L. 400 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. 400V Primary - 600 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5 | - | T31616 |
5 | 8.33 | - | T31617 |
7.5 | 12.5 | - | T31618 |
10 | 16.67 | T20643 | T31619 |
15 | 25 | T20644 | T31620 |
25 | 41.67 | T20645 | T31621 |
37.5 | 62.5 | T20646 | T31622 |
50 | 83.33 | T20647 | T31623 |
75 | 125 | T20648 | T31624 |
100 | 166.67 | T20649 | T31625 |
167 | 278.33 | T20650 | T31626 |
200 | 333.33 | T20651 | T31627 |
250 | 416.67 | T20652 | T31628 |
330 | 550 | T20653 | T31629 |
2. 400V Primary - 575 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5.22 | - | T31630 |
5 | 8.70 | - | T31631 |
7.5 | 13.04 | - | T31632 |
10 | 17.39 | T20657 | T31633 |
15 | 26.09 | T20658 | T31634 |
25 | 43.48 | T20659 | T31635 |
37.5 | 65.22 | T20660 | T31636 |
50 | 86.96 | T20661 | T31637 |
75 | 130.43 | T20662 | T31638 |
100 | 173.91 | T20663 | T31639 |
167 | 290.43 | T20664 | T31640 |
200 | 347.83 | T20665 | T31641 |
250 | 434.78 | T20666 | T31642 |
330 | 573.91 | T20667 | T31643 |
3. 400V Primary - 550 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5.45 | - | T31644 |
5 | 9.09 | - | T31645 |
7.5 | 13.64 | - | T31646 |
10 | 18.18 | T20671 | T31647 |
15 | 27.27 | T20672 | T31648 |
25 | 45.45 | T20673 | T31649 |
37.5 | 68.18 | T20674 | T31650 |
50 | 90.91 | T20675 | T31651 |
75 | 136.36 | T20676 | T31652 |
100 | 181.82 | T20677 | T31653 |
167 | 303.64 | T20678 | T31654 |
200 | 363.64 | T20679 | T31655 |
250 | 454.55 | T20680 | T31656 |
330 | 600 | T20681 | T31657 |
4. 400V Primary - 480 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.25 | - | T31658 |
5 | 10.42 | - | T31659 |
7.5 | 15.63 | - | T31660 |
10 | 20.83 | T20685 | T31661 |
15 | 31.25 | T20686 | T31662 |
25 | 52.08 | T20687 | T31663 |
37.5 | 78.13 | T20688 | T31664 |
50 | 104.17 | T20689 | T31665 |
75 | 156.25 | T20690 | T31666 |
100 | 208.33 | T20691 | T31667 |
167 | 347.92 | T20692 | T31668 |
200 | 416.67 | T20693 | T31669 |
250 | 520.83 | T20694 | T31670 |
330 | 687.50 | T20695 | T31671 |
5. 400V Primary - 240/480 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 12.5/6.25 | - | T31672 |
5 | 20.83/10.42 | - | T31673 |
7.5 | 31.25/15.63 | - | T31674 |
10 | 41.67/20.83 | T20699 | T31675 |
15 | 62.5/31.25 | T20700 | T31676 |
25 | 104.17/52.08 | T20701 | T31677 |
37.5 | 156.25/78.13 | T20702 | T31678 |
50 | 208.33/104.17 | T20703 | T31679 |
75 | 312.5/156.25 | T20704 | T31680 |
100 | 416.67/208.33 | T20705 | T31681 |
167 | 695.83/347.92 | T20706 | T31682 |
200 | 833.33/416.67 | T20707 | T31683 |
250 | 1041.67/520.83 | T20708 | T31684 |
330 | 1375/687.5 | T20709 | T31685 |
6. 400V Primary - 460 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.52 | - | T31686 |
5 | 10.87 | - | T31687 |
7.5 | 16.30 | - | T31688 |
10 | 21.74 | T20713 | T31689 |
15 | 32.61 | T20714 | T31690 |
25 | 54.35 | T20715 | T31691 |
37.5 | 81.52 | T20716 | T31692 |
50 | 108.70 | T20717 | T31693 |
75 | 163.04 | T20718 | T31694 |
100 | 217.39 | T20719 | T31695 |
167 | 363.04 | T20720 | T31696 |
200 | 434.78 | T20721 | T31697 |
250 | 543.48 | T20722 | T31698 |
330 | 717.39 | T20723 | T31699 |
7. 400V Primary - 230/460 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.04/6.52 | - | T31700 |
5 | 21.74/10.87 | - | T31701 |
7.5 | 32.61/16.3 | - | T31702 |
10 | 43.48/21.74 | T20727 | T31703 |
15 | 65.22/32.61 | T20728 | T31704 |
25 | 108.7/54.35 | T20729 | T31705 |
37.5 | 163.04/81.52 | T20730 | T31706 |
50 | 217.39/108.7 | T20731 | T31707 |
75 | 326.09/163.04 | T20732 | T31708 |
100 | 434.78/217.39 | T20733 | T31709 |
167 | 726.09/363.04 | T20734 | T31710 |
200 | 869.57/434.78 | T20735 | T31711 |
250 | 1086.96/543.48 | T20736 | T31712 |
330 | 1434.78/717.39 | T20737 | T31713 |
8. 400V Primary - 440 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.82 | - | T31714 |
5 | 11.36 | - | T31715 |
7.5 | 17.05 | - | T31716 |
10 | 22.73 | T20741 | T31717 |
15 | 34.09 | T20742 | T31718 |
25 | 56.82 | T20743 | T31719 |
37.5 | 85.23 | T20744 | T31720 |
50 | 113.64 | T20745 | T31721 |
75 | 170.45 | T20746 | T31722 |
100 | 227.27 | T20747 | T31723 |
167 | 379.55 | T20748 | T31724 |
200 | 454.55 | T20749 | T31725 |
250 | 568.18 | T20750 | T31726 |
330 | 750 | T20751 | T31727 |
9. 400V Primary - 220/440 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.64/6.82 | - | T31728 |
5 | 22.73/11.36 | - | T31729 |
7.5 | 34.09/17.05 | - | T31730 |
10 | 45.45/22.73 | T20755 | T31731 |
15 | 68.18/34.09 | T20756 | T31732 |
25 | 113.64/56.82 | T20757 | T31733 |
37.5 | 170.45/85.23 | T20758 | T31734 |
50 | 227.27/113.64 | T20759 | T31735 |
75 | 340.91/170.45 | T20760 | T31736 |
100 | 454.55/227.27 | T20761 | T31737 |
167 | 759.09/379.55 | T20762 | T31738 |
200 | 909.09/454.55 | T20763 | T31739 |
250 | 1136.36/568.18 | T20764 | T31740 |
330 | 1500/750 | T20765 | T31741 |
10. 400V Primary - 416 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.21 | - | T31742 |
5 | 12.02 | - | T31743 |
7.5 | 18.03 | - | T31744 |
10 | 24.04 | T20769 | T31745 |
15 | 36.06 | T20770 | T31746 |
25 | 60.10 | T20771 | T31747 |
37.5 | 90.14 | T20772 | T31748 |
50 | 120.19 | T20773 | T31749 |
75 | 180.29 | T20774 | T31750 |
100 | 240.38 | T20775 | T31751 |
167 | 401.44 | T20776 | T31752 |
200 | 480.77 | T20777 | T31753 |
250 | 600.96 | T20778 | T31754 |
330 | 793.27 | T20779 | T31755 |
11. 400V Primary - 208/416 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 14.42/7.21 | - | T31756 |
5 | 24.04/12.02 | - | T31757 |
7.5 | 36.06/18.03 | - | T31758 |
10 | 48.08/24.04 | T20783 | T31759 |
15 | 72.12/36.06 | T20784 | T31760 |
25 | 120.19/60.1 | T20785 | T31761 |
37.5 | 180.29/90.14 | T20786 | T31762 |
50 | 240.38/120.19 | T20787 | T31763 |
75 | 360.58/180.29 | T20788 | T31764 |
100 | 480.77/240.38 | T20789 | T31765 |
167 | 802.88/401.44 | T20790 | T31766 |
200 | 961.54/480.77 | T20791 | T31767 |
250 | 1201.92/600.96 | T20792 | T31768 |
330 | 1586.54/793.27 | T20793 | T31769 |
12. 400V Primary - 400 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.5 | - | T31770 |
5 | 12.5 | - | T31771 |
7.5 | 18.75 | - | T31772 |
10 | 25 | T20797 | T31773 |
15 | 37.5 | T20798 | T31774 |
25 | 62.5 | T20799 | T31775 |
37.5 | 93.75 | T20800 | T31776 |
50 | 125 | T20801 | T31777 |
75 | 187.5 | T20802 | T31778 |
100 | 250 | T20803 | T31779 |
167 | 417.5 | T20804 | T31780 |
200 | 500 | T20805 | T31781 |
250 | 625 | T20806 | T31782 |
330 | 825 | T20807 | T31783 |
13. 400V Primary - 380 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.89 | - | T31784 |
5 | 13.16 | - | T31785 |
7.5 | 19.74 | - | T31786 |
10 | 26.32 | T20811 | T31787 |
15 | 39.47 | T20812 | T31788 |
25 | 65.79 | T20813 | T31789 |
37.5 | 98.68 | T20814 | T31790 |
50 | 131.58 | T20815 | T31791 |
75 | 197.37 | T20816 | T31792 |
100 | 263.16 | T20817 | T31793 |
167 | 439.47 | T20818 | T31794 |
200 | 526.32 | T20819 | T31795 |
250 | 657.89 | T20820 | T31796 |
330 | 868.42 | T20821 | T31797 |
14. 400V Primary - 347 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 8.65 | - | T31798 |
5 | 14.41 | - | T31799 |
7.5 | 21.61 | - | T31800 |
10 | 28.82 | T20825 | T31801 |
15 | 43.23 | T20826 | T31802 |
25 | 72.05 | T20827 | T31803 |
37.5 | 108.07 | T20828 | T31804 |
50 | 144.09 | T20829 | T31805 |
75 | 216.14 | T20830 | T31806 |
100 | 288.18 | T20831 | T31807 |
167 | 481.27 | T20832 | T31808 |
200 | 576.37 | T20833 | T31809 |
250 | 720.46 | T20834 | T31810 |
330 | 951.01 | T20835 | T31811 |
15. 400V Primary - 277 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 10.83 | - | T31812 |
5 | 18.05 | - | T31813 |
7.5 | 27.08 | - | T31814 |
10 | 36.10 | T20839 | T31815 |
15 | 54.15 | T20840 | T31816 |
25 | 90.25 | T20841 | T31817 |
37.5 | 135.38 | T20842 | T31818 |
50 | 180.51 | T20843 | T31819 |
75 | 270.76 | T20844 | T31820 |
100 | 361.01 | T20845 | T31821 |
167 | 602.89 | T20846 | T31822 |
200 | 722.02 | T20847 | T31823 |
250 | 902.53 | T20848 | T31824 |
330 | 1191.34 | T20849 | T31825 |
16. 400V Primary - 240 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 12.5 | - | T31826 |
5 | 20.83 | - | T31827 |
7.5 | 31.25 | - | T31828 |
10 | 41.67 | T20853 | T31829 |
15 | 62.5 | T20854 | T31830 |
25 | 104.17 | T20855 | T31831 |
37.5 | 156.25 | T20856 | T31832 |
50 | 208.33 | T20857 | T31833 |
75 | 312.5 | T20858 | T31834 |
100 | 416.67 | T20859 | T31835 |
167 | 695.83 | T20860 | T31836 |
200 | 833.33 | T20861 | T31837 |
250 | 1041.67 | T20862 | T31838 |
330 | 1375 | T20863 | T31839 |
17. 400V Primary - 120/240 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 25/12.5 | - | T31840 |
5 | 41.67/20.83 | - | T31841 |
7.5 | 62.5/31.25 | - | T31842 |
10 | 83.33/41.67 | T20867 | T31843 |
15 | 125/62.5 | T20868 | T31844 |
25 | 208.33/104.17 | T20869 | T31845 |
37.5 | 312.5/156.25 | T20870 | T31846 |
50 | 416.67/208.33 | T20871 | T31847 |
75 | 625/312.5 | T20872 | T31848 |
100 | 833.33/416.67 | T20873 | T31849 |
167 | 1391.67/695.83 | T20874 | T31850 |
200 | 1666.67/833.33 | T20875 | T31851 |
250 | 2083.33/1041.67 | T20876 | T31852 |
330 | 2750/1375 | T20877 | T31853 |
18. 400V Primary - 230 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.04 | - | T31854 |
5 | 21.74 | - | T31855 |
7.5 | 32.61 | - | T31856 |
10 | 43.48 | T20881 | T31857 |
15 | 65.22 | T20882 | T31858 |
25 | 108.70 | T20883 | T31859 |
37.5 | 163.04 | T20884 | T31860 |
50 | 217.39 | T20885 | T31861 |
75 | 326.09 | T20886 | T31862 |
100 | 434.78 | T20887 | T31863 |
167 | 726.09 | T20888 | T31864 |
200 | 869.57 | T20889 | T31865 |
250 | 1086.96 | T20890 | T31866 |
330 | 1434.78 | T20891 | T31867 |
19. 400V Primary - 115/230 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 26.09/13.04 | - | T31868 |
5 | 43.48/21.74 | - | T31869 |
7.5 | 65.22/32.61 | - | T31870 |
10 | 86.96/43.48 | T20895 | T31871 |
15 | 130.43/65.22 | T20896 | T31872 |
25 | 217.39/108.7 | T20897 | T31873 |
37.5 | 326.09/163.04 | T20898 | T31874 |
50 | 434.78/217.39 | T20899 | T31875 |
75 | 652.17/326.09 | T20900 | T31876 |
100 | 869.57/434.78 | T20901 | T31877 |
167 | 1452.17/726.09 | T20902 | T31878 |
200 | 1739.13/869.57 | T20903 | T31879 |
250 | 2173.91/1086.96 | T20904 | T31880 |
330 | 2869.57/1434.78 | T20905 | T31881 |
20. 400V Primary - 220 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.64 | - | T31882 |
5 | 22.73 | - | T31883 |
7.5 | 34.09 | - | T31884 |
10 | 45.45 | T20909 | T31885 |
15 | 68.18 | T20910 | T31886 |
25 | 113.64 | T20911 | T31887 |
37.5 | 170.45 | T20912 | T31888 |
50 | 227.27 | T20913 | T31889 |
75 | 340.91 | T20914 | T31890 |
100 | 454.55 | T20915 | T31891 |
167 | 759.09 | T20916 | T31892 |
200 | 909.09 | T20917 | T31893 |
250 | 1136.36 | T20918 | T31894 |
330 | 1500 | T20919 | T31895 |
21. 400V Primary - 110/220 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 27.27/13.64 | - | T31896 |
5 | 45.45/22.73 | - | T31897 |
7.5 | 68.18/34.09 | - | T31898 |
10 | 90.91/45.45 | T20923 | T31899 |
15 | 136.36/68.18 | T20924 | T31900 |
25 | 227.27/113.64 | T20925 | T31901 |
37.5 | 340.91/170.45 | T20926 | T31902 |
50 | 454.55/227.27 | T20927 | T31903 |
75 | 681.82/340.91 | T20928 | T31904 |
100 | 909.09/454.55 | T20929 | T31905 |
167 | 1518.18/759.09 | T20930 | T31906 |
200 | 1818.18/909.09 | T20931 | T31907 |
250 | 2272.73/1136.36 | T20932 | T31908 |
330 | 3000/1500 | T20933 | T31909 |
22. 400V Primary - 208 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 14.42 | - | T31910 |
5 | 24.04 | - | T31911 |
7.5 | 36.06 | - | T31912 |
10 | 48.08 | T20937 | T31913 |
15 | 72.12 | T20938 | T31914 |
25 | 120.19 | T20939 | T31915 |
37.5 | 180.29 | T20940 | T31916 |
50 | 240.38 | T20941 | T31917 |
75 | 360.58 | T20942 | T31918 |
100 | 480.77 | T20943 | T31919 |
167 | 802.88 | T20944 | T31920 |
200 | 961.54 | T20945 | T31921 |
250 | 1201.92 | T20946 | T31922 |
330 | 1586.54 | T20947 | T31923 |
23. 400V Primary - 200 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 15 | - | T31924 |
5 | 25 | - | T31925 |
7.5 | 37.5 | - | T31926 |
10 | 50 | T20951 | T31927 |
15 | 75 | T20952 | T31928 |
25 | 125 | T20953 | T31929 |
37.5 | 187.5 | T20954 | T31930 |
50 | 250 | T20955 | T31931 |
75 | 375 | T20956 | T31932 |
100 | 500 | T20957 | T31933 |
167 | 835 | T20958 | T31934 |
200 | 1000 | T20959 | T31935 |
250 | 1250 | T20960 | T31936 |
330 | 1650 | T20961 | T31937 |
24. 400V Primary - 190 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 15.79 | - | T31938 |
5 | 26.32 | - | T31939 |
7.5 | 39.47 | - | T31940 |
10 | 52.63 | T20965 | T31941 |
15 | 78.95 | T20966 | T31942 |
25 | 131.58 | T20967 | T31943 |
37.5 | 197.37 | T20968 | T31944 |
50 | 263.16 | T20969 | T31945 |
75 | 394.74 | T20970 | T31946 |
100 | 526.32 | T20971 | T31947 |
167 | 878.95 | T20972 | T31948 |
200 | 1052.63 | T20973 | T31949 |
250 | 1315.79 | T20974 | T31950 |
330 | 1736.84 | T20975 | T31951 |
25. 400V Primary - 120 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 25 | - | T31952 |
5 | 41.67 | - | T31953 |
7.5 | 62.5 | - | T31954 |
10 | 83.33 | T20979 | T31955 |
15 | 125 | T20980 | T31956 |
25 | 208.33 | T20981 | T31957 |
37.5 | 312.5 | T20982 | T31958 |
50 | 416.67 | T20983 | T31959 |
75 | 625 | T20984 | T31960 |
100 | 833.33 | T20985 | T31961 |
167 | 1391.67 | T20986 | T31962 |
200 | 1666.67 | T20987 | T31963 |
250 | 2083.33 | T20988 | T31964 |
330 | 2750 | T20989 | T31965 |
26. 400V Primary - 115 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 26.09 | - | T31966 |
5 | 43.48 | - | T31967 |
7.5 | 65.22 | - | T31968 |
10 | 86.96 | T20993 | T31969 |
15 | 130.43 | T20994 | T31970 |
25 | 217.39 | T20995 | T31971 |
37.5 | 326.09 | T20996 | T31972 |
50 | 434.78 | T20997 | T31973 |
75 | 652.17 | T20998 | T31974 |
100 | 869.57 | T20999 | T31975 |
167 | 1452.17 | T21000 | T31976 |
200 | 1739.13 | T21001 | T31977 |
250 | 2173.91 | T21002 | T31978 |
330 | 2869.57 | T21003 | T31979 |
27. 400V Primary - 110 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 27.27 | - | T31980 |
5 | 45.45 | - | T31981 |
7.5 | 68.18 | - | T31982 |
10 | 90.91 | T21007 | T31983 |
15 | 136.36 | T21008 | T31984 |
25 | 227.27 | T21009 | T31985 |
37.5 | 340.91 | T21010 | T31986 |
50 | 454.55 | T21011 | T31987 |
75 | 681.82 | T21012 | T31988 |
100 | 909.09 | T21013 | T31989 |
167 | 1518.18 | T21014 | T31990 |
200 | 1818.18 | T21015 | T31991 |
250 | 2272.73 | T21016 | T31992 |
330 | 3000 | T21017 | T31993 |
28. 400V Primary - 100 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 30 | - | T31994 |
5 | 50 | - | T31995 |
7.5 | 75 | - | T31996 |
10 | 100 | T21021 | T31997 |
15 | 150 | T21022 | T31998 |
25 | 250 | T21023 | T31999 |
37.5 | 375 | T21024 | T32000 |
50 | 500 | T21025 | T32001 |
75 | 750 | T21026 | T32002 |
100 | 1000 | T21027 | T32003 |
167 | 1670 | T21028 | T32004 |
200 | 2000 | T21029 | T32005 |
250 | 2500 | T21030 | T32006 |
330 | 3300 | T21031 | T32007 |