J. 347 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
347V Primary, Copper Wound, 1 Phase Autotransformers
| kVA | Select Secondary Voltage Below | ||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | |
| 3 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 5 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 7 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 10 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 15 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 25 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 37 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 50 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 75 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| 100 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact |
| kVA | Select Secondary Voltage Below | |||||||
| 277V | 240V | 230V | 220V | 208V | 200V | 190V | ||
| 3 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 5 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 7 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 10 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 15 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 25 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 37 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 50 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 75 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 100 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
Output Amps
| kVA | Output Amps at: | ||||||||||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | 277V | 240V | 230V | 220V | 208V | 200V | 190V | ||
| 3 | 5 | 5.2 | 5.5 | 6.3 | 6.52 | 6.8 | 7.2 | 7.5 | 7.9 | 10.8 | 12.5 | 13 | 13.6 | 14.4 | 15 | 15.8 | |
| 5 | 8.3 | 8.7 | 9.1 | 10.4 | 10.9 | 11.4 | 12 | 12.5 | 13.2 | 18.1 | 20.8 | 21.7 | 22.7 | 24 | 25 | 26.3 | |
| 7 | 11.7 | 12.2 | 12.7 | 14.6 | 15.2 | 15.9 | 16.8 | 17.5 | 18.4 | 25.3 | 29.2 | 30.4 | 31.8 | 33.7 | 35 | 36.8 | |
| 10 | 16.7 | 17.4 | 18.2 | 20.8 | 21.74 | 22.7 | 24 | 25 | 26.3 | 36.1 | 41.7 | 43.5 | 45.5 | 48.1 | 50 | 52.6 | |
| 15 | 25 | 26.1 | 27.3 | 31.3 | 32.61 | 34.1 | 36.1 | 37.5 | 39.5 | 54.2 | 62.5 | 65.2 | 68.2 | 72.1 | 75 | 79 | |
| 25 | 41.7 | 43.5 | 45.5 | 52.1 | 54.35 | 56.8 | 60.1 | 62.5 | 65.8 | 90.3 | 104.2 | 108.7 | 113.6 | 120.2 | 125 | 131.6 | |
| 37 | 61.7 | 64.4 | 67.3 | 77.1 | 80.43 | 84.1 | 88.9 | 92.5 | 97.4 | 133.6 | 154.2 | 160.9 | 168.2 | 177.9 | 185 | 194.7 | |
| 50 | 83.3 | 86.9 | 90.9 | 104.2 | 108.7 | 113.64 | 120.2 | 125 | 131.6 | 180.5 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | |
| 75 | 125 | 130.4 | 136.4 | 156.3 | 163 | 170.45 | 180.3 | 187.5 | 197.4 | 270.76 | 312.5 | 326.1 | 340.9 | 360.6 | 375 | 394.7 | |
| 100 | 166.7 | 173.9 | 181.8 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | 361.01 | 416.7 | 434.8 | 454.6 | 480.8 | 500 | 526.3 | |