C. 550 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
550V Primary, Copper Wound, 1 Phase Autotransformers
| kVA | Select Secondary Voltage Below | ||||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | 347V | 277V | |
| 3 | T50160 | T50170 | T50180 | T50190 | T50200 | T50210 | T50220 | T50230 | T50240 | T50250 | T50260 |
| 5 | T50161 | T50171 | T50181 | T50191 | T50201 | T50211 | T50221 | T50231 | T50241 | T50251 | T50261 |
| 7 | T50162 | T50172 | T50182 | T50192 | T50202 | T50212 | T50222 | T50232 | T50242 | T50252 | T50262 |
| 10 | T50163 | T50173 | T50183 | T50193 | T50203 | T50213 | T50223 | T50233 | T50243 | T50253 | T50263 |
| 15 | T50164 | T50174 | T50184 | T50194 | T50204 | T50214 | T50224 | T50234 | T50244 | T50254 | T50264 |
| 25 | T50165 | T50175 | T50185 | T50195 | T50205 | T50215 | T50225 | T50235 | T50245 | T50255 | T50265 |
| 37 | T50166 | T50176 | T50186 | T50196 | T50206 | T50216 | T50226 | T50236 | T50246 | T50256 | T50266 |
| 50 | T50167 | T50177 | T50187 | T50197 | T50207 | T50217 | T50227 | T50237 | T50247 | T50257 | T50267 |
| 75 | T50168 | T50178 | T50188 | T50198 | T50208 | T50218 | T50228 | T50238 | T50248 | T50258 | T50268 |
| 100 | T50169 | T50179 | T50189 | T50199 | T50209 | T50219 | T50229 | T50239 | T50249 | T50259 | T50269 |
Output Amps
| kVA | Output Amps at: | ||||||||||||||||||||
| 600V | 575V | 550V | 480V | 460V | 440V | 416V | 400V | 380V | 347V | 277V | |||||||||||
| 3 | 5 | 5.2 | 5.5 | 6.3 | 6.52 | 6.8 | 7.2 | 7.5 | 7.9 | 8.7 | 10.8 | ||||||||||
| 5 | 8.3 | 8.7 | 9.1 | 10.4 | 10.9 | 11.4 | 12 | 12.5 | 13.2 | 14.4 | 18.1 | ||||||||||
| 7 | 11.7 | 12.2 | 12.7 | 14.6 | 15.2 | 15.9 | 16.8 | 17.5 | 18.4 | 20.2 | 25.3 | ||||||||||
| 10 | 16.7 | 17.4 | 18.2 | 20.8 | 21.74 | 22.7 | 24 | 25 | 26.3 | 28.8 | 36.1 | ||||||||||
| 15 | 25 | 26.1 | 27.3 | 31.3 | 32.61 | 34.1 | 36.1 | 37.5 | 39.5 | 43.2 | 54.2 | ||||||||||
| 25 | 41.7 | 43.5 | 45.5 | 52.1 | 54.35 | 56.8 | 60.1 | 62.5 | 65.8 | 72.1 | 90.3 | ||||||||||
| 37 | 61.7 | 64.4 | 67.3 | 77.1 | 80.43 | 84.1 | 88.9 | 92.5 | 97.4 | 106.6 | 133.6 | ||||||||||
| 50 | 83.3 | 86.9 | 90.9 | 104.2 | 108.7 | 113.64 | 120.2 | 125 | 131.6 | 144.1 | 180.5 | ||||||||||
| 75 | 125 | 130.4 | 136.4 | 156.3 | 163 | 170.45 | 180.3 | 187.5 | 197.4 | 216.1 | 270.76 | ||||||||||
| 100 | 166.7 | 173.9 | 181.8 | 208.3 | 217.4 | 227.3 | 240.4 | 250 | 263.2 | 288.2 | 361.01 | ||||||||||