 | Contact | Contact |
| 330 | 1375/687.5 | Contact | Contact |
6. 100V Primary - 460 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 6.52 | - | Contact |
| 5 | 10.87 | - | Contact |
| 7.5 | 16.30 | - | Contact |
| 10 | 21.74 | Contact | Contact |
| 15 | 32.61 | Contact | Contact |
| 25 | 54.35 | Contact | Contact |
| 37.5 | 81.52 | Contact | Contact |
| 50 | 108.70 | Contact | Contact |
| 75 | 163.04 | Contact | Contact |
| 100 | 217.39 | Contact | Contact |
| 167 | 363.04 | Contact | Contact |
| 200 | 434.78 | Contact | Contact |
| 250 | 543.48 | Contact | Contact |
| 330 | 717.39 | Contact | Contact |
7. 100V Primary - 230/460 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 13.04/6.52 | - | Contact |
| 5 | 21.74/10.87 | - | Contact |
| 7.5 | 32.61/16.3 | - | Contact |
| 10 | 43.48/21.74 | Contact | Contact |
| 15 | 65.22/32.61 | Contact | Contact |
| 25 | 108.7/54.35 | Contact | Contact |
| 37.5 | 163.04/81.52 | Contact | Contact |
| 50 | 217.39/108.7 | Contact | Contact |
| 75 | 326.09/163.04 | Contact | Contact |
| 100 | 434.78/217.39 | Contact | Contact |
| 167 | 726.09/363.04 | Contact | Contact |
| 200 | 869.57/434.78 | Contact | Contact |
| 250 | 1086.96/543.48 | Contact | Contact |
| 330 | 1434.78/717.39 | Contact | Contact |
8. 100V Primary - 440 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 6.82 | - | Contact |
| 5 | 11.36 | - | Contact |
| 7.5 | 17.05 | - | Contact |
| 10 | 22.73 | Contact | Contact |
| 15 | 34.09 | Contact | Contact |
| 25 | 56.82 | Contact | Contact |
| 37.5 | 85.23 | Contact | Contact |
| 50 | 113.64 | Contact | Contact |
| 75 | 170.45 | Contact | Contact |
| 100 | 227.27 | Contact | Contact |
| 167 | 379.55 | Contact | Contact |
| 200 | 454.55 | Contact | Contact |
| 250 | 568.18 | Contact | Contact |
| 330 | 750 | Contact | Contact |
9. 100V Primary - 220/440 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 13.64/6.82 | - | Contact |
| 5 | 22.73/11.36 | - | Contact |
| 7.5 | 34.09/17.05 | - | Contact |
| 10 | 45.45/22.73 | Contact | Contact |
| 15 | 68.18/34.09 | Contact | Contact |
| 25 | 113.64/56.82 | Contact | Contact |
| 37.5 | 170.45/85.23 | Contact | Contact |
| 50 | 227.27/113.64 | Contact | Contact |
| 75 | 340.91/170.45 | Contact | Contact |
| 100 | 454.55/227.27 | Contact | Contact |
| 167 | 759.09/379.55 | Contact | Contact |
| 200 | 909.09/454.55 | Contact | Contact |
| 250 | 1136.36/568.18 | Contact | Contact |
| 330 | 1500/750 | Contact | Contact |
10. 100V Primary - 416 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.21 | - | Contact |
| 5 | 12.02 | - | Contact |
| 7.5 | 18.03 | - | Contact |
| 10 | 24.04 | Contact | Contact |
| 15 | 36.06 | Contact | Contact |
| 25 | 60.10 | Contact | Contact |
| 37.5 | 90.14 | Contact | Contact |
| 50 | 120.19 | Contact | Contact |
| 75 | 180.29 | Contact | Contact |
| 100 | 240.38 | Contact | Contact |
| 167 | 401.44 | Contact | Contact |
| 200 | 480.77 | Contact | Contact |
| 250 | 600.96 | Contact | Contact |
| 330 | 793.27 | Contact | Contact |
11. 100V Primary - 208/416 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 14.42/7.21 | - | Contact |
| 5 | 24.04/12.02 | - | Contact |
| 7.5 | 36.06/18.03 | - | Contact |
| 10 | 48.08/24.04 | Contact | Contact |
| 15 | 72.12/36.06 | Contact | Contact |
| 25 | 120.19/60.1 | Contact | Contact |
| 37.5 | 180.29/90.14 | Contact | Contact |
| 50 | 240.38/120.19 | Contact | Contact |
| 75 | 360.58/180.29 | Contact | Contact |
| 100 | 480.77/240.38 | Contact | Contact |
| 167 | 802.88/401.44 | Contact | Contact |
| 200 | 961.54/480.77 | Contact | Contact |
| 250 | 1201.92/600.96 | Contact | Contact |
| 330 | 1586.54/793.27 | Contact | Contact |
12. 100V Primary - 400 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.5 | - | Contact |
| 5 | 12.5 | - | Contact |
| 7.5 | 18.75 | - | Contact |
| 10 | 25 | Contact | Contact |
| 15 | 37.5 | Contact | Contact |
| 25 | 62.5 | Contact | Contact |
| 37.5 | 93.75 | Contact | Contact |
| 50 | 125 | Contact | Contact |
| 75 | 187.5 | Contact | Contact |
| 100 | 250 | Contact | Contact |
| 167 | 417.5 | Contact | Contact |
| 200 | 500 | Contact | Contact |
| 250 | 625 | Contact | Contact |
| 330 | 825 | Contact | Contact |
13. 100V Primary - 380 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.89 | - | Contact |
| 5 | 13.16 | - | Contact |
| 7.5 | 19.74 | - | Contact |
| 10 | 26.32 | Contact | Contact |
| 15 | 39.47 | Contact | Contact |
| 25 | 65.79 | Contact | Contact |
| 37.5 | 98.68 | Contact | Contact |
| 50 | 131.58 | Contact | Contact |
| 75 | 197.37 | Contact | Contact |
| 100 | 263.16 | Contact | Contact |
| 167 | 439.47 | Contact | Contact |
| 200 | 526.32 | Contact | Contact |
| 250 | 657.89 | Contact | Contact |
| 330 | 868.42 | Contact | Contact |
14. 100V Primary - 347 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 8.65 | - | Contact |
| 5 | 14.41 | - | Contact |
| 7.5 | 21.61 | - | Contact |
| 10 | 28.82 | Contact | Contact |
| 15 | 43.23 | Contact | Contact |
| 25 | 72.05 | Contact | Contact |
| 37.5 | 108.07 | Contact | Contact |
| 50 | 144.09 | Contact | Contact |
| 75 | 216.14 | Contact | Contact |
| 100 | 288.18 | Contact | Contact |
| 167 | 481.27 | Contact | Contact |
| 200 | 576.37 | Contact | Contact |
| 250 | 720.46 | Contact | Contact |
| 330 | 951.01 | Contact | Contact |
15. 100V Primary - 277 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 10.83 | - | Contact |
| 5 | 18.05 | - | Contact |
| 7.5 | 27.08 | - | Contact |
| 10 | 36.10 | Contact | Contact |
| 15 | 54.15 | Contact | Contact |
| 25 | 90.25 | Contact | Contact |
| 37.5 | 135.38 | Contact | Contact |
| 50 | 180.51 | Contact | Contact |
| 75 | 270.76 | Contact | Contact |
| 100 | 361.01 | Contact | Contact |
| 167 | 602.89 | Contact | Contact |
| 200 | 722.02 | Contact | Contact |
| 250 | 902.53 | Contact | Contact |
| 330 | 1191.34 | Contact | Contact |
16. 100V Primary - 240 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 12.5 | - | Contact |
| 5 | 20.83 | - | Contact |
| 7.5 | 31.25 | - | Contact |
| 10 | 41.67 | Contact | Contact |
| 15 | 62.5 | Contact | Contact |
| 25 | 104.17 | Contact | Contact |
| 37.5 | 156.25 | Contact | Contact |
| 50 | 208.33 | Contact | Contact |
| 75 | 312.5 | Contact | Contact |
| 100 | 416.67 | Contact | Contact |
| 167 | 695.83 | Contact | Contact |
| 200 | 833.33 | Contact | Contact |
| 250 | 1041.67 | Contact | Contact |
| 330 | 1375 | Contact | Contact |
17. 100V Primary - 120/240 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 25/12.5 | - | Contact |
| 5 | 41.67/20.83 | - | Contact |
| 7.5 | 62.5/31.25 | - | Contact |
| 10 | 83.33/41.67 | Contact | Contact |
| 15 | 125/62.5 | Contact | Contact |
| 25 | 208.33/104.17 | Contact | Contact |
| 37.5 | 312.5/156.25 | Contact | Contact |
| 50 | 416.67/208.33 | Contact | Contact |
| 75 | 625/312.5 | Contact | Contact |
| 100 | 833.33/416.67 | Contact | Contact |
| 167 | 1391.67/695.83 | Contact | Contact |
| 200 | 1666.67/833.33 | Contact | Contact |
| 250 | 2083.33/1041.67 | Contact | Contact |
| 330 | 2750/1375 | Contact | Contact |
18. 100V Primary - 230 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 13.04 | - | Contact |
| 5 | 21.74 | - | Contact |
| 7.5 | 32.61 | - | Contact |
| 10 | 43.48 | Contact | Contact |
| 15 | 65.22 | Contact | Contact |
| 25 | 108.70 | Contact | Contact |
| 37.5 | 163.04 | Contact | Contact |
| 50 | 217.39 | Contact | Contact |
| 75 | 326.09 | Contact | Contact |
| 100 | 434.78 | Contact | Contact |
| 167 | 726.09 | Contact | Contact |
| 200 | 869.57 | Contact | Contact |
| 250 | 1086.96 | Contact | Contact |
| 330 | 1434.78 | Contact | Contact |
19. 100V Primary - 115/230 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 26.09/13.04 | - | Contact |
| 5 | 43.48/21.74 | - | Contact |
| 7.5 | 65.22/32.61 | - | Contact |
| 10 | 86.96/43.48 | Contact | Contact |
| 15 | 130.43/65.22 | Contact | Contact |
| 25 | 217.39/108.7 | Contact | Contact |
| 37.5 | 326.09/163.04 | Contact | Contact |
| 50 | 434.78/217.39 | Contact | Contact |
| 75 | 652.17/326.09 | Contact | Contact |
| 100 | 869.57/434.78 | Contact | Contact |
| 167 | 1452.17/726.09 | Contact | Contact |
| 200 | 1739.13/869.57 | Contact | Contact |
| 250 | 2173.91/1086.96 | Contact | Contact |
| 330 | 2869.57/1434.78 | Contact | Contact |
20. 100V Primary - 220 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 13.64 | - | Contact |
| 5 | 22.73 | - | Contact |
| 7.5 | 34.09 | - | Contact |
| 10 | 45.45 | Contact | Contact |
| 15 | 68.18 | Contact | Contact |
| 25 | 113.64 | Contact | Contact |
| 37.5 | 170.45 | Contact | Contact |
| 50 | 227.27 | Contact | Contact |
| 75 | 340.91 | Contact | Contact |
| 100 | 454.55 | Contact | Contact |
| 167 | 759.09 | Contact | Contact |
| 200 | 909.09 | Contact | Contact |
| 250 | 1136.36 | Contact | Contact |
| 330 | 1500 | Contact | Contact |
21. 100V Primary - 110/220 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 27.27/13.64 | - | Contact |
| 5 | 45.45/22.73 | - | Contact |
| 7.5 | 68.18/34.09 | - | Contact |
| 10 | 90.91/45.45 | Contact | Contact |
| 15 | 136.36/68.18 | Contact | Contact |
| 25 | 227.27/113.64 | Contact | Contact |
| 37.5 | 340.91/170.45 | Contact | Contact |
| 50 | 454.55/227.27 | Contact | Contact |
| 75 | 681.82/340.91 | Contact | Contact |
| 100 | 909.09/454.55 | Contact | Contact |
| 167 | 1518.18/759.09 | Contact | Contact |
| 200 | 1818.18/909.09 | Contact | Contact |
| 250 | 2272.73/1136.36 | Contact | Contact |
| 330 | 3000/1500 | Contact | Contact |
22. 100V Primary - 208 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 14.42 | - | Contact |
| 5 | 24.04 | - | Contact |
| 7.5 | 36.06 | - | Contact |
| 10 | 48.08 | Contact | Contact |
| 15 | 72.12 | Contact | Contact |
| 25 | 120.19 | Contact | Contact |
| 37.5 | 180.29 | Contact | Contact |
| 50 | 240.38 | Contact | Contact |
| 75 | 360.58 | Contact | Contact |
| 100 | 480.77 | Contact | Contact |
| 167 | 802.88 | Contact | Contact |
| 200 | 961.54 | Contact | Contact |
| 250 | 1201.92 | Contact | Contact |
| 330 | 1586.54 | Contact | Contact |
23. 100V Primary - 200 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 15 | - | Contact |
| 5 | 25 | - | Contact |
| 7.5 | 37.5 | - | Contact |
| 10 | 50 | Contact | Contact |
| 15 | 75 | Contact | Contact |
| 25 | 125 | Contact | Contact |
| 37.5 | 187.5 | Contact | Contact |
| 50 | 250 | Contact | Contact |
| 75 | 375 | Contact | Contact |
| 100 | 500 | Contact | Contact |
| 167 | 835 | Contact | Contact |
| 200 | 1000 | Contact | Contact |
| 250 | 1250 | Contact | Contact |
| 330 | 1650 | Contact | Contact |
24. 100V Primary - 190 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 15.79 | - | Contact |
| 5 | 26.32 | - | Contact |
| 7.5 | 39.47 | - | Contact |
| 10 | 52.63 | Contact | Contact |
| 15 | 78.95 | Contact | Contact |
| 25 | 131.58 | Contact | Contact |
| 37.5 | 197.37 | Contact | Contact |
| 50 | 263.16 | Contact | Contact |
| 75 | 394.74 | Contact | Contact |
| 100 | 526.32 | Contact | Contact |
| 167 | 878.95 | Contact | Contact |
| 200 | 1052.63 | Contact | Contact |
| 250 | 1315.79 | Contact | Contact |
| 330 | 1736.84 | Contact | Contact |
25. 100V Primary - 120 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 25 | - | Contact |
| 5 | 41.67 | - | Contact |
| 7.5 | 62.5 | - | Contact |
| 10 | 83.33 | Contact | Contact |
| 15 | 125 | Contact | Contact |
| 25 | 208.33 | Contact | Contact |
| 37.5 | 312.5 | Contact | Contact |
| 50 | 416.67 | Contact | Contact |
| 75 | 625 | Contact | Contact |
| 100 | 833.33 | Contact | Contact |
| 167 | 1391.67 | Contact | Contact |
| 200 | 1666.67 | Contact | Contact |
| 250 | 2083.33 | Contact | Contact |
| 330 | 2750 | Contact | Contact |
26. 100V Primary - 115 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 26.09 | - | Contact |
| 5 | 43.48 | - | Contact |
| 7.5 | 65.22 | - | Contact |
| 10 | 86.96 | Contact | Contact |
| 15 | 130.43 | Contact | Contact |
| 25 | 217.39 | Contact | Contact |
| 37.5 | 326.09 | Contact | Contact |
| 50 | 434.78 | Contact | Contact |
| 75 | 652.17 | Contact | Contact |
| 100 | 869.57 | Contact | Contact |
| 167 | 1452.17 | Contact | Contact |
| 200 | 1739.13 | Contact | Contact |
| 250 | 2173.91 | Contact | Contact |
| 330 | 2869.57 | Contact | Contact |
27. 100V Primary - 110 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 27.27 | - | Contact |
| 5 | 45.45 | - | Contact |
| 7.5 | 68.18 | - | Contact |
| 10 | 90.91 | Contact | Contact |
| 15 | 136.36 | Contact | Contact |
| 25 | 227.27 | Contact | Contact |
| 37.5 | 340.91 | Contact | Contact |
| 50 | 454.55 | Contact | Contact |
| 75 | 681.82 | Contact | Contact |
| 100 | 909.09 | Contact | Contact |
| 167 | 1518.18 | Contact | Contact |
| 200 | 1818.18 | Contact | Contact |
| 250 | 2272.73 | Contact | Contact |
| 330 | 3000 | Contact | Contact |
28. 100V Primary - 100 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 30 | - | Contact |
| 5 | 50 | - | Contact |
| 7.5 | 75 | - | Contact |
| 10 | 100 | Contact | Contact |
| 15 | 150 | Contact | Contact |
| 25 | 250 | Contact | Contact |
| 37.5 | 375 | Contact | Contact |
| 50 | 500 | Contact | Contact |
| 75 | 750 | Contact | Contact |
| 100 | 1000 | Contact | Contact |
| 167 | 1670 | Contact | Contact |
| 200 | 2000 | Contact | Contact |
| 250 | 2500 | Contact | Contact |
| 330 | 3300 | Contact | Contact |