C. 550 Volts Primary, Three Phase Autotransformers
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TEMCo Three 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
• 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
Copper Wound Autotransformers, 550V Primary
| Select Secondary Voltage Below | |||||||||
| kVA | 600V | 575V | 480V | 460V | 440V | 416V | 400V | 380V | |
| 15 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 30 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 45 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 75 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 112.5 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 225 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 300 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 450 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 500 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
| 750 | Contact | Contact | Contact | Contact | Contact | Contact | Contact | Contact | |
Output Amps
| kVA | Output Amps at: | ||||||||
| 600V | 575V | 480V | 460V | 440V | 416V | 400V | 380V | ||
| 15 | 14.4 | 15.1 | 18 | 18.8 | 19.7 | 20.8 | 21.7 | 22.8 | |
| 30 | 28.9 | 30.1 | 36.1 | 37.7 | 39.4 | 41.6 | 43.3 | 45.6 | |
| 45 | 43.3 | 45.2 | 54.1 | 56.5 | 59.1 | 62.5 | 64 | 68.4 | |
| 75 | 72.2 | 75.3 | 90.2 | 94.1 | 98.4 | 104.1 | 108.3 | 113 | |
| 112.5 | 108.3 | 112 | 135.3 | 141.2 | 147.6 | 156.1 | 162.4 | 170.9 | |
| 225 | 216.5 | 225.9 | 270.6 | 282.4 | 295.2 | 312.3 | 324.8 | 341.9 | |
| 300 | 288.7 | 301.2 | 360.9 | 376.5 | 393.7 | 416.4 | 433 | 455.8 | |
| 450 | 433 | 451.9 | 541.3 | 564.8 | 590.5 | 624.6 | 649.5 | 683.7 | |
| 500 | 481.1 | 502.1 | 601.4 | 627.6 | 656.1 | 693 | 721.7 | 759.7 | |
| 750 | 721.7 | 753.1 | 902.1 | 941.4 | 984.2 | 1040.9 | 1082.6 | 1139 | |