120 Volt Single Phase Autotransformers

R. 120 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

120V Primary, Copper Wound, 1 Phase Autotransformers

kVA Select Secondary Voltage Below
240V 230V 220V 208V 200V 190V 120V 115V 110V 100V
3 T52320 T52330 T52340 T52350 T52360 T52370 T52380 T52390 T52400 T52410
5 T52321 T52331 T52341 T52351 T52361 T52371 T52381 T52391 T52401 T52411
7 T52322 T52332 T52342 T52352 T52362 T52372 T52382 T52392 T52402 T52412
10 T52323 T52333 T52343 T52353 T52363 T52373 T52383 T52393 T52403 T52413
15 T52324 T52334 T52344 T52354 T52364 T52374 T52384 T52394 T52404 T52414
25 T52325 T52335 T52345 T52355 T52365 T52375 T52385 T52395 T52405 T52415
37 T52326 T52336 T52346 T52356 T52366 T52376 T52386 T52396 T52406 T52416
50 T52327 T52337 T52347 T52357 T52367 T52377 T52387 T52397 T52407 T52417
75 T52328 T52338 T52348 T52358 T52368 T52378 T52388 T52398 T52408 T52418
100 T52329 T52339 T52349 T52359 T52369 T52379 T52389 T52399 T52409 T52419

Output Amps

kVA Output Amps at:
240V 230V 220V 208V 200V 190V 120V 115V 110V 100V
3 12.5 13 13.6 14.4 15 15.8 25 26.1 27.3 30
5 20.8 21.7 22.7 24 25 26.3 41.7 43.5 45.5 50
7 29.2 30.4 31.8 33.7 35 36.8 58.3 60.9 63.6 70
10 41.7 43.5 45.5 48.1 50 52.6 83.3 86.96 90.9 100
15 62.5 65.2 68.2 72.1 75 79 125 130.4 136.4 150
25 104.2 108.7 113.6 120.2 125 131.6 208.3 217.4 227.3 250
37 154.2 160.9 168.2 177.9 185 194.7 308.3 321.7 336.4 370
50 208.3 217.4 227.3 240.4 250 263.2 416.7 434.8 454.6 500
75 312.5 326.1 340.9 360.6 375 394.7 625 652.2 681.8 750
100 416.7 434.8 454.6 480.8 500 526.3 833.3 869.6 909.1 1000