Q. 120 Volt Primary Three Phase Isolation Transformers
TEMCo Three 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. 600Y/347 | 12. 230Y/133 |
| 2. 575Y/330 | 13. 220Y/127 |
| 3. 550Y/316 | 14. 216 Delta |
| 4. 480Y/277 | 15. 208Y/120 |
| 5. 460 Delta | 16. 200Y/115 |
| 6. 440 Delta | 17. 190Y/110 |
| 7. 416Y/240 | 18. 120 Delta |
| 8. 400Y/230 | 19. 115 Delta |
| 9. 380Y/220 | 20. 110 Delta |
| 10. 240Y/139 | 21. 100 Delta |
| 11. 240CTD/120 | |
1. 120V Primary - 600Y/347 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 2.89 | - | T48700 |
| 6 | 5.77 | - | T48701 |
| 9 | 8.66 | - | T48702 |
| 15 | 14.43 | T42652 | T48703 |
| 30 | 28.87 | T42653 | T48704 |
| 45 | 43.30 | T42654 | T48705 |
| 75 | 72.17 | T42655 | T48706 |
| 112.5 | 108.26 | T42656 | T48707 |
| 150 | 144.34 | T42657 | T48708 |
| 225 | 216.51 | T42658 | T48709 |
| 300 | 288.68 | T42659 | T48710 |
| 450 | 433.03 | T42660 | T48711 |
| 500 | 481.14 | T42661 | T48712 |
| 600 | 577.37 | T42662 | T48713 |
| 750 | 721.71 | T42663 | T48714 |
2. 120V Primary - 575Y/230 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 3.01 | - | T48715 |
| 6 | 6.02 | - | T48716 |
| 9 | 9.04 | - | T48717 |
| 15 | 15.06 | T42664 | T48718 |
| 30 | 30.12 | T42665 | T48719 |
| 45 | 45.19 | T42666 | T48720 |
| 75 | 75.31 | T42667 | T48721 |
| 112.5 | 112.96 | T42668 | T48722 |
| 150 | 150.62 | T42669 | T48723 |
| 225 | 225.93 | T42670 | T48724 |
| 300 | 301.24 | T42671 | T48725 |
| 450 | 451.85 | T42672 | T48726 |
| 500 | 502.06 | T42673 | T48727 |
| 600 | 602.47 | T42674 | T48728 |
| 750 | 753.09 | T42675 | T48729 |
3. 120V Primary - 550Y/316 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 3.15 | - | T48730 |
| 6 | 6.30 | - | T48731 |
| 9 | 9.45 | - | T48732 |
| 15 | 15.75 | T42676 | T48733 |
| 30 | 31.49 | T42677 | T48734 |
| 45 | 47.24 | T42678 | T48735 |
| 75 | 78.73 | T42679 | T48736 |
| 112.5 | 118.10 | T42680 | T48737 |
| 150 | 157.46 | T42681 | T48738 |
| 225 | 236.20 | T42682 | T48739 |
| 300 | 314.93 | T42683 | T48740 |
| 450 | 472.39 | T42684 | T48741 |
| 500 | 524.88 | T42685 | T48742 |
| 600 | 629.86 | T42686 | T48743 |
| 750 | 787.32 | T42687 | T48744 |
4. 120V Primary - 480Y/277 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 3.61 | - | T48745 |
| 6 | 7.22 | - | T48746 |
| 9 | 10.83 | - | T48747 |
| 15 | 18.04 | T42688 | T48748 |
| 30 | 36.09 | T42689 | T48749 |
| 45 | 54.13 | T42690 | T48750 |
| 75 | 90.21 | T42691 | T48751 |
| 112.5 | 135.32 | T42692 | T48752 |
| 150 | 180.43 | T42693 | T48753 |
| 225 | 270.64 | T42694 | T48754 |
| 300 | 360.85 | T42695 | T48755 |
| 450 | 541.28 | T42696 | T48756 |
| 500 | 601.42 | T42697 | T48757 |
| 600 | 721.71 | T42698 | T48758 |
| 750 | 902.14 | T42699 | T48759 |
5. 120V Primary - 460V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 3.77 | - | T48760 |
| 6 | 7.53 | - | T48761 |
| 9 | 11.30 | - | T48762 |
| 15 | 18.83 | T42700 | T48763 |
| 30 | 37.65 | T42701 | T48764 |
| 45 | 56.48 | T42702 | T48765 |
| 75 | 94.14 | T42703 | T48766 |
| 112.5 | 141.20 | T42704 | T48767 |
| 150 | 188.27 | T42705 | T48768 |
| 225 | 282.41 | T42706 | T48769 |
| 300 | 376.54 | T42707 | T48770 |
| 450 | 564.82 | T42708 | T48771 |
| 500 | 627.57 | T42709 | T48772 |
| 600 | 753.09 | T42710 | T48773 |
| 750 | 941.36 | T42711 | T48774 |
6. 120V Primary - 440V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 3.94 | - | T48775 |
| 6 | 7.87 | - | T48776 |
| 9 | 11.81 | - | T48777 |
| 15 | 19.68 | T42712 | T48778 |
| 30 | 39.37 | T42713 | T48779 |
| 45 | 59.05 | T42714 | T48780 |
| 75 | 98.41 | T42715 | T48781 |
| 112.5 | 147.62 | T42716 | T48782 |
| 150 | 196.83 | T42717 | T48783 |
| 225 | 295.24 | T42718 | T48784 |
| 300 | 393.66 | T42719 | T48785 |
| 450 | 590.49 | T42720 | T48786 |
| 500 | 656.10 | T42721 | T48787 |
| 600 | 787.32 | T42722 | T48788 |
| 750 | 984.15 | T42723 | T48789 |
7. 120V Primary - 416Y/240 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 4.16 | - | T48790 |
| 6 | 8.33 | - | T48791 |
| 9 | 12.49 | - | T48792 |
| 15 | 20.82 | T42724 | T48793 |
| 30 | 41.64 | T42725 | T48794 |
| 45 | 62.46 | T42726 | T48795 |
| 75 | 104.09 | T42727 | T48796 |
| 112.5 | 156.14 | T42728 | T48797 |
| 150 | 208.19 | T42729 | T48798 |
| 225 | 312.28 | T42730 | T48799 |
| 300 | 416.37 | T42731 | T48800 |
| 450 | 624.56 | T42732 | T48801 |
| 500 | 693.95 | T42733 | T48802 |
| 600 | 832.74 | T42734 | T48803 |
| 750 | 1040.93 | T42735 | T48804 |
8. 120V Primary - 400Y/230 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 4.33 | - | T48805 |
| 6 | 8.66 | - | T48806 |
| 9 | 12.99 | - | T48807 |
| 15 | 21.65 | T42736 | T48808 |
| 30 | 43.30 | T42737 | T48809 |
| 45 | 64.95 | T42738 | T48810 |
| 75 | 108.26 | T42739 | T48811 |
| 112.5 | 162.38 | T42740 | T48812 |
| 150 | 216.51 | T42741 | T48813 |
| 225 | 324.77 | T42742 | T48814 |
| 300 | 433.03 | T42743 | T48815 |
| 450 | 649.54 | T42744 | T48816 |
| 500 | 721.71 | T42745 | T48817 |
| 600 | 866.05 | T42746 | T48818 |
| 750 | 1082.56 | T42747 | T48819 |
9. 120V Primary - 380Y/220 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 4.56 | - | T48820 |
| 6 | 9.12 | - | T48821 |
| 9 | 13.67 | - | T48822 |
| 15 | 22.79 | T42748 | T48823 |
| 30 | 45.58 | T42749 | T48824 |
| 45 | 68.37 | T42750 | T48825 |
| 75 | 113.95 | T42751 | T48826 |
| 112.5 | 170.93 | T42752 | T48827 |
| 150 | 227.91 | T42753 | T48828 |
| 225 | 341.86 | T42754 | T48829 |
| 300 | 455.82 | T42755 | T48830 |
| 450 | 683.72 | T42756 | T48831 |
| 500 | 759.69 | T42757 | T48832 |
| 600 | 911.63 | T42758 | T48833 |
| 750 | 1139.54 | T42759 | T48834 |
10. 120V Primary - 240Y/139 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.22 | - | T48835 |
| 6 | 14.43 | - | T48836 |
| 9 | 21.65 | - | T48837 |
| 15 | 36.09 | T42760 | T48838 |
| 30 | 72.17 | T42761 | T48839 |
| 45 | 108.26 | T42762 | T48840 |
| 75 | 180.43 | T42763 | T48841 |
| 112.5 | 270.64 | T42764 | T48842 |
| 150 | 360.85 | T42765 | T48843 |
| 225 | 541.28 | T42766 | T48844 |
| 300 | 721.71 | T42767 | T48845 |
| 450 | 1082.56 | T42768 | T48846 |
| 500 | 1202.85 | T42769 | T48847 |
| 600 | 1443.42 | T42770 | T48848 |
| 750 | 1804.27 | T42771 | T48849 |
11. 120V Primary - 240CTD/120 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.22 | - | T48850 |
| 6 | 14.43 | - | T48851 |
| 9 | 21.65 | - | T48852 |
| 15 | 36.09 | T42772 | T48853 |
| 30 | 72.17 | T42773 | T48854 |
| 45 | 108.26 | T42774 | T48855 |
| 75 | 180.43 | T42775 | T48856 |
| 112.5 | 270.64 | T42776 | T48857 |
| 150 | 360.85 | T42777 | T48858 |
| 225 | 541.28 | T42778 | T48859 |
| 300 | 721.71 | T42779 | T48860 |
| 450 | 1082.56 | T42780 | T48861 |
| 500 | 1202.85 | T42781 | T48862 |
| 600 | 1443.42 | T42782 | T48863 |
| 750 | 1804.27 | T42783 | T48864 |
12. 120V Primary - 230Y/133 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.53 | - | T48865 |
| 6 | 15.06 | - | T48866 |
| 9 | 22.59 | - | T48867 |
| 15 | 37.65 | T42784 | T48868 |
| 30 | 75.31 | T42785 | T48869 |
| 45 | 112.96 | T42786 | T48870 |
| 75 | 188.27 | T42787 | T48871 |
| 112.5 | 282.41 | T42788 | T48872 |
| 150 | 376.54 | T42789 | T48873 |
| 225 | 564.82 | T42790 | T48874 |
| 300 | 753.09 | T42791 | T48875 |
| 450 | 1129.63 | T42792 | T48876 |
| 500 | 1255.15 | T42793 | T48877 |
| 600 | 1506.18 | T42794 | T48878 |
| 750 | 1882.72 | T42795 | T48879 |
13. 120V Primary - 220Y/127 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 7.87 | - | T48880 |
| 6 | 15.75 | - | T48881 |
| 9 | 23.62 | - | T48882 |
| 15 | 39.37 | T42796 | T48883 |
| 30 | 78.73 | T42797 | T48884 |
| 45 | 118.10 | T42798 | T48885 |
| 75 | 196.83 | T42799 | T48886 |
| 112.5 | 295.24 | T42800 | T48887 |
| 150 | 393.66 | T42801 | T48888 |
| 225 | 590.49 | T42802 | T48889 |
| 300 | 787.32 | T42803 | T48890 |
| 450 | 1180.98 | T42804 | T48891 |
| 500 | 1312.20 | T42805 | T48892 |
| 600 | 1574.64 | T42806 | T48893 |
| 750 | 1968.30 | T42807 | T48894 |
14. 120V Primary - 216V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 8.02 | - | T48895 |
| 6 | 16.04 | - | T48896 |
| 9 | 24.06 | - | T48897 |
| 15 | 40.09 | T42808 | T48898 |
| 30 | 80.19 | T42809 | T48899 |
| 45 | 120.28 | T42810 | T48900 |
| 75 | 200.47 | T42811 | T48901 |
| 112.5 | 300.71 | T42812 | T48902 |
| 150 | 400.95 | T42813 | T48903 |
| 225 | 601.42 | T42814 | T48904 |
| 300 | 801.90 | T42815 | T48905 |
| 450 | 1202.85 | T42816 | T48906 |
| 500 | 1336.50 | T42817 | T48907 |
| 600 | 1603.80 | T42818 | T48908 |
| 750 | 2004.75 | T42819 | T48909 |
15. 120V Primary - 208Y/120 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 8.33 | - | T48910 |
| 6 | 16.65 | - | T48911 |
| 9 | 24.98 | - | T48912 |
| 15 | 41.64 | T42820 | T48913 |
| 30 | 83.27 | T42821 | T48914 |
| 45 | 124.91 | T42822 | T48915 |
| 75 | 208.19 | T42823 | T48916 |
| 112.5 | 312.28 | T42824 | T48917 |
| 150 | 416.37 | T42825 | T48918 |
| 225 | 624.56 | T42826 | T48919 |
| 300 | 832.74 | T42827 | T48920 |
| 450 | 1249.11 | T42828 | T48921 |
| 500 | 1387.90 | T42829 | T48922 |
| 600 | 1665.48 | T42830 | T48923 |
| 750 | 2081.85 | T42831 | T48924 |
16. 120V Primary - 200Y/115 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 8.66 | - | T48925 |
| 6 | 17.32 | - | T48926 |
| 9 | 25.98 | - | T48927 |
| 15 | 43.30 | T42832 | T48928 |
| 30 | 86.61 | T42833 | T48929 |
| 45 | 129.91 | T42834 | T48930 |
| 75 | 216.51 | T42835 | T48931 |
| 112.5 | 324.77 | T42836 | T48932 |
| 150 | 433.03 | T42837 | T48933 |
| 225 | 649.54 | T42838 | T48934 |
| 300 | 866.05 | T42839 | T48935 |
| 450 | 1299.08 | T42840 | T48936 |
| 500 | 1443.42 | T42841 | T48937 |
| 600 | 1732.10 | T42842 | T48938 |
| 750 | 2165.13 | T42843 | T48939 |
17. 120V Primary - 190Y/110 Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 9.12 | - | T48940 |
| 6 | 18.23 | - | T48941 |
| 9 | 27.35 | - | T48942 |
| 15 | 45.58 | T42844 | T48943 |
| 30 | 91.16 | T42845 | T48944 |
| 45 | 136.74 | T42846 | T48945 |
| 75 | 227.91 | T42847 | T48946 |
| 112.5 | 341.86 | T42848 | T48947 |
| 150 | 455.82 | T42849 | T48948 |
| 225 | 683.72 | T42850 | T48949 |
| 300 | 911.63 | T42851 | T48950 |
| 450 | 1367.45 | T42852 | T48951 |
| 500 | 1519.39 | T42853 | T48952 |
| 600 | 1823.26 | T42854 | T48953 |
| 750 | 2279.08 | T42855 | T48954 |
18. 120V Primary - 120V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 14.43 | - | T48955 |
| 6 | 28.87 | - | T48956 |
| 9 | 43.30 | - | T48957 |
| 15 | 72.17 | T42856 | T48958 |
| 30 | 144.34 | T42857 | T48959 |
| 45 | 216.51 | T42858 | T48960 |
| 75 | 360.85 | T42859 | T48961 |
| 112.5 | 541.28 | T42860 | T48962 |
| 150 | 721.71 | T42861 | T48963 |
| 225 | 1082.56 | T42862 | T48964 |
| 300 | 1443.42 | T42863 | T48965 |
| 450 | 2165.13 | T42864 | T48966 |
| 500 | 2405.70 | T42865 | T48967 |
| 600 | 2886.84 | T42866 | T48968 |
| 750 | 3608.55 | T42867 | T48969 |
19. 120V Primary - 115V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 15.06 | - | T48970 |
| 6 | 30.12 | - | T48971 |
| 9 | 45.19 | - | T48972 |
| 15 | 75.31 | T42868 | T48973 |
| 30 | 150.62 | T42869 | T48974 |
| 45 | 225.93 | T42870 | T48975 |
| 75 | 376.54 | T42871 | T48976 |
| 112.5 | 564.82 | T42872 | T48977 |
| 150 | 753.09 | T42873 | T48978 |
| 225 | 1129.63 | T42874 | T48979 |
| 300 | 1506.18 | T42875 | T48980 |
| 450 | 2259.26 | T42876 | T48981 |
| 500 | 2510.29 | T42877 | T48982 |
| 600 | 3012.35 | T42878 | T48983 |
| 750 | 3765.44 | T42879 | T48984 |
20. 120V Primary - 110V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 15.75 | - | T48985 |
| 6 | 31.49 | - | T48986 |
| 9 | 47.24 | - | T48987 |
| 15 | 78.73 | T42880 | T48988 |
| 30 | 157.46 | T42881 | T48989 |
| 45 | 236.20 | T42882 | T48990 |
| 75 | 393.66 | T42883 | T48991 |
| 112.5 | 590.49 | T42884 | T48992 |
| 150 | 787.32 | T42885 | T48993 |
| 225 | 1180.98 | T42886 | T48994 |
| 300 | 1574.64 | T42887 | T48995 |
| 450 | 2361.96 | T42888 | T48996 |
| 500 | 2624.40 | T42889 | T48997 |
| 600 | 3149.28 | T42890 | T48998 |
| 750 | 3936.59 | T42891 | T48999 |
21. 120V Primary - 100V Delta Secondary
| kVA | Output Amps | Aluminum | Copper |
| 3 | 17.32 | - | T49000 |
| 6 | 34.64 | - | T49001 |
| 9 | 51.96 | - | T49002 |
| 15 | 86.61 | T42892 | T49003 |
| 30 | 173.21 | T42893 | T49004 |
| 45 | 259.82 | T42894 | T49005 |
| 75 | 433.03 | T42895 | T49006 |
| 112.5 | 649.54 | T42896 | T49007 |
| 150 | 866.05 | T42897 | T49008 |
| 225 | 1299.08 | T42898 | T49009 |
| 300 | 1732.10 | T42899 | T49010 |
| 450 | 2598.15 | T42900 | T49011 |
| 500 | 2886.84 | T42901 | T49012 |
| 600 | 3464.20 | T42902 | T49013 |
| 750 | 4330.25 | T42903 | T49014 |