E. 240/480 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. 240/480V Primary - 600 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5 | - | T28872 |
5 | 8.33 | - | T28873 |
7.5 | 12.5 | - | T28874 |
10 | 16.67 | T17899 | T28875 |
15 | 25 | T17900 | T28876 |
25 | 41.67 | T17901 | T28877 |
37.5 | 62.5 | T17902 | T28878 |
50 | 83.33 | T17903 | T28879 |
75 | 125 | T17904 | T28880 |
100 | 166.67 | T17905 | T28881 |
167 | 278.33 | T17906 | T28882 |
200 | 333.33 | T17907 | T28883 |
250 | 416.67 | T17908 | T28884 |
330 | 550 | T17909 | T28885 |
2. 240/480V Primary - 575 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5.22 | - | T28886 |
5 | 8.70 | - | T28887 |
7.5 | 13.04 | - | T28888 |
10 | 17.39 | T17913 | T28889 |
15 | 26.09 | T17914 | T28890 |
25 | 43.48 | T17915 | T28891 |
37.5 | 65.22 | T17916 | T28892 |
50 | 86.96 | T17917 | T28893 |
75 | 130.43 | T17918 | T28894 |
100 | 173.91 | T17919 | T28895 |
167 | 290.43 | T17920 | T28896 |
200 | 347.83 | T17921 | T28897 |
250 | 434.78 | T17922 | T28898 |
330 | 573.91 | T17923 | T28899 |
3. 240/480V Primary - 550 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 5.45 | - | T28900 |
5 | 9.09 | - | T28901 |
7.5 | 13.64 | - | T28902 |
10 | 18.18 | T17927 | T28903 |
15 | 27.27 | T17928 | T28904 |
25 | 45.45 | T17929 | T28905 |
37.5 | 68.18 | T17930 | T28906 |
50 | 90.91 | T17931 | T28907 |
75 | 136.36 | T17932 | T28908 |
100 | 181.82 | T17933 | T28909 |
167 | 303.64 | T17934 | T28910 |
200 | 363.64 | T17935 | T28911 |
250 | 454.55 | T17936 | T28912 |
330 | 600 | T17937 | T28913 |
4. 240/480V Primary - 480 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.25 | - | T28914 |
5 | 10.42 | - | T28915 |
7.5 | 15.63 | - | T28916 |
10 | 20.83 | T17941 | T28917 |
15 | 31.25 | T17942 | T28918 |
25 | 52.08 | T17943 | T28919 |
37.5 | 78.13 | T17944 | T28920 |
50 | 104.17 | T17945 | T28921 |
75 | 156.25 | T17946 | T28922 |
100 | 208.33 | T17947 | T28923 |
167 | 347.92 | T17948 | T28924 |
200 | 416.67 | T17949 | T28925 |
250 | 520.83 | T17950 | T28926 |
330 | 687.50 | T17951 | T28927 |
5. 240/480V Primary - 240/480 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 12.5/6.25 | - | T28928 |
5 | 20.83/10.42 | - | T28929 |
7.5 | 31.25/15.63 | - | T28930 |
10 | 41.67/20.83 | T17955 | T28931 |
15 | 62.5/31.25 | T17956 | T28932 |
25 | 104.17/52.08 | T17957 | T28933 |
37.5 | 156.25/78.13 | T17958 | T28934 |
50 | 208.33/104.17 | T17959 | T28935 |
75 | 312.5/156.25 | T17960 | T28936 |
100 | 416.67/208.33 | T17961 | T28937 |
167 | 695.83/347.92 | T17962 | T28938 |
200 | 833.33/416.67 | T17963 | T28939 |
250 | 1041.67/520.83 | T17964 | T28940 |
330 | 1375/687.5 | T17965 | T28941 |
6. 240/480V Primary - 460 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.52 | - | T28942 |
5 | 10.87 | - | T28943 |
7.5 | 16.30 | - | T28944 |
10 | 21.74 | T17969 | T28945 |
15 | 32.61 | T17970 | T28946 |
25 | 54.35 | T17971 | T28947 |
37.5 | 81.52 | T17972 | T28948 |
50 | 108.70 | T17973 | T28949 |
75 | 163.04 | T17974 | T28950 |
100 | 217.39 | T17975 | T28951 |
167 | 363.04 | T17976 | T28952 |
200 | 434.78 | T17977 | T28953 |
250 | 543.48 | T17978 | T28954 |
330 | 717.39 | T17979 | T28955 |
7. 240/480V Primary - 230/460 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.04/6.52 | - | T28956 |
5 | 21.74/10.87 | - | T28957 |
7.5 | 32.61/16.3 | - | T28958 |
10 | 43.48/21.74 | T17983 | T28959 |
15 | 65.22/32.61 | T17984 | T28960 |
25 | 108.7/54.35 | T17985 | T28961 |
37.5 | 163.04/81.52 | T17986 | T28962 |
50 | 217.39/108.7 | T17987 | T28963 |
75 | 326.09/163.04 | T17988 | T28964 |
100 | 434.78/217.39 | T17989 | T28965 |
167 | 726.09/363.04 | T17990 | T28966 |
200 | 869.57/434.78 | T17991 | T28967 |
250 | 1086.96/543.48 | T17992 | T28968 |
330 | 1434.78/717.39 | T17993 | T28969 |
8. 240/480V Primary - 440 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 6.82 | - | T28970 |
5 | 11.36 | - | T28971 |
7.5 | 17.05 | - | T28972 |
10 | 22.73 | T17997 | T28973 |
15 | 34.09 | T17998 | T28974 |
25 | 56.82 | T17999 | T28975 |
37.5 | 85.23 | T18000 | T28976 |
50 | 113.64 | T18001 | T28977 |
75 | 170.45 | T18002 | T28978 |
100 | 227.27 | T18003 | T28979 |
167 | 379.55 | T18004 | T28980 |
200 | 454.55 | T18005 | T28981 |
250 | 568.18 | T18006 | T28982 |
330 | 750 | T18007 | T28983 |
9. 240/480V Primary - 220/440 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.64/6.82 | - | T28984 |
5 | 22.73/11.36 | - | T28985 |
7.5 | 34.09/17.05 | - | T28986 |
10 | 45.45/22.73 | T18011 | T28987 |
15 | 68.18/34.09 | T18012 | T28988 |
25 | 113.64/56.82 | T18013 | T28989 |
37.5 | 170.45/85.23 | T18014 | T28990 |
50 | 227.27/113.64 | T18015 | T28991 |
75 | 340.91/170.45 | T18016 | T28992 |
100 | 454.55/227.27 | T18017 | T28993 |
167 | 759.09/379.55 | T18018 | T28994 |
200 | 909.09/454.55 | T18019 | T28995 |
250 | 1136.36/568.18 | T18020 | T28996 |
330 | 1500/750 | T18021 | T28997 |
10. 240/480V Primary - 416 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.21 | - | T28998 |
5 | 12.02 | - | T28999 |
7.5 | 18.03 | - | T29000 |
10 | 24.04 | T18025 | T29001 |
15 | 36.06 | T18026 | T29002 |
25 | 60.10 | T18027 | T29003 |
37.5 | 90.14 | T18028 | T29004 |
50 | 120.19 | T18029 | T29005 |
75 | 180.29 | T18030 | T29006 |
100 | 240.38 | T18031 | T29007 |
167 | 401.44 | T18032 | T29008 |
200 | 480.77 | T18033 | T29009 |
250 | 600.96 | T18034 | T29010 |
330 | 793.27 | T18035 | T29011 |
11. 240/480V Primary - 208/416 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 14.42/7.21 | - | T29012 |
5 | 24.04/12.02 | - | T29013 |
7.5 | 36.06/18.03 | - | T29014 |
10 | 48.08/24.04 | T18039 | T29015 |
15 | 72.12/36.06 | T18040 | T29016 |
25 | 120.19/60.1 | T18041 | T29017 |
37.5 | 180.29/90.14 | T18042 | T29018 |
50 | 240.38/120.19 | T18043 | T29019 |
75 | 360.58/180.29 | T18044 | T29020 |
100 | 480.77/240.38 | T18045 | T29021 |
167 | 802.88/401.44 | T18046 | T29022 |
200 | 961.54/480.77 | T18047 | T29023 |
250 | 1201.92/600.96 | T18048 | T29024 |
330 | 1586.54/793.27 | T18049 | T29025 |
12. 240/480V Primary - 400 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.5 | - | T29026 |
5 | 12.5 | - | T29027 |
7.5 | 18.75 | - | T29028 |
10 | 25 | T18053 | T29029 |
15 | 37.5 | T18054 | T29030 |
25 | 62.5 | T18055 | T29031 |
37.5 | 93.75 | T18056 | T29032 |
50 | 125 | T18057 | T29033 |
75 | 187.5 | T18058 | T29034 |
100 | 250 | T18059 | T29035 |
167 | 417.5 | T18060 | T29036 |
200 | 500 | T18061 | T29037 |
250 | 625 | T18062 | T29038 |
330 | 825 | T18063 | T29039 |
13. 240/480V Primary - 380 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 7.89 | - | T29040 |
5 | 13.16 | - | T29041 |
7.5 | 19.74 | - | T29042 |
10 | 26.32 | T18067 | T29043 |
15 | 39.47 | T18068 | T29044 |
25 | 65.79 | T18069 | T29045 |
37.5 | 98.68 | T18070 | T29046 |
50 | 131.58 | T18071 | T29047 |
75 | 197.37 | T18072 | T29048 |
100 | 263.16 | T18073 | T29049 |
167 | 439.47 | T18074 | T29050 |
200 | 526.32 | T18075 | T29051 |
250 | 657.89 | T18076 | T29052 |
330 | 868.42 | T18077 | T29053 |
14. 240/480V Primary - 347 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 8.65 | - | T29054 |
5 | 14.41 | - | T29055 |
7.5 | 21.61 | - | T29056 |
10 | 28.82 | T18081 | T29057 |
15 | 43.23 | T18082 | T29058 |
25 | 72.05 | T18083 | T29059 |
37.5 | 108.07 | T18084 | T29060 |
50 | 144.09 | T18085 | T29061 |
75 | 216.14 | T18086 | T29062 |
100 | 288.18 | T18087 | T29063 |
167 | 481.27 | T18088 | T29064 |
200 | 576.37 | T18089 | T29065 |
250 | 720.46 | T18090 | T29066 |
330 | 951.01 | T18091 | T29067 |
15. 240/480V Primary - 277 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 10.83 | - | T29068 |
5 | 18.05 | - | T29069 |
7.5 | 27.08 | - | T29070 |
10 | 36.10 | T18095 | T29071 |
15 | 54.15 | T18096 | T29072 |
25 | 90.25 | T18097 | T29073 |
37.5 | 135.38 | T18098 | T29074 |
50 | 180.51 | T18099 | T29075 |
75 | 270.76 | T18100 | T29076 |
100 | 361.01 | T18101 | T29077 |
167 | 602.89 | T18102 | T29078 |
200 | 722.02 | T18103 | T29079 |
250 | 902.53 | T18104 | T29080 |
330 | 1191.34 | T18105 | T29081 |
16. 240/480V Primary - 240 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 12.5 | - | T29082 |
5 | 20.83 | - | T29083 |
7.5 | 31.25 | - | T29084 |
10 | 41.67 | T18109 | T29085 |
15 | 62.5 | T18110 | T29086 |
25 | 104.17 | T18111 | T29087 |
37.5 | 156.25 | T18112 | T29088 |
50 | 208.33 | T18113 | T29089 |
75 | 312.5 | T18114 | T29090 |
100 | 416.67 | T18115 | T29091 |
167 | 695.83 | T18116 | T29092 |
200 | 833.33 | T18117 | T29093 |
250 | 1041.67 | T18118 | T29094 |
330 | 1375 | T18119 | T29095 |
17. 240/480V Primary - 120/240 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 25/12.5 | - | T29096 |
5 | 41.67/20.83 | - | T29097 |
7.5 | 62.5/31.25 | - | T29098 |
10 | 83.33/41.67 | T18123 | T29099 |
15 | 125/62.5 | T18124 | T29100 |
25 | 208.33/104.17 | T18125 | T29101 |
37.5 | 312.5/156.25 | T18126 | T29102 |
50 | 416.67/208.33 | T18127 | T29103 |
75 | 625/312.5 | T18128 | T29104 |
100 | 833.33/416.67 | T18129 | T29105 |
167 | 1391.67/695.83 | T18130 | T29106 |
200 | 1666.67/833.33 | T18131 | T29107 |
250 | 2083.33/1041.67 | T18132 | T29108 |
330 | 2750/1375 | T18133 | T29109 |
18. 240/480V Primary - 230 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.04 | - | T29110 |
5 | 21.74 | - | T29111 |
7.5 | 32.61 | - | T29112 |
10 | 43.48 | T18137 | T29113 |
15 | 65.22 | T18138 | T29114 |
25 | 108.70 | T18139 | T29115 |
37.5 | 163.04 | T18140 | T29116 |
50 | 217.39 | T18141 | T29117 |
75 | 326.09 | T18142 | T29118 |
100 | 434.78 | T18143 | T29119 |
167 | 726.09 | T18144 | T29120 |
200 | 869.57 | T18145 | T29121 |
250 | 1086.96 | T18146 | T29122 |
330 | 1434.78 | T18147 | T29123 |
19. 240/480V Primary - 115/230 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 26.09/13.04 | - | T29124 |
5 | 43.48/21.74 | - | T29125 |
7.5 | 65.22/32.61 | - | T29126 |
10 | 86.96/43.48 | T18151 | T29127 |
15 | 130.43/65.22 | T18152 | T29128 |
25 | 217.39/108.7 | T18153 | T29129 |
37.5 | 326.09/163.04 | T18154 | T29130 |
50 | 434.78/217.39 | T18155 | T29131 |
75 | 652.17/326.09 | T18156 | T29132 |
100 | 869.57/434.78 | T18157 | T29133 |
167 | 1452.17/726.09 | T18158 | T29134 |
200 | 1739.13/869.57 | T18159 | T29135 |
250 | 2173.91/1086.96 | T18160 | T29136 |
330 | 2869.57/1434.78 | T18161 | T29137 |
20. 240/480V Primary - 220 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 13.64 | - | T29138 |
5 | 22.73 | - | T29139 |
7.5 | 34.09 | - | T29140 |
10 | 45.45 | T18165 | T29141 |
15 | 68.18 | T18166 | T29142 |
25 | 113.64 | T18167 | T29143 |
37.5 | 170.45 | T18168 | T29144 |
50 | 227.27 | T18169 | T29145 |
75 | 340.91 | T18170 | T29146 |
100 | 454.55 | T18171 | T29147 |
167 | 759.09 | T18172 | T29148 |
200 | 909.09 | T18173 | T29149 |
250 | 1136.36 | T18174 | T29150 |
330 | 1500 | T18175 | T29151 |
21. 240/480V Primary - 110/220 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 27.27/13.64 | - | T29152 |
5 | 45.45/22.73 | - | T29153 |
7.5 | 68.18/34.09 | - | T29154 |
10 | 90.91/45.45 | T18179 | T29155 |
15 | 136.36/68.18 | T18180 | T29156 |
25 | 227.27/113.64 | T18181 | T29157 |
37.5 | 340.91/170.45 | T18182 | T29158 |
50 | 454.55/227.27 | T18183 | T29159 |
75 | 681.82/340.91 | T18184 | T29160 |
100 | 909.09/454.55 | T18185 | T29161 |
167 | 1518.18/759.09 | T18186 | T29162 |
200 | 1818.18/909.09 | T18187 | T29163 |
250 | 2272.73/1136.36 | T18188 | T29164 |
330 | 3000/1500 | T18189 | T29165 |
22. 240/480V Primary - 208 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 14.42 | - | T29166 |
5 | 24.04 | - | T29167 |
7.5 | 36.06 | - | T29168 |
10 | 48.08 | T18193 | T29169 |
15 | 72.12 | T18194 | T29170 |
25 | 120.19 | T18195 | T29171 |
37.5 | 180.29 | T18196 | T29172 |
50 | 240.38 | T18197 | T29173 |
75 | 360.58 | T18198 | T29174 |
100 | 480.77 | T18199 | T29175 |
167 | 802.88 | T18200 | T29176 |
200 | 961.54 | T18201 | T29177 |
250 | 1201.92 | T18202 | T29178 |
330 | 1586.54 | T18203 | T29179 |
23. 240/480V Primary - 200 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 15 | - | T29180 |
5 | 25 | - | T29181 |
7.5 | 37.5 | - | T29182 |
10 | 50 | T18207 | T29183 |
15 | 75 | T18208 | T29184 |
25 | 125 | T18209 | T29185 |
37.5 | 187.5 | T18210 | T29186 |
50 | 250 | T18211 | T29187 |
75 | 375 | T18212 | T29188 |
100 | 500 | T18213 | T29189 |
167 | 835 | T18214 | T29190 |
200 | 1000 | T18215 | T29191 |
250 | 1250 | T18216 | T29192 |
330 | 1650 | T18217 | T29193 |
24. 240/480V Primary - 190 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 15.79 | - | T29194 |
5 | 26.32 | - | T29195 |
7.5 | 39.47 | - | T29196 |
10 | 52.63 | T18221 | T29197 |
15 | 78.95 | T18222 | T29198 |
25 | 131.58 | T18223 | T29199 |
37.5 | 197.37 | T18224 | T29200 |
50 | 263.16 | T18225 | T29201 |
75 | 394.74 | T18226 | T29202 |
100 | 526.32 | T18227 | T29203 |
167 | 878.95 | T18228 | T29204 |
200 | 1052.63 | T18229 | T29205 |
250 | 1315.79 | T18230 | T29206 |
330 | 1736.84 | T18231 | T29207 |
25. 240/480V Primary - 120 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 25 | - | T29208 |
5 | 41.67 | - | T29209 |
7.5 | 62.5 | - | T29210 |
10 | 83.33 | T18235 | T29211 |
15 | 125 | T18236 | T29212 |
25 | 208.33 | T18237 | T29213 |
37.5 | 312.5 | T18238 | T29214 |
50 | 416.67 | T18239 | T29215 |
75 | 625 | T18240 | T29216 |
100 | 833.33 | T18241 | T29217 |
167 | 1391.67 | T18242 | T29218 |
200 | 1666.67 | T18243 | T29219 |
250 | 2083.33 | T18244 | T29220 |
330 | 2750 | T18245 | T29221 |
26. 240/480V Primary - 115 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 26.09 | - | T29222 |
5 | 43.48 | - | T29223 |
7.5 | 65.22 | - | T29224 |
10 | 86.96 | T18249 | T29225 |
15 | 130.43 | T18250 | T29226 |
25 | 217.39 | T18251 | T29227 |
37.5 | 326.09 | T18252 | T29228 |
50 | 434.78 | T18253 | T29229 |
75 | 652.17 | T18254 | T29230 |
100 | 869.57 | T18255 | T29231 |
167 | 1452.17 | T18256 | T29232 |
200 | 1739.13 | T18257 | T29233 |
250 | 2173.91 | T18258 | T29234 |
330 | 2869.57 | T18259 | T29235 |
27. 240/480V Primary - 110 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 27.27 | - | T29236 |
5 | 45.45 | - | T29237 |
7.5 | 68.18 | - | T29238 |
10 | 90.91 | T18263 | T29239 |
15 | 136.36 | T18264 | T29240 |
25 | 227.27 | T18265 | T29241 |
37.5 | 340.91 | T18266 | T29242 |
50 | 454.55 | T18267 | T29243 |
75 | 681.82 | T18268 | T29244 |
100 | 909.09 | T18269 | T29245 |
167 | 1518.18 | T18270 | T29246 |
200 | 1818.18 | T18271 | T29247 |
250 | 2272.73 | T18272 | T29248 |
330 | 3000 | T18273 | T29249 |
28. 240/480V Primary - 100 Secondary
kVA | Output Amps | Aluminum | Copper |
3 | 30 | - | T29250 |
5 | 50 | - | T29251 |
7.5 | 75 | - | T29252 |
10 | 100 | T18277 | T29253 |
15 | 150 | T18278 | T29254 |
25 | 250 | T18279 | T29255 |
37.5 | 375 | T18280 | T29256 |
50 | 500 | T18281 | T29257 |
75 | 750 | T18282 | T29258 |
100 | 1000 | T18283 | T29259 |
167 | 1670 | T18284 | T29260 |
200 | 2000 | T18285 | T29261 |
250 | 2500 | T18286 | T29262 |
330 | 3300 | T18287 | T29263 |