O. 208 Volts Primary, Single Phase Autotransformers
Select a Different Primary Configuration »
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
208V Primary, Copper Wound, 1 Phase Autotransformers
| kVA | Select Secondary Voltage Below | ||||||
| 416V | 400V | 380V | 347V | 277V | 240V | 230V | |
| 3 | T51910 | T51920 | T51930 | T51940 | T51950 | T51960 | T51970 |
| 5 | T51911 | T51921 | T51931 | T51941 | T51951 | T51961 | T51971 |
| 7 | T51912 | T51922 | T51932 | T51942 | T51952 | T51962 | T51972 |
| 10 | T51913 | T51923 | T51933 | T51943 | T51953 | T51963 | T51973 |
| 15 | T51914 | T51924 | T51934 | T51944 | T51954 | T51964 | T51974 |
| 25 | T51915 | T51925 | T51935 | T51945 | T51955 | T51965 | T51975 |
| 37 | T51916 | T51926 | T51936 | T51946 | T51956 | T51966 | T51976 |
| 50 | T51917 | T51927 | T51937 | T51947 | T51957 | T51967 | T51977 |
| 75 | T51918 | T51928 | T51938 | T51948 | T51958 | T51968 | T51978 |
| 100 | T51919 | T51929 | T51939 | T51949 | T51959 | T51969 | T51979 |
| kVA | Select Secondary Voltage Below | ||||||
| 220V | 208V | 200V | 190V | 120V | 115V | 110V | |
| 3 | T51980 | T51990 | T52000 | T52010 | T52020 | T52030 | T52040 |
| 5 | T51981 | T51991 | T52001 | T52011 | T52021 | T52031 | T52041 |
| 7 | T51982 | T51992 | T52002 | T52012 | T52022 | T52032 | T52042 |
| 10 | T51983 | T51993 | T52003 | T52013 | T52023 | T52033 | T52043 |
| 15 | T51984 | T51994 | T52004 | T52014 | T52024 | T52034 | T52044 |
| 25 | T51985 | T51995 | T52005 | T52015 | T52025 | T52035 | T52045 |
| 37 | T51986 | T51996 | T52006 | T52016 | T52026 | T52036 | T52046 |
| 50 | T51987 | T51997 | T52007 | T52017 | T52027 | T52037 | T52047 |
| 75 | T51988 | T51998 | T52008 | T52018 | T52028 | T52038 | T52048 |
| 100 | T51989 | T51999 | T52009 | T52019 | T52029 | T52039 | T52049 |
Output Amps
| kVA | Output Amps at: | |||||||||||||
| 416V | 400V | 380V | 347V | 277V | 240V | 230V | 220V | 208V | 200V | 190V | 120V | 115V | 110V | |
| 3 | 7.2 | 7.5 | 7.9 | 8.7 | 10.8 | 12.5 | 13 | 13.6 | 14.4 | 15 | 15.8 | 25 | 26.1 | 27.3 |
| 5 | 12 | 12.5 | 13.2 | 14.4 | 18.1 | 20.8 | 21.7 | 22.7 | 24 | 25 | 26.3 | 41.7 | 43.5 | 45.5 |
| 7 | 16.8 | 17.5 | 18.4 | 20.2 | 25.3 | 29.2 | 30.4 | 31.8 | 33.7 | 35 | 36.8 | 58.3 | 60.9 | 63.6 |
| 10 | 24 | 25 | 26.3 | 28.8 | 36.1 | 41.7 | 43.5 | 45.5 | 48.1 | 50 | 52.6 | 83.3 | 86.96 | 90.9 |
| 15 | 36.1 | 37.5 | 39.5 | 43.2 | 54.2 | 62.5 | 65.2 | 68.2 | 72.1 | 75 | 79 | 125 | 130.4 | 136.4 |
| 25 | 60.1 | 62.5 | 65.8 | 72.1 | 90.3 | 104.2 | 108.7 | 113.6 | 120.2 | 125 | 131.6 | 208.3 | 217.4 | 227.3 |
| 37 | 88.9 | 92.5 | 97.4 | 106.6 | 133.6 | 154.2 | 160.9 | 168.2 | 177.9 | 185 | 194.7 | 308.3 | 321.7 | 336.4 |
| 50 | 120.2 | 125 | 131.6 | 144.1 | 180.5 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | 416.7 | 434.8 | 454.6 |
| 75 | 180.3 | 187.5 | 197.4 | 216.1 | 270.76 | 312.5 | 326.1 | 340.9 | 360.6 | 375 | 394.7 | 625 | 652.2 | 681.8 |
| 100 | 240.4 | 250 | 263.2 | 288.2 | 361.01 | 416.7 | 434.8 | 454.6 | 480.8 | 500 | 526.3 | 833.3 | 869.6 | 909.1 |