| Brand | Advance |
|---|---|
| Primary Voltage Rating (AC) | 240/277 V |
| Series | HX |
| Type | Autotransformer |
| Primary Current Rating | 240 A |
| Maximum Operating Frequency | 60 Hz |
| Secondary Current Rating | 240 A |
| Turns Ratio | 1:20 |
Check the listing for details. Advance Autotransformer Ballast 71A7991. Condition: Used. Listed at 29.99 USD. used but still works
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