I. 380 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
380V Primary, Copper Wound, 1 Phase Autotransformers
| kVA | Select Secondary Voltage Below | ||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | ||
| 3 | T50970 | T50980 | T50990 | T51000 | T51010 | T51020 | T51030 | T51040 | |
| 5 | T50971 | T50981 | T50991 | T51001 | T51011 | T51021 | T51031 | T51041 | |
| 7 | T50972 | T50982 | T50992 | T51002 | T51012 | T51022 | T51032 | T51042 | |
| 10 | T50973 | T50983 | T50993 | T51003 | T51013 | T51023 | T51033 | T51043 | |
| 15 | T50974 | T50984 | T50994 | T51004 | T51014 | T51024 | T51034 | T51044 | |
| 25 | T50975 | T50985 | T50995 | T51005 | T51015 | T51025 | T51035 | T51045 | |
| 37 | T50976 | T50986 | T50996 | T51006 | T51016 | T51026 | T51036 | T51046 | |
| 50 | T50977 | T50987 | T50997 | T51007 | T51017 | T51027 | T51037 | T51047 | |
| 75 | T50978 | T50988 | T50998 | T51008 | T51018 | T51028 | T51038 | T51048 | |
| 100 | T50979 | T50989 | T50999 | T51009 | T51019 | T51029 | T51039 | T51049 | |
| kVA | Select Secondary Voltage Below | |||||||
| 347V | 277V | 240V | 230V | 220V | 208V | 200V | 190V | |
| 3 | T51060 | T51070 | T51080 | T51090 | T51100 | T51110 | T51120 | Contact |
| 5 | T51061 | T51071 | T51081 | T51091 | T51101 | T51111 | T51121 | Contact |
| 7 | T51062 | T51072 | T51082 | T51092 | T51102 | T51112 | T51122 | Contact |
| 10 | T51063 | T51073 | T51083 | T51093 | T51103 | T51113 | T51123 | Contact |
| 15 | T51064 | T51074 | T51084 | T51094 | T51104 | T51114 | T51124 | Contact |
| 25 | T51065 | T51075 | T51085 | T51095 | T51105 | T51115 | T51125 | Contact |
| 37 | T51066 | T51076 | T51086 | T51096 | T51106 | T51116 | T51126 | Contact |
| 50 | T51067 | T51077 | T51087 | T51097 | T51107 | T51117 | T51127 | Contact |
| 75 | T51068 | T51078 | T51088 | T51098 | T51108 | T51118 | T51128 | Contact |
| 100 | T51069 | T51079 | T51089 | T51099 | T51109 | T51119 | T51129 | Contact |
Output Amps
| kVA | Output Amps at: | ||||||||||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 347V | 277V | 240V | 230V | 220V | 208V | 200V | 190V | ||
| 3 | 5 | 5.2 | 5.5 | 6.3 | 6.52 | 6.8 | 7.2 | 7.5 | 8.7 | 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 | 14.4 | 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 | 20.2 | 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 | 28.8 | 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 | 43.2 | 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 | 72.1 | 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 | 106.6 | 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 | 144.1 | 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 | 216.1 | 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 | 288.2 | 361.01 | 416.7 | 434.8 | 454.6 | 480.8 | 500 | 526.3 | |